WO1998033142A1 - Transmission module for a transponder device, transponder device and method for operating said device - Google Patents

Transmission module for a transponder device, transponder device and method for operating said device Download PDF

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Publication number
WO1998033142A1
WO1998033142A1 PCT/DE1998/000237 DE9800237W WO9833142A1 WO 1998033142 A1 WO1998033142 A1 WO 1998033142A1 DE 9800237 W DE9800237 W DE 9800237W WO 9833142 A1 WO9833142 A1 WO 9833142A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
transponder
coupling
chip
transmission module
Prior art date
Application number
PCT/DE1998/000237
Other languages
German (de)
French (fr)
Inventor
Manfred Rietzler
Robert Wilm
Original Assignee
Amatech Advanced Micromechanic & Automation Technology Gmbh & Co. Kg
Pav Card Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amatech Advanced Micromechanic & Automation Technology Gmbh & Co. Kg, Pav Card Gmbh filed Critical Amatech Advanced Micromechanic & Automation Technology Gmbh & Co. Kg
Priority to CA002279176A priority Critical patent/CA2279176A1/en
Priority to EP98909286A priority patent/EP0956537A1/en
Priority to JP10531488A priority patent/JP2000510271A/en
Priority to AU63905/98A priority patent/AU6390598A/en
Publication of WO1998033142A1 publication Critical patent/WO1998033142A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
    • G06K19/07756—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna the connection being non-galvanic, e.g. capacitive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs

Definitions

  • the present invention relates to a transmission module for contactless data transmission between a chip and a reading device according to claims 1 or 2 and a transponder device with a transponder unit and a transmission module according to claims 1 1, 12 or 13 and a method for operating a transponder device with a Transponder unit and a transmission module according to claims 16 or 17
  • Transponder units which in their simplest form consist of a chip and a transponder coil contacted with the connection surfaces of the chip, are being used to an increasing extent in completely different fields, but they serve the same purpose, a contact or wireless communication between one more or less far away from the transponder unit and the chip to ensure that data can be tapped to recognize data stored on the chip.
  • Such transponder units are used, for example, in so-called contactless chip cards, in coded labels or for slaughter animals. tion, used here as a so-called injection transponder
  • transponder units Due to the different areas of application of transponder units, there are sometimes extremely different transmission distances between the respective transponder unit and the associated reading device, which accordingly require different operating voltages for the transponder units or the chips comprised by them.
  • the layout has so far been necessary in each individual case to match the transponder unit to the reading device, which as a rule makes an impedance matching between the transponder unit and the reading device necessary. From the foregoing, it becomes clear that a large number of differently designed transponder units are necessary simply because of the two design parameters operating voltage and impedance, in order to ensure reliable Operation of the respective transponder unit as a function of the transmission distance and the type of the associated reading device must be ensured. These requirements are there against a fundamentally desired standardization in the design of transponder units, which would enable a significantly more cost-effective production of transponder units
  • the object of the present invention is therefore to enable the formation of a standardized transponder unit, regardless of the transmission distance available in the individual case or the respective type of reading device
  • a transmission module for contactless data transmission between a chip and a reading device which has a coil arrangement with a coupling element and at least one antenna coil which are electrically connected to one another, the coupling element for producing an inductive coupling with a transponder coil electrically connected to the chip and the Antenna coil for establishing a contactless connection with the
  • the reading device serves as a coupling coil
  • the coupling element and the antenna coil are designed differently with regard to at least one of their coil parameters influencing the coil impedance
  • a transmission module designed in this way which can be combined with the transponder unit by means of inductive coupling, thus enables impedance matching between the reading device and the transponder unit.
  • the coupling element is designed as a coupling coil
  • len parameters are available, for example, the wire cross section of the coil, the length of the coil wire assigned to the respective coil, or the material used to produce the coil wire
  • a further possibility of adapting a transponder unit to the particular circumstances of the individual case with regard to different transmission distances is to provide a transmission module for contactless data transmission between a chip and a reading device, which has a coil arrangement with a coupling element and at least one antenna coil, the Coupling element for producing an inductive coupling with a transponder coil electrically connected to the chip and the antenna coil for producing a non-contact Connection to the reading device is used, wherein the contact element designed as a coupling coil is designed such that the coupling coil is formed as a primary coil with the associated transponder coil
  • the inductive coupling between the coupling coil and the transponder coil is therefore used to form a transformer from the coupling coil and the transponder coil, with which the operating voltage in the transponder unit can be increased.
  • a strengthening device of this type can be formed from a voltage source which increases or generates the voltage applied to the coupling coil, that is to say, for example, by a battery arranged in the transmission module and contacted with the coupling coil. This enables an active transmission module to be formed which is via has its own power supply
  • Another way to achieve a reinforcing effect is to provide the coupling coil with a core made of a permeable material, in particular ferrite, which has the magnetic field strength the coupling coil increases
  • the above-described amplification device thus also forms a solution that is independent of the solution, the coupling coil and the transponder coil to be used to form a transformer
  • the antenna coil also serves as a coupling coil
  • the coil arrangement is arranged on a carrier film.
  • carrier film is not restrictive here with regard to a material selection that is suitable for the carrier film understand, that is, contrary to a widespread understanding of the meaning of the term “carrier film” fall under this term, as it is used here, not only plastic materials, but also natural materials, such as cell fibers or paper with the term “carrier film” here can only be expressed that a substrate designed as a carrier film is essentially determined by its surface dimension and has a thickness that is rather negligible compared to the surface extension
  • the coil arrangement is to be used for coded labels or the like, it proves to be advantageous if the coil arrangement is formed on an adhesive substrate
  • the transponder device is provided according to claim 1 1 with a transponder unit and a transmission module, wherein the transponder unit has a chip with a transponder coil electrically connected to the chip and the transmission module has a coupling element with an antenna coil, the coupling element being used for inductive coupling to the transponder coil, and the antenna coil being electrically connected to the coupling element and for establishing a contactless connection serves with a reading device, in order to enable an adaptation between the transponder unit and the reading device, the coupling element designed as a coupling coil and the antenna coil are designed differently with respect to at least one of their coil parameters influencing the coil impedance.
  • a transponder device with a transponder unit and a transmission module having a chip with a transponder coil electrically connected to the chip and the transmission module having a coupling element with an antenna coil, the coupling element for producing an inductive coupling with serves the transponder coil, and the antenna coil is electrically connected to the coupling element and is used to establish a contactless connection with a reading device, the coupling element being designed as a coupling coil and having a comparatively smaller number of turns than the transponder coil, such that the coupling coil is a primary coil and the Transponder coil forms a secondary coil of a transformer
  • a further transponder device is provided with a transponder unit and a transmission module, the transponder unit being a chip with an electrically connected to the
  • Chip-connected transponder coil and the transmission module has a coupling element with an antenna coil, the coupling element being used to establish an inductive coupling with the transponder coil, and the antenna coil being electrically connected to the coupling element and serving to establish a contactless connection to a reading device, the coupling element being made of a permeable material rod, in particular a ferrite core, is formed, the end face of which serves as a coupling surface, and the antenna coil is arranged around the material rod
  • the chip is arranged with its rear side on the end face of the permeable material rod, and the chip coil arranged on the contact side of the chip opposite the rear side is essentially congruent with the end face of the material rod with its coil surface
  • the transmission module is used to adapt the impedance of the antenna coil to a reading device communicating with the transponder unit changed an impedance of the coupling coil adapted to the impedance of the transponder unit
  • Another method according to the invention for operating a transponder device with a transponder unit having a chip and a transponder coil and a transmission module having a coupling coil and an antenna coil electrically connected to the coupling coil consists in the coupling coil of the transmission module together with the transponder coil as the operating voltage in the transponder unit, increasing the transformer to use
  • FIG. 1 shows a schematic illustration of a data transmission arrangement with a transponder device and a reading device
  • FIG. 2 shows a detailed illustration of the transponder device shown schematically in FIG. 1, 3 shows a sectional illustration of a chip card constructed using layer technology and provided with a transponder device,
  • FIG. 4 is a top view of the transponder device arranged in the chip card shown in FIG. 3,
  • Fig. 5 shows another embodiment of a transponder device
  • the transponder device 11 comprises a transponder unit 13 and a transmission module 14.
  • the transponder unit 13 has a chip 15 and one on connection surfaces 16, 17 of the chip 15 electrically connected transponder coil 18
  • the transmission module 14 consists of a coupling element, which is designed here as a coupling coil 19, and an antenna coil 20 which is electrically connected to the coupling coil
  • the transmission module 14 basically serves to receive the electromagnetic transmission power emitted by a transmission coil 21 of the reading device 12 via the antenna coil 20 and to transmit it inductively by means of the coupling coil 19 to the transponder coil 18 of the transponder unit 13.
  • the coupling coil 19 essentially has the task to focus the electromagnetic field on the transponder coil 18 in order to achieve the most effective inductive coupling between the coupling coil 19 and the transponder coil 18
  • transmission module 14 Another function of the transmission module 14 is to increase the operating voltage of the chip 15 by means of a suitable interaction with the transponder coil 18, in order to enable an increased transmission distance ⁇ between the transponder device 11 and the reading device 12
  • transmission module 14 enables an adaptation of the
  • FIG. 2 shows, for a more detailed explanation of the above-described modes of operation of the transmission module 14, a detailed illustration of the transponder device 11 with the transponder unit 13 comprising the chip 15 and the transponder coil ⁇ and the transmission module 14 with the coupling coil 19 and the antenna coil 20
  • the coupling coil 19 and the antenna coil 20 are connected via electrical conductors 22, 23 on account of the different winding lengths of the coils in connection with the number of turns otherwise matching, the
  • the coupling coil 19 has a lower impedance than the antenna coil 20.
  • the embodiment of the transmission module 14 shown in FIG. 2 can accordingly be designed, for example, so that the coupling coil 19 is connected to the relative low impedance of the transponder unit 13 is adapted and the antenna coil 20 is adapted to the relatively high impedance of a reading device not shown here, so that it is possible by means of the transmission module 14 to connect a high-resistance reading device to a low-resistance transponder unit without the transponder unit being used for this purpose itself, that is, the transponder coil 18, had to be adapted directly in terms of impedance
  • transponder coil 18 as a primary coil or a secondary coil
  • Transformers 25 act, with the result that a comparatively increased voltage is induced in the transponder coil 18, as a result of which a correspondingly increased operating voltage is available for the chip 15
  • FIG 3 shows a transmission module 26 in one embodiment as a card inlay in a chip card 27 formed using layer technology
  • the other layers are made up of a chip inlay 28 with a chip 29 accommodated therein, a transponder coil inlay 30 with an embedded transponder coil 3 1, which is in contact with the chip 29, and two outer layers each arranged on the chip inlay 28 or the transmission module 26 Cover layers 32 and 33 formed
  • the chip inlay 28 and the transponder coil inlay 30 form a transponder device 49 in the present case
  • FIG. 4 shows a top view of the transmission module 26 with a coupling coil 34 and an antenna coil 35, which are connected to one another via conductors 36, 37 and are arranged on a common carrier layer 38, here designed as a thin-layer substrate, which in the present case consists of a Polyimide film can exist
  • Antenna coil 35 can be designed as wire coils and also as coils realized in some other way
  • FIG. 5 shows a transponder device 39 with a transponder unit 40, which is formed from a chip 41 and a transponder coil 43 arranged directly on the contact surface 42 provided with connection surfaces.
  • a transponder coil 43 arranged directly on the contact surface 42 provided with connection surfaces.
  • coil arrangements are also referred to in technical terms with the term “coil on chip” and can 1 g oe v can be produced in an etching or shearing process
  • the transponder device 39 has a transmission module 44 which consists of a short-circuited antenna arranged around a ferrite core 45.
  • the nominal coil 46 is different from the transmission modules 14 and 26 shown in FIGS. 2 and 4 takes place in the transmission module
  • the transponder device 39 enables a structure in which the rear side of the chip 41 can be positioned directly on an end face 48 of the ferrite core 45 in order to achieve the most effective inductive coupling between the ferrite core
  • the chip 41 is arranged on the end face 48 of the ferrite core 45 in such a way that the end face 48, from which the magnetic field is essentially emitted, and the transponder coil 43 are in an overlap position
  • the transponder device shown in FIG. 5 is particularly suitable for use as a so-called injection transponder, in which the transponder device 39 is hermetically sealed in an injection container, for example made of glass, which can be used, for example, injected subcutaneously as a transponder for slaughter cattle identification

Abstract

The invention relates to a transmission module (14) for contactless transmission of data between a chip (15) and a reading device (12) with a coil arrangement comprising a coupling element (19) and at least one antenna coil (20) that are electrically interconnected, wherein said coupling element is used to produce inductive coupling with a transponder coil (18) which is electrically connected to the chip, and the antenna coil is used to enable connection to the reading device. The coupling element embodied as a coupling coil (19) and the antenna coil (20) are configured differently with respect to the coil parameters affecting coil impedance.

Description

Übertragungsmodul für eine Transpondervorrichtung sowie Transpondervorrichtung und Verfahren zum Betrieb einer Transpondervorrichtung Transmission module for a transponder device and transponder device and method for operating a transponder device
Die vorliegende Erfindung betrifft ein Übertragungsmodul zur kontaktlosen Datenübertragung zwischen einem Chip und einer Leseeinrichtung gemäß den Ansprüchen 1 oder 2 sowie eine Transpondervorrichtung mit einer Transpondereinheit und einem Übertragungsmodul nach den Anspru- chen 1 1 , 12 oder 13 und ein Verfahren zum Betrieb einer Transpondervorrichtung mit einer Transpondereinheit und einem Übertragungsmodul nach den Ansprüchen 16 oder 17The present invention relates to a transmission module for contactless data transmission between a chip and a reading device according to claims 1 or 2 and a transponder device with a transponder unit and a transmission module according to claims 1 1, 12 or 13 and a method for operating a transponder device with a Transponder unit and a transmission module according to claims 16 or 17
Transpondereinheiten, die in ihrer einfachsten Ausfuhrung aus einem Chip und einer mit den Anschlußflachen des Chips kontaktierten Transponder- spule bestehen, werden in zunehmendem Maße auf ganzlich unterschiedlichen Gebieten eingesetzt, wobei sie jedoch einheitlich dem Zweck dienen, eine beruhrungs- oder drahtlose Kommunikation zwischen einer mehr oder weniger weit entfernt von der Transpondereinheit angeordneten Leseeinrichtung und dem Chip zu gewahrleisten, um einen Datenabgriff zur Erkennung von auf dem Chip gespeicherten Daten zu ermöglichen Derartige Transpondereinheiten werden beispielsweise in sogenannten kontaktlosen Chipkarten, in codierten Etiketten oder auch zur Schlachtviehken- nung, hier verwendet als sogenannte Injektionstransponder, eingesetztTransponder units, which in their simplest form consist of a chip and a transponder coil contacted with the connection surfaces of the chip, are being used to an increasing extent in completely different fields, but they serve the same purpose, a contact or wireless communication between one more or less far away from the transponder unit and the chip to ensure that data can be tapped to recognize data stored on the chip. Such transponder units are used, for example, in so-called contactless chip cards, in coded labels or for slaughter animals. tion, used here as a so-called injection transponder
Bedingt durch die unterschiedlichen Einsatzgebiete von Transpondereinheiten ergeben sich zum Teil extrem voneinander abweichende Ubertra- gungsdistanzen zwischen der jeweiligen Transpondereinheit und der zugeordneten Leseeinrichtung, die entsprechend unterschiedliche Betriebsspannungen der Transpondereinheiten bzw des davon umfaßten Chips erfordern Darüber hinaus ist es bislang notwendig, in jedem Einzelfall das Layout der Transpondereinheit auf die Leseeinrichtung abzustimmen, was in der Regel eine Impedanzanpassung zwischen der Trans- pondereinheit und der Leseeinrichtung notwendig macht Aus dem Vorstehenden wird deutlich, daß schon aufgrund lediglich der beiden Auslegungsparameter Betriebsspannung und Impedanz eine Vielzahl unterschiedlich ausgelegter Transpondereinheiten notwendig ist, um einen sicheren Betrieb der jeweiligen Transpondereinheit in Abhängigkeit von der Ubertragungsdistanz und der Art der zugeordneten Leseeinrichtung zu gewahrleisten Diese Anforderungen stehen daher einer grundsatzlich gewünschten Standardisierung in der Auslegung von Transpondereinheiten entgegen, die eine wesentlich kostengünstigere Herstellung von Transpondereinheiten ermöglichen wurdeDue to the different areas of application of transponder units, there are sometimes extremely different transmission distances between the respective transponder unit and the associated reading device, which accordingly require different operating voltages for the transponder units or the chips comprised by them. In addition, the layout has so far been necessary in each individual case to match the transponder unit to the reading device, which as a rule makes an impedance matching between the transponder unit and the reading device necessary. From the foregoing, it becomes clear that a large number of differently designed transponder units are necessary simply because of the two design parameters operating voltage and impedance, in order to ensure reliable Operation of the respective transponder unit as a function of the transmission distance and the type of the associated reading device must be ensured. These requirements are there against a fundamentally desired standardization in the design of transponder units, which would enable a significantly more cost-effective production of transponder units
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, unabhängig von der im Einzelfall vorliegenden Ubertragungsdistanz bzw der jeweiligen Art der Leseeinrichtung die Ausbildung einer standardisierten Transpondereinheit zu ermöglichenThe object of the present invention is therefore to enable the formation of a standardized transponder unit, regardless of the transmission distance available in the individual case or the respective type of reading device
Diese Aufgabe wird durch ein Übertragungsmodul mit den Merkmalen der Ansprüche 1 oder 2 gelostThis object is achieved by a transmission module with the features of claims 1 or 2
Erfindungsgemaß wird ein Übertragungsmodul zur kontaktlosen Datenübertragung zwischen einem Chip und einer Leseeinrichtung vorgeschlagen, das eine Spulenanordnung mit einem Koppelelement und mindestens einer Antennenspule aufweist, welche elektrisch miteinander verbunden sind, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit einer elektrisch mit dem Chip verbundenen Transponderspule und die Antennenspule zur Herstellung einer beruhrungslosen Verbindung mit derAccording to the invention, a transmission module for contactless data transmission between a chip and a reading device is proposed, which has a coil arrangement with a coupling element and at least one antenna coil which are electrically connected to one another, the coupling element for producing an inductive coupling with a transponder coil electrically connected to the chip and the Antenna coil for establishing a contactless connection with the
Leseeinrichtung dient Dabei sind das als Koppelspule ausgebildeteThe reading device serves as a coupling coil
Koppelelement und die Antennenspule hinsichtlich mindestens eines ihrer die Spulenimpedanz beeinflussenden Spulenparameter unterschiedlich ausgebildetThe coupling element and the antenna coil are designed differently with regard to at least one of their coil parameters influencing the coil impedance
Ein derart gestaltetes Übertragungsmodul, das mittels induktiver Kopplung mit der Transpondereinheit kombinierbar ist, ermöglicht somit eine Impedanzanpassung zwischen der Leseeinrichtung und der Transpondereinheit Das bedeutet, daß ausgehend von einer standardisierten Trans- pondereinheit eine Anpassung an eine von der Impedanz der Transpondereinheit abweichende Impedanz der Leseeinrichtung dadurch erfolgen kann, daß die Koppelspule hinsichtlich ihrer Impedanz im wesentlichen mit der Impedanz der Transpondereinheit übereinstimmt und die elektrisch mit der Koppelspule verbundene Antennenspule hinsichtlich ihrer Impedanz auf die Impedanz der Leseeinrichtung abgestimmt ist Somit ist es durch eine entsprechende Ausbildung der Spulenparameter von Koppelspule und Antennenspule möglich, ein und dieselbe Transpondereinheit mit sich hinsichtlich ihrer Impedanz voneinander unterscheidenden Leseeinrichtungen zu kombinieren Als derartige, die Impedanz der jeweiligen Spule beeinflussende Spulenparameter stehen bei Ausfuhrung des Koppelelements als Koppelspule beispielsweise der Drahtquerschnitt der Spule, die Lange des der jeweiligen Spule zugeordneten Spulendrahtes oder auch das zur Herstellung des Spulendrahtes verwendete Material zur VerfugungA transmission module designed in this way, which can be combined with the transponder unit by means of inductive coupling, thus enables impedance matching between the reading device and the transponder unit. This means that, starting from a standardized transponder unit, an adaptation to an impedance of the reading device that deviates from the impedance of the transponder unit thereby can take place that the coupling coil corresponds in terms of its impedance essentially to the impedance of the transponder unit and that the antenna coil electrically connected to the coupling coil is matched in terms of its impedance to the impedance of the reading device. It is therefore possible through a corresponding design of the coil parameters of the coupling coil and antenna coil, to combine one and the same transponder unit with reading devices which differ from one another in terms of their impedance When the coupling element is designed as a coupling coil, len parameters are available, for example, the wire cross section of the coil, the length of the coil wire assigned to the respective coil, or the material used to produce the coil wire
Eine weitere Möglichkeit der Anpassung einer Transpondereinheit an die jeweiligen Gegebenheiten des Einzelfalls hinsichtlich unterschiedlicher Ubertragungsdistanzen besteht nach Anspruch 2 erfindungsgemaß darin, ein Übertragungsmodul zur kontaktlosen Datenübertragung zwischen einem Chip und einer Leseeinrichtung vorzusehen, das eine Spulenanordnung mit einem Koppelelement und mindestens einer Antennenspule aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit einer elektrisch mit dem Chip verbundenen Transponderspule und die Antennenspule zur Herstellung einer beruhrungslosen Verbindung mit der Leseeinrichtung dient, wobei das als Koppelspule ausgebildete Kontaktelement derart ausgebildet ist, daß die Koppelspule als Primarspule eines mit der zugeordneten Transponderspule gebildetenAccording to the invention, a further possibility of adapting a transponder unit to the particular circumstances of the individual case with regard to different transmission distances is to provide a transmission module for contactless data transmission between a chip and a reading device, which has a coil arrangement with a coupling element and at least one antenna coil, the Coupling element for producing an inductive coupling with a transponder coil electrically connected to the chip and the antenna coil for producing a non-contact Connection to the reading device is used, wherein the contact element designed as a coupling coil is designed such that the coupling coil is formed as a primary coil with the associated transponder coil
Transformators zur Induzierung einer erhöhten Betriebsspannung im Chip der Transpondereinheit dientTransformer for inducing an increased operating voltage in the chip of the transponder unit
Bei dieser erfindungsgemaßen Losung macht man sich demnach die zwischen der Koppelspule und der Transponderspule gegebene induktive Kopplung zunutze, um aus der Koppelspule und der Transponderspule einen Transformator zu bilden, mit dem die Betriebsspannung in der Transpondereinheit erhöht werden kann Somit wird es möglich, ausgehend von einer standardisiert ausgelegten Transpondereinheit unterschiedliche Ubertragungsdistanzen dadurch zu überbrücken, daß entsprechend unterschiedlich ausgelegte Ubertragungsmodule verwendet werden, der Art, daß durch ein geeignetes Verhältnis der Windungszahlen zwi- sehen der Koppelspule und der Transponderspule das für die Induzierung der zur Überwindung der jeweiligen Ubertragungsdistanz notwendige Übersetzungsverhältnis festgelegt wirdIn this solution according to the invention, the inductive coupling between the coupling coil and the transponder coil is therefore used to form a transformer from the coupling coil and the transponder coil, with which the operating voltage in the transponder unit can be increased.This makes it possible to start from one standardized transponder unit to bridge different transmission distances by using differently designed transmission modules, such that a suitable ratio of the number of turns between the coupling coil and the transponder coil determines the transmission ratio necessary to induce the respective transmission distance
Neben der vorgenannten Möglichkeit, eine erhöhte Betriebsspannung in der Transpondereinheit über eine geeignete Festlegung des Windungzahl- Übersetzungsverhältnisses zu erzielen, gibt es auch die Möglichkeit, ganz allgemein das magnetische Feld der Koppelspule durch eine geeignete Verstarkungseinrichtung zu verstarken, um hierdurch eine entsprechend erhöhte Induktion und eine damit verbundene Spannungserhohung in der Transpondereinheit zu erzielen Eine derartige Verstarkungseinrichtung kann aus einer die an der Koppelspule anliegende Spannung erhöhenden oder erzeugenden Spannungsquelle gebildet sein, also etwa durch eine im Übertragungsmodul angeordnete, mit der Koppelspule kontaktierte Batterie Hierdurch laßt sich ein aktives Übertragungsmodul bilden, das über eine eigene Spannungsversorgung verfugtIn addition to the above-mentioned possibility of achieving an increased operating voltage in the transponder unit via a suitable definition of the number of turns and turns, there is also the possibility of generally increasing the magnetic field of the coupling coil by means of a suitable amplification device, in order to thereby increase the induction and accordingly to achieve the associated increase in voltage in the transponder unit.A strengthening device of this type can be formed from a voltage source which increases or generates the voltage applied to the coupling coil, that is to say, for example, by a battery arranged in the transmission module and contacted with the coupling coil.This enables an active transmission module to be formed which is via has its own power supply
Eine weitere Möglichkeit zur Erzielung einer Verstarkungswirkung besteht darin, die Koppelspule mit einem Kern aus einem permeablen Material, insbesondere Ferrit, zu versehen, der die magnetische Feldstarke der Koppelspule erhöht Die vorbeschriebene Verstarkungseinrichtung bildet somit auch eine von der Losung, die Koppelspule und die Transponderspule zur Bildung eines Transformators zu nutzen, unabhängige LosungAnother way to achieve a reinforcing effect is to provide the coupling coil with a core made of a permeable material, in particular ferrite, which has the magnetic field strength the coupling coil increases The above-described amplification device thus also forms a solution that is independent of the solution, the coupling coil and the transponder coil to be used to form a transformer
Bei einer besonderen Ausfuhrungsform des Ubertragungsmoduls, die als Kern einen permeablen Materialstab zur Ausbildung eines axial ausgerichteten Magnetfeldes verwendet, dient die Antennenspule gleichzeitig als KoppelspuleIn a special embodiment of the transmission module, which uses a permeable material rod as the core to form an axially aligned magnetic field, the antenna coil also serves as a coupling coil
Um eine Handhabung der Spulenanordnung als Übertragungsmodul und eine vereinfachte Applikation der Spulenanordnung auf einer Transpondereinheit oder einem Substrat einer Transpondereinheit zu ermöglichen, ist die Spulenanordnung auf einer Tragerfolie angeordnet Der Begriff „Tragerfolie" ist hier nicht einschränkend hinsichtlich einer für die Tragerfolie in Frage kommenden Materialauswahl zu verstehen, das heißt, entgegen einem weit verbreiteten Verständnis vom Bedeutungsinhalt des Begriffs „Tragerfolie" fallen unter diesen Begriff, wie er hier verwendet wird, nicht nur Kunststoffmaterialien, sondern auch naturliche Materialien, wie beispielsweise Zellfasern oder Papier Mit dem Begriff „Tragerfolie" soll hier lediglich zum Ausdruck gebracht werden, daß ein als Tragerfolie ausgebildetes Substrat im wesentlichen durch seine Flachendimension bestimmt ist und eine gegenüber der Flachenausdehnung eher zu vernachlässigende Dicke aufweistIn order to enable handling of the coil arrangement as a transmission module and simplified application of the coil arrangement on a transponder unit or a substrate of a transponder unit, the coil arrangement is arranged on a carrier film. The term “carrier film” is not restrictive here with regard to a material selection that is suitable for the carrier film understand, that is, contrary to a widespread understanding of the meaning of the term "carrier film" fall under this term, as it is used here, not only plastic materials, but also natural materials, such as cell fibers or paper with the term "carrier film" here can only be expressed that a substrate designed as a carrier film is essentially determined by its surface dimension and has a thickness that is rather negligible compared to the surface extension
Für bestimmte Anwendungsfalle, beispielsweise zur Herstellung einer mit einem derartigen Übertragungsmodul versehenen Chipkarte, ist es vorteil- haft, die Spulenanordnung insgesamt als Karteninlay auszubildenFor certain applications, for example for producing a chip card provided with such a transmission module, it is advantageous to design the coil arrangement as a whole as a card inlay
Soll die Spulenanordnung zur Verwendung bei codierten Etiketten oder dergleichen dienen, erweist es sich als vorteilhaft, wenn die Spulenanordnung auf einem Haftsubstrat ausgebildet istIf the coil arrangement is to be used for coded labels or the like, it proves to be advantageous if the coil arrangement is formed on an adhesive substrate
Die erfindungsgemaße Transpondervorrichtung ist nach Anspruch 1 1 mit einer Transpondereinheit und einem Übertragungsmodul versehen, wobei die Transpondereinheit einen Chip mit einer elektrisch mit dem Chip verbundenen Transponderspule und das Übertragungsmodul ein Koppelelement mit einer Antennenspule aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung dient, wobei zur Ermoglichung einer Anpassung zwischen der Transpondereinheit und der Leseeinrichtung das als Koppelspule ausgebildete Koppelelement und die Antennenspule hinsichtlich mindestens eines ihrer die Spulenimpedanz beeinflussenden Spulenparameter unterschiedlich ausgebildet sind Die Vorteile einer derartigen mit einem Übertragungs- modul versehenen Transpondervorrichtung sind bereits eingangs ausfuhrlich erläutert wordenThe transponder device according to the invention is provided according to claim 1 1 with a transponder unit and a transmission module, wherein the transponder unit has a chip with a transponder coil electrically connected to the chip and the transmission module has a coupling element with an antenna coil, the coupling element being used for inductive coupling to the transponder coil, and the antenna coil being electrically connected to the coupling element and for establishing a contactless connection serves with a reading device, in order to enable an adaptation between the transponder unit and the reading device, the coupling element designed as a coupling coil and the antenna coil are designed differently with respect to at least one of their coil parameters influencing the coil impedance. The advantages of such a transponder device provided with a transmission module are already detailed at the beginning have been explained
Weiterhin wird erfindungsgemaß nach Anspruch 12 eine Transpondervor- richtung mit einer Transpondereinheit und einem Übertragungsmodul vorgeschlagen, wobei die Transpondereinheit einen Chip mit einer elektrisch mit dem Chip verbundenen Transponderspule und das Übertragungsmodul ein Koppelelement mit einer Antennenspule aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung dient, wobei das Koppelelement als Koppelspule ausgebildet ist und eine vergleichsweise geringere Windungsanzahl als die Transponderspule aufweist, derart, daß die Koppelspule eine Primarspule und die Transponderspule eine Sekundarspule eines Transformators bildetFurthermore, according to the invention, a transponder device with a transponder unit and a transmission module is proposed, the transponder unit having a chip with a transponder coil electrically connected to the chip and the transmission module having a coupling element with an antenna coil, the coupling element for producing an inductive coupling with serves the transponder coil, and the antenna coil is electrically connected to the coupling element and is used to establish a contactless connection with a reading device, the coupling element being designed as a coupling coil and having a comparatively smaller number of turns than the transponder coil, such that the coupling coil is a primary coil and the Transponder coil forms a secondary coil of a transformer
Die Vorteile einer derartigen mit einem Übertragungsmodul versehenen Transpondereinrichtung im Zusammenhang mit einer hierdurch möglichen Erhöhung der Betriebsspannung der Transpondereinheit wurden bereits eingangs ausfuhrlich erörtertThe advantages of such a transponder device provided with a transmission module in connection with a possible increase in the operating voltage of the transponder unit have already been discussed in detail at the beginning
Eine weitere erfindungsgemaße Transpondervorrichtung nach Anspruch 13 ist mit einer Transpondereinheit und einem Übertragungsmodul versehen, wobei die Transpondereinheit einen Chip mit einer elektrisch mit demA further transponder device according to the invention is provided with a transponder unit and a transmission module, the transponder unit being a chip with an electrically connected to the
Chip verbundenen Transponderspule und das Übertragungsmodul ein Koppelelement mit einer Antennenspule aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung dient, wobei das Koppelelement aus einem permeablen Materialstab, insbesondere einem Ferritkern, gebildet ist, dessen Stirnflache als Koppelflache dient, und die Antennenspule um den Materialstab herum angeordnet istChip-connected transponder coil and the transmission module has a coupling element with an antenna coil, the coupling element being used to establish an inductive coupling with the transponder coil, and the antenna coil being electrically connected to the coupling element and serving to establish a contactless connection to a reading device, the coupling element being made of a permeable material rod, in particular a ferrite core, is formed, the end face of which serves as a coupling surface, and the antenna coil is arranged around the material rod
Bei einer derartig ausgebildeten Transpondervorrichtung ist aufgrund der stark gebündelten axialen Ausrichtung des durch den permeablen Materialstab erzeugten Magnetfeldes eine besonders effektive und damit verlustarme induktive Kopplung zwischen der Transponderspule der Trans- pondereinheit und der Antennenspule möglich, so daß bereits diese Konfiguration der Transpondervorrichtung unabhängig von der vorstehend geschilderten Möglichkeit der Impedanzanpassung oder der Hochtransformation der Betriebsspannung der Transpondereinheit lediglich durch die besonders verlustarme Kopplung über den Materialstab eine Erhöhung der Betriebsspannung in der Transpondereinheit ermöglichtIn a transponder device designed in this way, a particularly effective and therefore low-loss inductive coupling between the transponder coil of the transponder unit and the antenna coil is possible due to the strongly bundled axial alignment of the magnetic field generated by the permeable material rod, so that this configuration of the transponder device is independent of the above The described possibility of impedance matching or step-up transformation of the operating voltage of the transponder unit enables an increase in the operating voltage in the transponder unit only by the particularly low-loss coupling via the material rod
Als besonders vorteilhaft erweist es sich, daß die vorstehend geschilderte Konfiguration der Transpondervorrichtung aufgrund der besonders verlustarmen induktiven Kopplung zwischen der Antennenspule und der Transponderspule über den Materialstab die Verwendung einer Transpon- derspule ermöglicht, die als eine auf der Oberflache des Chips angeordnete Chipspule ausgebildet ist Derartige Chipspulen sind auch unter dem Begriff „Coil on Chip" bekanntIt has proven to be particularly advantageous that the configuration of the transponder device described above, because of the particularly low-loss inductive coupling between the antenna coil and the transponder coil via the material rod, enables the use of a transponder coil which is designed as a chip coil arranged on the surface of the chip Chip coils are also known under the term "coil on chip"
In einer speziellen Ausfuhrungsform der Transpondervorrichtung ist dabei der Chip mit seiner Ruckseite auf der Stirnflache des permeablen Materi- alstabs angeordnet, und die auf der der Ruckseite gegenüberliegenden Kontaktseite des Chips angeordnete Chipspule ist mit ihrer Spulenflache im wesentlichen deckungsgleich mit der Stirnflache des Materialstabs angeordnet Hieraus ergibt sich eine extrem miniaturisierte Transpondervorrichtung, wie sie beispielsweise bei einem Injektionstransponder Verwendung findetIn a special embodiment of the transponder device, the chip is arranged with its rear side on the end face of the permeable material rod, and the chip coil arranged on the contact side of the chip opposite the rear side is essentially congruent with the end face of the material rod with its coil surface This results in an extremely miniaturized transponder device, as used for example in an injection transponder
Bei dem erfindungsgemaßen Verfahren zum Betrieb einer Transpondervor- richtung mit einer einen Chip und eine Transponderspule aufweisenden Transpondereinheit und einem eine Koppelspule und eine mit der Koppelspule elektrisch verbundene Antennenspule aufweisenden Übertragungsmodul wird mittels des Ubertragungsmoduls die an eine mit der Transpondereinheit kommunizierende Leseeinrichtung angepaßte Impedanz der Antennenspule in eine an die Impedanz der Transpondereinheit angepaßte Impedanz der Koppelspule geändertIn the method according to the invention for operating a transponder device with a transponder unit having a chip and a transponder coil and a transmission module having a coupling coil and an antenna coil electrically connected to the coupling coil, the transmission module is used to adapt the impedance of the antenna coil to a reading device communicating with the transponder unit changed an impedance of the coupling coil adapted to the impedance of the transponder unit
Ein weiteres erfindungsgemaßes Verfahren zum Betrieb einer Transpondervorrichtung mit einer einen Chip und eine Transponderspule aufweisenden Transpondereinheit und einem eine Koppelspule und eine mit der Koppelspule elektrisch verbundene Antennenspule aufweisenden Übertragungsmodul besteht darin, die Koppelspule des Ubertragungsmoduls zusammen mit der Transponderspule als die Betriebsspannung in der Transpondereinheit erhöhenden Transformator zu verwendenAnother method according to the invention for operating a transponder device with a transponder unit having a chip and a transponder coil and a transmission module having a coupling coil and an antenna coil electrically connected to the coupling coil consists in the coupling coil of the transmission module together with the transponder coil as the operating voltage in the transponder unit, increasing the transformer to use
Nachfolgend werden bevorzugte Ausfuhrungsformen der erfindungsgema- ßen Ubertragungsmodule sowie Ausfuhrungsformen von mit derartigen Ubertragungsmodulen versehenen Transpondervorrichtungen unter Erläuterung möglicher Betriebsweisen derartiger Transpondervorrichtungen anhand der Zeichnungen naher erläutertPreferred embodiments of the transmission modules according to the invention, as well as embodiments of transponder devices provided with such transmission modules, are explained in more detail below with the explanation of possible modes of operation of such transponder devices with the aid of the drawings
Es zeigenShow it
Fig. 1 eine schematische Darstellung einer Datenubertra- gungsanordnung mit einer Transpondervorrichtung und einer Leseeinrichtung,1 shows a schematic illustration of a data transmission arrangement with a transponder device and a reading device,
Fig. 2 eine detaillierte Darstellung der in Fig. 1 schematisch dargestellten Transpondervorrichtung, Fig. 3 eine Schnittdarstellung einer in Lagentechnik aufgebauten, mit einer Transpondervorrichtung versehenen Chipkarte,2 shows a detailed illustration of the transponder device shown schematically in FIG. 1, 3 shows a sectional illustration of a chip card constructed using layer technology and provided with a transponder device,
Fig. 4 die in der in Fig. 3 dargestellten Chipkarte angeord- nete Transpondervorrichtung in einer Draufsicht,4 is a top view of the transponder device arranged in the chip card shown in FIG. 3,
Fig. 5 ein weiteres Ausfuhrungsbeispiel einer TranspondervorrichtungFig. 5 shows another embodiment of a transponder device
Fig. 1 zeigt eine Datenubertragungsanordnung 10 mit einer Transpondervorrichtung 1 1 und einer Leseeinrichtung 12 Die Transpondervorrichtung 1 1 umfaßt eine Transpondereinheit 13 und ein Übertragungsmodul 14 In der in Fig. 1 gewählten schematischen Darstellung weist die Transpondereinheit 13 einen Chip 15 und eine an Anschlußflachen 16, 17 des Chips 15 elektrisch angeschlossene Transponderspule 18 auf1 shows a data transmission arrangement 10 with a transponder device 11 and a reading device 12. The transponder device 11 comprises a transponder unit 13 and a transmission module 14. In the schematic illustration selected in FIG. 1, the transponder unit 13 has a chip 15 and one on connection surfaces 16, 17 of the chip 15 electrically connected transponder coil 18
Das Übertragungsmodul 14 besteht im vorliegenden Fall aus einem, hier als Koppelspule 19 ausgebildeten Koppelelement und einer elektrisch mit der Koppelspule verbundenen Antennenspule 20In the present case, the transmission module 14 consists of a coupling element, which is designed here as a coupling coil 19, and an antenna coil 20 which is electrically connected to the coupling coil
Das Übertragungsmodul 14 dient grundsatzlich dazu, die von einer Sendespule 21 der Leseeinrichtung 12 emittierte elektromagnetische Sendeleistung über die Antennenspule 20 aufzunehmen und mittels der Koppel- spule 19 induktiv auf die Transponderspule 18 der Transpondereinheit 13 zu übertragen Dabei kommt der Koppelspule 19 im wesentlichen die Aufgabe zu, das elektromagnetische Feld auf die Transponderspule 18 zu fokussieren, um eine möglichst effektive induktive Kopplung zwischen der Koppelspule 19 und der Transponderspule 18 zu erzielenThe transmission module 14 basically serves to receive the electromagnetic transmission power emitted by a transmission coil 21 of the reading device 12 via the antenna coil 20 and to transmit it inductively by means of the coupling coil 19 to the transponder coil 18 of the transponder unit 13. The coupling coil 19 essentially has the task to focus the electromagnetic field on the transponder coil 18 in order to achieve the most effective inductive coupling between the coupling coil 19 and the transponder coil 18
Eine weitere Funktion des Ubertragungsmoduls 14 besteht darin, über ein geeignetes Zusammenwirken mit der Transponderspule 18 eine Erhöhung der Betriebsspannung des Chips 15 zu bewirken, um eine vergrößerte Ubertragungsdistanz Δ zwischen der Transpondervorrichtung 1 1 und der Leseeinrichtung 12 zu ermöglichen Darüber hinaus ermöglicht das Übertragungsmodul 14 eine Anpassung derAnother function of the transmission module 14 is to increase the operating voltage of the chip 15 by means of a suitable interaction with the transponder coil 18, in order to enable an increased transmission distance Δ between the transponder device 11 and the reading device 12 In addition, the transmission module 14 enables an adaptation of the
Impedanz ZT der Transpondereinheit 13 an die Impedanz Z der Leseeinrichtung 12 dadurch, daß die Koppelspule 19 und die Antennenspule 20 in ihren Impedanzwerten im wesentlichen mit der Transpondereinheit 13 bzw der Leseeinrichtung 12 übereinstimmen bzw daran angepaßt sindImpedance Z T of the transponder unit 13 to the impedance Z of the reading device 12 in that the coupling coil 19 and the antenna coil 20 essentially match or are adapted in terms of their impedance values to the transponder unit 13 or the reading device 12
Fig. 2 zeigt zur eingehenderen Erläuterung der vorstehend angeführten Funktionsweisen des Ubertragungsmoduls 14 eine detaillierte Darstellung der Transpondervorrichtung 1 1 mit der Transpondereinheit 13 aus dem Chip 15 und der Transponderspulel δ und dem Übertragungsmodul 14 mit der Koppelspule 19 und der Antennenspule 202 shows, for a more detailed explanation of the above-described modes of operation of the transmission module 14, a detailed illustration of the transponder device 11 with the transponder unit 13 comprising the chip 15 and the transponder coil δ and the transmission module 14 with the coupling coil 19 and the antenna coil 20
Im vorliegenden Fall weist die Antennenspule 20 eine Windungszahl n = 8 und die Koppelspule 19 eine Windungszahl n = 10 auf Die Koppelspule 19 und die Antennenspule 20 sind über elektrische Leiter 22, 23 verbunden Aufgrund der im Zusammenhang mit der Windungszahl unterschiedli- chen Wicklungslange der Spulen bei ansonsten übereinstimmenden, dieIn the present case, the antenna coil 20 has a number of turns n = 8 and the coupling coil 19 has a number of turns n = 10. The coupling coil 19 and the antenna coil 20 are connected via electrical conductors 22, 23 on account of the different winding lengths of the coils in connection with the number of turns otherwise matching, the
Spulenimpedanz beeinflussenden Spulenparameter der Koppelspule 19 und der Antennenspule 20 weist im vorliegenden Fall die Koppelspule 19 eine im Vergleich zur Antennenspule 20 geringere Impedanz auf Die in Fig. 2 dargestellte Ausfuhrung des Ubertragungsmoduls 14 kann demnach beispielsweise so ausgeführt sein, daß die Koppelspule 19 an die relativ niedrige Impedanz der Transpondereinheit 13 angepaßt ist und die Antennenspule 20 an die relativ hohe Impedanz einer hier nicht naher dargestellten Leseeinrichtung angepaßt ist, so daß es mittels des Ubertragungsmoduls 14 möglich wird, eine hochohmige Leseeinrichtung mit einer niederohmigen Transpondereinheit zu verbinden, ohne daß hierzu die Transpondereinheit selbst, also die Transponderspule 18, unmittelbar impedanzmaßig angepaßt werden mußteCoil parameters influencing the coil impedance of the coupling coil 19 and the antenna coil 20 in the present case, the coupling coil 19 has a lower impedance than the antenna coil 20. The embodiment of the transmission module 14 shown in FIG. 2 can accordingly be designed, for example, so that the coupling coil 19 is connected to the relative low impedance of the transponder unit 13 is adapted and the antenna coil 20 is adapted to the relatively high impedance of a reading device not shown here, so that it is possible by means of the transmission module 14 to connect a high-resistance reading device to a low-resistance transponder unit without the transponder unit being used for this purpose itself, that is, the transponder coil 18, had to be adapted directly in terms of impedance
Bei der in Fig. 2 dargestellten Ausfuhrungsform des Ubertragungsmoduls 14 ergibt sich darüber hinaus durch ein Zusammenwirken der mit einer relativ niedrigen Windungszahl n = 10 versehenen Koppelspule 19 mit der eine relativ hohe Windungszahl n = 20 aufweisenden Transponderspule 18 über die hier durch einen schematisierten Feldlinienverlauf 24 angedeutete induktive Kopplung ein Transformatoreffekt, derart, daß die KoppelspuleIn the embodiment of the transmission module 14 shown in FIG. 2, the coupling coil 19 provided with a relatively low number of turns n = 10 and the transponder coil 18 having a relatively high number of turns n = 20 also result from the interaction of the transponder coil 18, which is represented here by a schematic field line course 24 suggested inductive coupling a transformer effect, such that the coupling coil
19 und die Transponderspule 18 als Primarspule bzw Sekundarspule eines19 and the transponder coil 18 as a primary coil or a secondary coil
Transformators 25 wirken, mit der Folge, daß in der Transponderspule 18 eine vergleichsweise erhöhte Spannung induziert wird, wodurch für den Chip 15 eine entsprechend erhöhte Betriebsspannung zur Verfugung stehtTransformers 25 act, with the result that a comparatively increased voltage is induced in the transponder coil 18, as a result of which a correspondingly increased operating voltage is available for the chip 15
Fig. 3 zeigt ein Übertragungsmodul 26 in einer Ausfuhrungsform als Karteninlay in einer in Schichttechnik gebildeten Chipkarte 273 shows a transmission module 26 in one embodiment as a card inlay in a chip card 27 formed using layer technology
Neben dem Übertragungsmodul 26 werden die weiteren Lagen aus einem Chipinlay 28 mit einem darin aufgenommenen Chip 29, einem Transpon- derspuleninlay 30 mit einer darin eingebetteten, mit dem Chip 29 kontaktierten Transponderspule 3 1 und zwei jeweils auf dem Chipinlay 28 bzw dem Übertragungsmodul 26 angeordneten äußeren Decklagen 32 und 33 gebildet Das Chipinlay 28 und das Transponderspuleninlay 30 bilden im vorliegenden Fall eine Transpondervorrichtung 49In addition to the transmission module 26, the other layers are made up of a chip inlay 28 with a chip 29 accommodated therein, a transponder coil inlay 30 with an embedded transponder coil 3 1, which is in contact with the chip 29, and two outer layers each arranged on the chip inlay 28 or the transmission module 26 Cover layers 32 and 33 formed The chip inlay 28 and the transponder coil inlay 30 form a transponder device 49 in the present case
Fig. 4 zeigt das Übertragungsmodul 26 in einer Draufsicht mit einer Koppelspule 34 und einer Antennenspule 35, die über Leiter 36, 37 miteinander verbunden sind und auf einer gemeinsamen, hier als Dunn- schichtsubstrat ausgeführten Tragerschicht 38 angeordnet sind, die im vorliegenden Fall aus einer Polyimidfolie bestehen kannFIG. 4 shows a top view of the transmission module 26 with a coupling coil 34 and an antenna coil 35, which are connected to one another via conductors 36, 37 and are arranged on a common carrier layer 38, here designed as a thin-layer substrate, which in the present case consists of a Polyimide film can exist
Sowohl die Transponderspule 3 1 als auch die Koppelspule 34 und dieBoth the transponder coil 3 1 and the coupling coil 34 and
Antennenspule 35 können als Drahtspulen sowie auch als auf sonstige Art und Weise realisierte Spulen ausgebildet seinAntenna coil 35 can be designed as wire coils and also as coils realized in some other way
Fig. 5 zeigt eine Transpondervorrichtung 39 mit einer Transpondereinheit 40, die aus einem Chip 41 und einer unmittelbar auf der mit Anschlußfla- chen versehenen Kontaktoberflache 42 angeordneten Transponderspule 43 gebildet ist Derartige Spulenanordnungen werden fachsprachlich auch mit dem Begriff „coil on chip" bezeichnet und können in einem Atz- oder Abscherverfahren her 1 g oev stellt werden5 shows a transponder device 39 with a transponder unit 40, which is formed from a chip 41 and a transponder coil 43 arranged directly on the contact surface 42 provided with connection surfaces. Such coil arrangements are also referred to in technical terms with the term “coil on chip” and can 1 g oe v can be produced in an etching or shearing process
Die Transpondervorrichtung 39 weist ein Übertragungsmodul 44 auf, das aus einer um einen Ferritkern 45 angeordneten, kurzgeschlossenen Anten- nenspule 46 besteht Abweichend von den in den Fig. 2 und 4 dargestellten Ubertragungsmodulen 14 und 26 erfolgt bei dem ÜbertragungsmodulThe transponder device 39 has a transmission module 44 which consists of a short-circuited antenna arranged around a ferrite core 45. The nominal coil 46 is different from the transmission modules 14 and 26 shown in FIGS. 2 and 4 takes place in the transmission module
44 die Fokussierung des von der Antennenspule 46 aufgenommenen elektromagnetischen Feldes auf die Transponderspule 43 nicht über eine Koppelspule, sondern über den das magnetische Feld stark bündelnden und axial ausrichtenden Ferritkern 4544 the focusing of the electromagnetic field picked up by the antenna coil 46 onto the transponder coil 43 not via a coupling coil, but rather via the ferrite core 45, which strongly bundles and axially aligns the magnetic field
Wie in Fig. 5 dargestellt, ermöglicht die Transpondervorrichtung 39 einen Aufbau, bei dem der Chip 41 mit seiner Ruckseite 47 unmittelbar auf einer Stirnflache 48 des Ferritkerns 45 positioniert werden kann Zur Erzielung einer möglichst effektiven induktiven Kopplung zwischen dem FerritkernAs shown in FIG. 5, the transponder device 39 enables a structure in which the rear side of the chip 41 can be positioned directly on an end face 48 of the ferrite core 45 in order to achieve the most effective inductive coupling between the ferrite core
45 und der Transponderspule 43 ist der Chip 41 derart auf der Stirnflache 48 des Ferritkerns 45 angeordnet, daß sich die Stirnflache 48, aus der im wesentlichen das magnetische Feld emittiert wird, und die Transponderspule 43 in einer Uberdeckungslage befinden45 and the transponder coil 43, the chip 41 is arranged on the end face 48 of the ferrite core 45 in such a way that the end face 48, from which the magnetic field is essentially emitted, and the transponder coil 43 are in an overlap position
Die in Fig. 5 dargestellte Transpondervorrichtung eignet sich in besonderem Maße zur Verwendung als sogenannter Injektionstransponder, bei dem die Transpondervorrichtung 39 hermetisch verschlossen in einem beispielsweise aus Glas gebildeten Injektionsbehalter angeordnet ist, der beispielsweise subkutan injiziert als Transponder zur Schlachtviehkennung verwendet werden kann The transponder device shown in FIG. 5 is particularly suitable for use as a so-called injection transponder, in which the transponder device 39 is hermetically sealed in an injection container, for example made of glass, which can be used, for example, injected subcutaneously as a transponder for slaughter cattle identification

Claims

Patentansprücheclaims
übertragungsmodul ( 14, 26, 44) zur kontaktlosen Datenübertragung zwischen einem Chip ( 15, 29, 41 ) und einer Leseeinrichtung (12) mit einer Spulenanordnung, die ein Koppelelement ( 19, 34) und mindestens eine Antennenspule (20, 35, 46) aufweist, welche elektrisch miteinander verbunden sind, wobei das Koppelelement zur Herstellung einer induktiven Kopplung (24) mit einer elektrisch mit dem Chip verbundenen Transponderspule (18, 3 1, 43) dient und die Antennenspule zur Herstellung einer Verbindung mit der Leseeinrichtung dient, wobei das als Koppelspule (19, 34) ausgebildete Koppelelement und die Antennenspule (20, 35, 46) hinichtlich ihrer die Spulenimpedanz beeinflussenden Spulenparameter unterschiedlich ausgebildet sindTransmission module (14, 26, 44) for contactless data transmission between a chip (15, 29, 41) and a reading device (12) with a coil arrangement, which has a coupling element (19, 34) and at least one antenna coil (20, 35, 46) which is electrically connected to one another, the coupling element being used to produce an inductive coupling (24) with a transponder coil (18, 3 1, 43) electrically connected to the chip and the antenna coil being used to establish a connection to the reading device, the Coupling elements designed as coupling coils (19, 34) and antenna coils (20, 35, 46) are designed differently with regard to their coil parameters influencing the coil impedance
Übertragungsmodul (14, 26, 44) zur kontaktlosen Datenübertragung zwischen einem Chip ( 15, 29, 41 ) und einer Leseeinrichtung (12) mit einer Spulenanordnung, die ein Koppelelement (19, 34) und mindestens eine Antennenspule (20, 35, 46) aufweist, welche elektrisch miteinander verbunden sind, wobei das Koppelelement zur Herstellung einer induktiven Kopplung (24) mit einer elektrisch mit dem Chip verbundenen Transponderspule ( 18, 3 1 , 43) dient und die Antennenspule zur Herstellung einer Verbindung mit der Leseeinrichtung dient, wobei das Koppelelement als Koppelspule ( 19, 34) ausgebildet ist und zwar derart, daß die Koppelspule als Primar- spule eines mit der zugeordneten Transponderspule ( 1 8, 3 1 ) gebildeten Transformators (25) zur Induzierung einer erhöhten elektrischen Betriebsspannung im Chip ( 1 5 , 29, 41 ) wirktTransmission module (14, 26, 44) for contactless data transmission between a chip (15, 29, 41) and a reading device (12) with a coil arrangement, which has a coupling element (19, 34) and at least one antenna coil (20, 35, 46) which is electrically connected to one another, the coupling element being used to produce an inductive coupling (24) with a transponder coil (18, 3 1, 43) electrically connected to the chip and the antenna coil being used to establish a connection to the reading device, the Coupling element is designed as a coupling coil (19, 34) in such a way that the coupling coil as the primary coil of a transformer (25) formed with the associated transponder coil (1 8, 3 1) to induce an increased electrical operating voltage in the chip (1 5, 29, 41) acts
Übertragungsmodul nach Anspruch 2, dadurch g e k e n n z e i c h n e t , daß die Koppelspule ( 19, 34) eine gegenüber der zugeordneten Transponderspule (18, 31) verringerte Windungszahl n aufweistTransmission module according to claim 2, characterized in that the coupling coil (19, 34) one opposite the assigned Transponder coil (18, 31) has a reduced number of turns n
Übertragungsmodul, insbesondere nach Anspruch 2 oder 3, zur kontaktlosen Datenübertragung zwischen einem Chip (15, 29, 41) und einer Leseeinrichtung (12) mit einer Spulenanordnung, die ein Koppelelement (19, 34) und mindestens eine Antennenspule (20,Transmission module, in particular according to claim 2 or 3, for contactless data transmission between a chip (15, 29, 41) and a reading device (12) with a coil arrangement which has a coupling element (19, 34) and at least one antenna coil (20,
35, 46) aufweist, welche elektrisch miteinander verbunden sind, wobei das Koppelelement zur Herstellung einer induktiven Kopplung (24) mit einer elektrisch mit dem Chip verbundenen Transponderspule (18, 31, 43) dient und die Antennenspule zur Herstellung einer Verbindung mit der Leseeinrichtung dient, wobei das Koppelelement als Koppelspule (19, 34) ausgebildet ist und die Koppelspule mit einer das magnetische Feld der Koppelspule verstärkenden Verstarkungseinrichtung versehen ist35, 46) which are electrically connected to one another, the coupling element being used to produce an inductive coupling (24) with a transponder coil (18, 31, 43) electrically connected to the chip and the antenna coil being used to establish a connection to the reading device , wherein the coupling element is designed as a coupling coil (19, 34) and the coupling coil is provided with a reinforcing device which amplifies the magnetic field of the coupling coil
übertragungsmodul nach Anspruch 4, dadurch g eke nnze i chnet , daß die Verstarkungseinrichtung aus einer die an der Koppelspule anliegende Spannung erhöhenden oder erzeugenden Spannungsquelle gebildet istTransmission module according to Claim 4, characterized in that the amplification device is formed from a voltage source which increases or generates the voltage applied to the coupling coil
Übertragungsmodul nach Anspruch 4, dadurch g eke nnzei chnet , daß die Verstarkungseinrichtung aus einem die an der Koppelspule erzeugte magnetische Feldstarke erhöhenden Kern aus permeablen Material gebildet istTransmission module according to Claim 4, characterized in that the amplification device is formed from a core made of permeable material which increases the magnetic field strength generated on the coupling coil
Übertragungsmodul nach Anspruch 6, dadurch g ek ennzei chnet , daß die Koppelspule gleichzeitig als Antennenspule (46) dient und als Kern einen permeablen Materialstab (45) zur Ausbildung eines axial ausgerichteten Magnetfeldes aufweist Übertragungsmodul nach einem oder mehreren der Ansprüche 1 bisTransmission module according to claim 6, characterized in that the coupling coil also serves as an antenna coil (46) and has a permeable material rod (45) as the core for forming an axially aligned magnetic field Transmission module according to one or more of claims 1 to
7, dadurch g ek ennzei chnet , daß die Spulenanordnung (34, 35) auf einem als Tragerfolie ausge- bildeten Substrat (38) angeordnet ist7, characterized in that the coil arrangement (34, 35) is arranged on a substrate (38) designed as a carrier film
übertragungsmodul nach Anspruch 8, dadurch g ekennz ei c hnet , daß die Spulenanordnung (34, 35) als Karteninlay (30) ausgebildet istTransmission module according to claim 8, characterized in that the coil arrangement (34, 35) is designed as a card inlay (30)
Übertragungsmodul nach Anspruch 8, dadurch g ek ennze i c hnet, daß die Spulenanordnung auf einem Haftsubstrat angeordnet istTransmission module according to claim 8, characterized in that the coil arrangement is arranged on an adhesive substrate
Transpondervorrichtung (11, 39) mit einer Transpondereinheit (13, 28, 30, 40) und einem Übertragungsmodul (14, 26, 44), wobei die Transpondereinheit einen Chip (15, 29, 41) mit einer elektrisch mit dem Chip verbundenen Transponderspule (18, 31, 43) und das Übertragungsmodul ein Koppelelement (19, 34) mit einer Antennenspule (20, 35, 46) aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung (12) dient, wobei zur Ermoglichung einer Anpassung zwischen der Transpondereinheit (13, 28, 30) und der Leseeinrichtung (12) das als Koppelspule ausgebildete Koppelelement (19, 34) und die Antennenspule (20, 35) hinsichtlich mindestens eines ihrer die Spulenimpedanz beeinflussenden Spulenparameter unterschiedlich ausgebildet sindTransponder device (11, 39) with a transponder unit (13, 28, 30, 40) and a transmission module (14, 26, 44), the transponder unit comprising a chip (15, 29, 41) with a transponder coil electrically connected to the chip ( 18, 31, 43) and the transmission module has a coupling element (19, 34) with an antenna coil (20, 35, 46), the coupling element being used for inductive coupling with the transponder coil, and the antenna coil being electrically connected to the coupling element and for establishing a contactless connection with a reading device (12), the coupling element (19, 34), which is designed as a coupling coil, and the antenna coil (20.) to enable adaptation between the transponder unit (13, 28, 30) and the reading device (12) , 35) are designed differently with respect to at least one of their coil parameters influencing the coil impedance
Transpondervorrichtung (11, 39) mit einer Transpondereinheit (13, 28, 30, 40) und einem Übertragungsmodul (14, 26, 44), wobei die Transpondereinheit einen Chip ( 15, 29, 41 ) mit einer elektrisch mit dem Chip verbundenen Transponderspule (18, 31 , 43) und das Übertragungsmodul ein Koppelelement ( 19, 34) mit einer Antennenspule (20, 35, 46) aufweist, wobei das Koppelelement zur Herstel- lung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung ( 12) dient, wobei das Koppelelement (19, 34) als Koppelspule ausgebildet ist und eine vergleichsweise geringere Windungszahl n als die Transponderspule ( 18, 3 1 ) aufweist, derart, daß die Koppelspule eine Primarspule und die Transponderspule eine Sekundarspule eines Transformators (25) bildetTransponder device (11, 39) with a transponder unit (13, 28, 30, 40) and a transmission module (14, 26, 44), the Transponder unit has a chip (15, 29, 41) with a transponder coil (18, 31, 43) electrically connected to the chip and the transmission module has a coupling element (19, 34) with an antenna coil (20, 35, 46), the coupling element is used to establish an inductive coupling with the transponder coil, and the antenna coil is electrically connected to the coupling element and is used to establish a contactless connection to a reading device (12), the coupling element (19, 34) being designed as a coupling coil and a comparative one has fewer turns n than the transponder coil (18, 3 1), such that the coupling coil forms a primary coil and the transponder coil forms a secondary coil of a transformer (25)
Transpondervorrichtung ( 1 1 , 39) mit einer Transpondereinheit (13 , 28, 30, 40) und einem Übertragungsmodul ( 14, 26, 44), wobei die Transpondereinheit einen Chip ( 15, 29, 41) mit einer elektrisch mit dem Chip verbundenen Transponderspule ( 18, 3 1 , 43) und das Übertragungsmodul ein Koppelelement ( 19, 34) mit einer Antennenspule (20, 35, 46) aufweist, wobei das Koppelelement zur Herstellung einer induktiven Kopplung mit der Transponderspule dient, und die Antennenspule elektrisch mit dem Koppelelement verbunden ist und zur Herstellung einer kontaktlosen Verbindung mit einer Leseeinrichtung (12) dient, wobei das Koppelelement aus einem permeablen Materialstab (45) gebildet ist, dessen Stirnflache (48) als Koppelflache dient, und die Antennenspule (46) um den Material- stab (45) herum angeordnet istTransponder device (1 1, 39) with a transponder unit (13, 28, 30, 40) and a transmission module (14, 26, 44), the transponder unit comprising a chip (15, 29, 41) with a transponder coil electrically connected to the chip (18, 3 1, 43) and the transmission module has a coupling element (19, 34) with an antenna coil (20, 35, 46), the coupling element being used for inductive coupling with the transponder coil, and the antenna coil electrically with the coupling element is connected and is used to establish a contactless connection with a reading device (12), the coupling element being formed from a permeable material rod (45), the end face (48) of which serves as a coupling surface, and the antenna coil (46) around the material rod ( 45) is arranged around
Transpondervorrichtung nach einem oder mehreren der Ansprüche 1 1 bis 13 , dadurch g e k e n n z e i c h n e t , daß die Transponderspule als eine auf der Oberflache (42) des Chips (41 ) angeordnete „Coil on Chip"-Chipspule (43) ausgebildet ist Transpondervorrichtung nach Anspruch 13 und 14, dadurch g eke nnzei chnet, daß der Chip (41) mit seiner Ruckseite (47) auf der Stirnflache (48) des permeablen Materialstabs (45) angeordnet ist und die auf der der Ruckseite (47) gegenüberliegenden Kontaktoberflache (42) desTransponder device according to one or more of Claims 1 1 to 13, characterized in that the transponder coil is designed as a “coil on chip” chip coil (43) arranged on the surface (42) of the chip (41) Transponder device according to Claims 13 and 14, characterized in that the chip (41) is arranged with its rear side (47) on the end face (48) of the permeable material rod (45) and the contact surface opposite the rear side (47) (42) of the
Chips (41) angeordnete Chipspule (43) mit ihrer Spulenflache im wesentlichen deckungsgleich mit der Stirnflache (48) des Materialstabs (45) angeordnet istChips (41) arranged chip coil (43) with its coil surface is substantially congruent with the end face (48) of the material rod (45)
Verfahren zum Betrieb einer Transpondervorrichtung (11, 27, 39) mit einer einen Chip (15, 29, 41) und eine Transponderspule (18,Method for operating a transponder device (11, 27, 39) with a chip (15, 29, 41) and a transponder coil (18,
31, 43) aufweisenden Transpondereinheit (13, 28, 30, 40) und einem eine Koppelspule (19, 34) und eine mit der Koppelspule elektrisch verbundene Antennenspule (20, 35) aufweisenden übertragungsmodul (14, 26), derart, daß mittels des Ubertragungsmoduls die an eine mit der Transpondereinheit kommunizierende Leseeinrichtung (12) angepaßte Impedanz der Antennenspule in eine an die Impedanz der Transpondereinheit angepaßte Impedanz der Koppelspule geändert wird31, 43) having transponder unit (13, 28, 30, 40) and a transmission module (14, 26) having a coupling coil (19, 34) and an antenna coil (20, 35) electrically connected to the coupling coil, such that by means of the Transmission module the impedance of the antenna coil adapted to a reading device (12) communicating with the transponder unit is changed into an impedance of the coupling coil adapted to the impedance of the transponder unit
Verfahren zum Betrieb einer Transpondervorrichtung (11, 27, 39) mit einer einen Chip (15, 29, 41) und eine Transponderspule (18,Method for operating a transponder device (11, 27, 39) with a chip (15, 29, 41) and a transponder coil (18,
31, 43) aufweisenden Transpondereinheit (13, 28, 30, 40) und einem eine Koppelspule (19, 34) und eine mit der Koppelspule elektrisch verbundene Antennenspule (20, 35) aufweisenden Übertragungsmodul (14, 26), derart, daß die Koppelspule (19, 34) des Ubertragungsmoduls (14, 26) zusammen mit der Transponderspule31, 43) having transponder unit (13, 28, 30, 40) and a transmission module (14, 26) having a coupling coil (19, 34) and an antenna coil (20, 35) electrically connected to the coupling coil, such that the coupling coil (19, 34) of the transmission module (14, 26) together with the transponder coil
(18, 31) als die Betriebsspannung im Chip (15, 29) erhöhender Transformator (25) wirkt (18, 31) acts as a transformer (25) increasing the operating voltage in the chip (15, 29)
PCT/DE1998/000237 1997-01-28 1998-01-27 Transmission module for a transponder device, transponder device and method for operating said device WO1998033142A1 (en)

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CA002279176A CA2279176A1 (en) 1997-01-28 1998-01-27 Transmission module for a transponder device, and also a transponder device and method of operating a transponder device
EP98909286A EP0956537A1 (en) 1997-01-28 1998-01-27 Transmission module for a transponder device, transponder device and method for operating said device
JP10531488A JP2000510271A (en) 1997-01-28 1998-01-27 Transmission module for transponder device, transponder device, and method of operating transponder device
AU63905/98A AU6390598A (en) 1997-01-28 1998-01-27 Transmission module for a transponder device, transponder device and method for operating said device

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DE19703029.7 1997-01-28
DE19703029A DE19703029A1 (en) 1997-01-28 1997-01-28 Transmission module for a transponder device and transponder device and method for operating a transponder device

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EP0956537A1 (en) 1999-11-17
CA2279176A1 (en) 1998-07-30

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