WO2004006175A1 - Transponderschaltung - Google Patents
Transponderschaltung Download PDFInfo
- Publication number
- WO2004006175A1 WO2004006175A1 PCT/EP2003/007418 EP0307418W WO2004006175A1 WO 2004006175 A1 WO2004006175 A1 WO 2004006175A1 EP 0307418 W EP0307418 W EP 0307418W WO 2004006175 A1 WO2004006175 A1 WO 2004006175A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resonator
- transponder circuit
- circuit according
- high quality
- transponder
- Prior art date
Links
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
- G06K19/0723—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 invention relates to a transponder circuit with a high quality resonator and a demodulator.
- the AM-modulated signal emitted by a transmitting and receiving device after its demodulation has a frequency corresponding to the resonance frequency of the resonator of high quality for excitation of the resonator of high quality.
- transponders for identification tasks.
- the known systems (see Finkenzeller, "RFID-Handbuch", 2nd edition, Hanser Verlag, Kunststoff, 2000, ISBN 3-446-21278-7) either require high field strengths of the reading device or a battery for the supply of the necessary semiconductor circuits.
- the SAW transponders which are also known, are fixed in the transferable data already during manufacture.
- the transponder circuit With the transponder circuit, data and / or measured values can be called up and / or updated wirelessly.
- the high quality resonator is used to match an input impedance to the load impedance of the semiconductor circuit.
- Possible but not exclusive applications of this invention are ID transmitters, energy self-sufficient sensor systems or storage for data, e.g. for the measuring system described in DE 0019621354.
- DE 19535543 A1 relates, for example, to a radio interrogation system of this type in which a broadband transmitter and receiver and an identification and / or sensor arrangement serving as a transponder with high-quality resonators are provided, the resonators being of such a high quality that they store energy in them takes place. The energy is temporarily stored until the interference frequencies of the interrogation pulse have subsided. Depending on the frequency range and the size to be detected, different types of resonators are used. Corresponding converters are also provided in order to convert the signal from the antenna of the transponder into an input variable suitable for the respective resonators.
- DE 19844142 C2 discloses a programmable RF block for mobile radio applications, with individually adjustable passive components, such as resonators, being provided for setting a mechanically tunable adaptation network.
- the adjustment network is adjusted by assigning an adjustable passive component to an electric micromotor that can be controlled by a programmable control unit, and the characteristic values of the resonators can be set mechanically by shifting the earthing point.
- the resonators consume electrical energy during the actual adjustment period.
- US 6219532 B1 relates to impedance matching circuits of a matching network between the antenna and the transmitting and receiving device of a mobile radio device.
- a first and a second impedance matching circuit have different impedances, each of the circuits working in such a way that an impedance from the antenna side corresponds to an impedance from the transmitting and receiving circuit side.
- the invention has for its object to provide the power supply for a semiconductor circuit with which a transponder can be realized, in which the problems mentioned do not occur.
- the transponder circuit additionally has a rectifier, an energy store and a semiconductor circuit which are connected downstream of the resonator and the input impedance of the high quality resonator is matched to the load impedance of the semiconductor circuit in such a way that a supply voltage for the semiconductor circuit is achieved by the impedance transformation is obtained in energy storage.
- a basic idea of the invention is therefore to enable a suitable matching between the input impedance of the high-quality resonator and the load impedance of the semiconductor circuit, i.e. the impedances of various special components of the transponder circuit are matched.
- a broadband signal is used to excite the resonator.
- a two-tone signal can also be used to excite the resonator.
- the frequency of the excitation signal tracks the resonance frequency of the resonator (tracking).
- a quartz is preferably used for the high quality resonator. It is also expedient that a piezoelectric resonator is provided as a high quality resonator.
- a piezoelectric resonator made of langasite, gallium orthophosphate or lithium niobate can be used.
- the specific implementation of the necessary high quality resonator is not critical as long as the high quality requirement is met. Preferred further designs of the high quality resonator are:
- the stored data are used for the calibration of sensors.
- Fig. 1 shows a reader (1) with an integrated transceiver (2) and (3) and a transponder (12).
- the radio connection between the reader (1) and the transponder (12) takes place via the antenna of the reader (4) and the antenna of the transponder (13).
- the signal to the demodulator (7) and then the resonator becomes higher Quality (8) fed to its vibration excitation.
- a rectifier (9), an energy store (10) and a semiconductor circuit (11) are connected downstream of the resonator (8).
- the signal is then fed back to the antenna of the transponder (13) via a backscatter modulator (6).
- the information from the transponder is read out in two steps.
- an AM-modulated carrier frequency is transmitted by the transmitter (2).
- the modulation signal serves to excite the high quality resonator (8).
- the AM modulation frequency corresponds to the resonance frequency of the resonator. Due to the high quality, an impedance transformation takes place, whereby a relatively high supply voltage required for the semiconductor circuit (11) is obtained in the energy store (10). At this point in time, the semiconductor circuit is operated in the idle state, which results in a very low current consumption, which is synonymous with a high impedance.
- the semiconductor circuit (1 1) can send the user data back to the receiving device (3) via the known backscatter modulation circuit (6).
- the high quality of the resonator (8) requires excitation with the exact resonance frequency. Due to manufacturing tolerances or detuning from external influences (e.g. temperature or aging), this resonance frequency is initially not exactly known.
- the resonator can be excited in a broadband manner, as described in DE 19535543, although only a small part of the modulation energy is available for the excitation.
- the reader and the antenna of the transponder can thus be designed to be broadband, which means that in the event of a disturbance, an undisturbed frequency can be used.
- Such interference can be caused, for example, by third-party devices operating on the same frequency or by the radio field conditions (multipath reception).
- Another advantage is the possibility of adapting the transponder and the reading device to the carrier frequency that is best suited for the intended purpose without impairing the basic function. This allows one to Size or range optimized antenna are used or the regulatory conditions at the site are taken into account.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003257442A AU2003257442A1 (en) | 2002-07-09 | 2003-07-09 | Transponder circuit |
EP03762675A EP1595225A1 (de) | 2002-07-09 | 2003-07-09 | Transponderschaltung |
US10/520,811 US20060244567A1 (en) | 2002-07-09 | 2003-07-09 | Transponder circuit |
JP2004518764A JP2005532722A (ja) | 2002-07-09 | 2003-07-09 | トランスポンダの半導体回路の電力供給 |
US12/181,967 US20090042515A1 (en) | 2002-07-09 | 2008-07-29 | Transponder circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10231340A DE10231340B3 (de) | 2002-07-09 | 2002-07-09 | Transponderschaltung |
DE10231340.7 | 2002-07-09 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/181,967 Continuation US20090042515A1 (en) | 2002-07-09 | 2008-07-29 | Transponder circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004006175A1 true WO2004006175A1 (de) | 2004-01-15 |
Family
ID=29796275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/007418 WO2004006175A1 (de) | 2002-07-09 | 2003-07-09 | Transponderschaltung |
Country Status (6)
Country | Link |
---|---|
US (2) | US20060244567A1 (de) |
EP (1) | EP1595225A1 (de) |
JP (1) | JP2005532722A (de) |
AU (1) | AU2003257442A1 (de) |
DE (1) | DE10231340B3 (de) |
WO (1) | WO2004006175A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007021172B4 (de) * | 2007-05-05 | 2010-11-18 | Refractory Intellectual Property Gmbh & Co. Kg | Verwendung eines Sensors |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6134130A (en) | 1999-07-19 | 2000-10-17 | Motorola, Inc. | Power reception circuits for a device receiving an AC power signal |
US6219532B1 (en) | 1997-10-28 | 2001-04-17 | Nec Corporation | Movable radio terminal device capable of precisely matching impedances |
DE19844142C2 (de) | 1998-09-25 | 2002-04-18 | Siemens Ag | Programmierbarer HF-Block |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757035A (en) * | 1970-04-21 | 1973-09-04 | Skiatron Elect & Tele | Interrogated transponder system |
US3911433A (en) * | 1974-07-12 | 1975-10-07 | Us Army | Infrared microwave transponder |
JPS54120592A (en) * | 1977-12-09 | 1979-09-19 | Lintech Instr Ltd | Transponder |
TW228043B (de) * | 1992-06-26 | 1994-08-11 | Philips Electronics Nv | |
EP0677752B1 (de) * | 1994-04-15 | 2001-06-27 | Siemens Aktiengesellschaft | Sensorsystem |
US5744902A (en) * | 1995-05-16 | 1998-04-28 | The United States Of America As Represented By The Secretary Of The Army | Chemical and biological sensor based on microresonators |
EP0901417B1 (de) * | 1996-05-29 | 2002-02-27 | IQ-Mobil Electronics GmbH | Vorrichtung zur drahtlosen übertragung aus bewegten teilen |
JP3851971B2 (ja) * | 1998-02-24 | 2006-11-29 | 株式会社デンソー | Co2用圧縮機 |
FR2792136B1 (fr) * | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | Transmission en duplex dans un systeme de transpondeurs electromagnetiques |
US6441741B1 (en) * | 1999-05-17 | 2002-08-27 | Avid Identification Systems, Inc. | Overmolded transponder |
GB2352931A (en) * | 1999-07-29 | 2001-02-07 | Marconi Electronic Syst Ltd | Piezoelectric tag |
CN1604492A (zh) * | 2000-07-04 | 2005-04-06 | 克里蒂帕斯株式会社 | 信用卡类发射机应答器 |
FR2812986B1 (fr) * | 2000-08-09 | 2002-10-31 | St Microelectronics Sa | Detection d'une signature electrique d'un transpondeur electromagnetique |
JP3646258B2 (ja) * | 2001-10-31 | 2005-05-11 | 有限会社ピエデック技術研究所 | 水晶ユニットとその製造方法 |
US7158754B2 (en) * | 2003-07-01 | 2007-01-02 | Ge Medical Systems Global Technology Company, Llc | Electromagnetic tracking system and method using a single-coil transmitter |
-
2002
- 2002-07-09 DE DE10231340A patent/DE10231340B3/de not_active Expired - Fee Related
-
2003
- 2003-07-09 AU AU2003257442A patent/AU2003257442A1/en not_active Abandoned
- 2003-07-09 WO PCT/EP2003/007418 patent/WO2004006175A1/de active Application Filing
- 2003-07-09 US US10/520,811 patent/US20060244567A1/en not_active Abandoned
- 2003-07-09 EP EP03762675A patent/EP1595225A1/de not_active Withdrawn
- 2003-07-09 JP JP2004518764A patent/JP2005532722A/ja active Pending
-
2008
- 2008-07-29 US US12/181,967 patent/US20090042515A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6219532B1 (en) | 1997-10-28 | 2001-04-17 | Nec Corporation | Movable radio terminal device capable of precisely matching impedances |
DE19844142C2 (de) | 1998-09-25 | 2002-04-18 | Siemens Ag | Programmierbarer HF-Block |
US6134130A (en) | 1999-07-19 | 2000-10-17 | Motorola, Inc. | Power reception circuits for a device receiving an AC power signal |
Also Published As
Publication number | Publication date |
---|---|
EP1595225A1 (de) | 2005-11-16 |
US20090042515A1 (en) | 2009-02-12 |
AU2003257442A1 (en) | 2004-01-23 |
DE10231340B3 (de) | 2004-01-29 |
US20060244567A1 (en) | 2006-11-02 |
JP2005532722A (ja) | 2005-10-27 |
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