WO2007024416A3 - Rfid reader and components thereof - Google Patents

Rfid reader and components thereof Download PDF

Info

Publication number
WO2007024416A3
WO2007024416A3 PCT/US2006/029629 US2006029629W WO2007024416A3 WO 2007024416 A3 WO2007024416 A3 WO 2007024416A3 US 2006029629 W US2006029629 W US 2006029629W WO 2007024416 A3 WO2007024416 A3 WO 2007024416A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
microprocessor
waveform
rfid reader
amplifier
Prior art date
Application number
PCT/US2006/029629
Other languages
French (fr)
Other versions
WO2007024416A2 (en
Inventor
Daniel Noah Paley
Roger Green Stewart
Liming Zhou
Vadim Kikin
Original Assignee
Applied Wireless Identificatio
Daniel Noah Paley
Roger Green Stewart
Liming Zhou
Vadim Kikin
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
Priority claimed from US11/207,348 external-priority patent/US7773695B2/en
Priority claimed from US11/367,061 external-priority patent/US20070206705A1/en
Priority claimed from US11/367,998 external-priority patent/US20070206701A1/en
Priority claimed from US11/367,060 external-priority patent/US20070206704A1/en
Application filed by Applied Wireless Identificatio, Daniel Noah Paley, Roger Green Stewart, Liming Zhou, Vadim Kikin filed Critical Applied Wireless Identificatio
Publication of WO2007024416A2 publication Critical patent/WO2007024416A2/en
Publication of WO2007024416A3 publication Critical patent/WO2007024416A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

A Radio Frequency Identification (RFID) reader according to one embodiment of the invention includes a first microprocessor acting as a controller, and a second microprocessor, e.g., DSP, in communication with the first microprocessor, the second microprocessor generating a digitally synthesized waveform. A converter converts the digitally synthesized waveform to an analog waveform. A modulator combines the analog waveform with a carrier signal for generating an outgoing signal. The waveform may have rising and falling edges of varying shape. A RFID reader in another embodiment includes an amplifier for amplifying an incoming RF signal, a switchable filter receiving an amplified signal from the amplifier, and mixers receiving a filtered signal from the filter. An RFID reader in another embodiment has adaptive carrier cancellation. A circuit for amplitude modulating a carrier signal is presented. Methods are also presented.
PCT/US2006/029629 2005-08-19 2006-07-27 Rfid reader and components thereof WO2007024416A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US11/207,348 US7773695B2 (en) 2005-08-19 2005-08-19 Amplitude modulator
US11/207,348 2005-08-19
US11/367,061 US20070206705A1 (en) 2006-03-03 2006-03-03 RFID reader with adjustable filtering and adaptive backscatter processing
US11/367,998 2006-03-03
US11/367,060 2006-03-03
US11/367,061 2006-03-03
US11/367,998 US20070206701A1 (en) 2006-03-03 2006-03-03 RFID reader with digital waveform encoding and digital decoding
US11/367,060 US20070206704A1 (en) 2006-03-03 2006-03-03 RFID reader with adaptive carrier cancellation

Publications (2)

Publication Number Publication Date
WO2007024416A2 WO2007024416A2 (en) 2007-03-01
WO2007024416A3 true WO2007024416A3 (en) 2007-05-18

Family

ID=37450981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029629 WO2007024416A2 (en) 2005-08-19 2006-07-27 Rfid reader and components thereof

Country Status (1)

Country Link
WO (1) WO2007024416A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104616038A (en) * 2015-01-07 2015-05-13 浙江海康科技有限公司 Automatic elimination method of RFID (radio frequency identification device) receiving circuit carrier and circuit thereof, and reader circuit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8175535B2 (en) 2008-02-27 2012-05-08 Telefonaktiebolaget Lm Ericsson (Publ) Active cancellation of transmitter leakage in a wireless transceiver
US9106269B2 (en) 2010-12-08 2015-08-11 Access Business Group International Llc System and method for providing communications in a wireless power supply
WO2012109137A2 (en) 2011-02-07 2012-08-16 Access Business Group International Llc System and method of providing communications in a wireless power transfer system
CN110969034B (en) * 2019-11-04 2022-10-14 锐捷网络股份有限公司 Carrier cancellation circuit and RFID reader-writer
CN111178105B (en) 2019-12-31 2021-08-24 上海移为通信技术股份有限公司 RFID (radio frequency identification) tag information reading device and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639509B1 (en) * 1998-03-16 2003-10-28 Intermec Ip Corp. System and method for communicating with an RFID transponder with reduced noise and interference

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639509B1 (en) * 1998-03-16 2003-10-28 Intermec Ip Corp. System and method for communicating with an RFID transponder with reduced noise and interference

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104616038A (en) * 2015-01-07 2015-05-13 浙江海康科技有限公司 Automatic elimination method of RFID (radio frequency identification device) receiving circuit carrier and circuit thereof, and reader circuit
CN104616038B (en) * 2015-01-07 2018-04-27 浙江海康科技有限公司 The automatic removing method of RFID reception circuit carrier and circuit and reader circuitry

Also Published As

Publication number Publication date
WO2007024416A2 (en) 2007-03-01

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