Homodyne RFID receiver and method

Details Homodyne RFID receiver and method Homodyne RFID receiver and method

2007-04-24

2007-04-24

Tweel, Jr., John (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S010100, C342S042000

Reexamination Certificate

active

10993316

ABSTRACT:
An RFID circuit comprising an RF carrier signal source, a hybrid coupled to the RF carrier signal source operable to generate first and second phase-shifted RF carrier signals, first and second mixers coupled to the hybrid each operable to multiply a respective one of the first and second carrier signals and a received backscattered modulated carrier signal and generate first and second baseband signals, respectively, and first logic coupled to the first and second mixers operable to select one of the first and second baseband signals having a larger amplitude as a demodulated RFID output signal.

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International Search Report and Written Opinion of the international Searching Authority mailed Mar. 15, 2006 for PCT Application No. PCT/US2005/040554, 10 pages.

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