Demodulation capacity of an electromagnetic transponder

Details Demodulation capacity of an electromagnetic transponder Demodulation capacity of an electromagnetic transponder

2005-02-22

2005-02-22

Nguyen, Duc M. (Department: 2685)

Telecommunications

Transmitter and receiver at separate stations

Near field

C455S572000, C455S343500, C455S899000, C340S693400, C340S010340

Reexamination Certificate

active

06859640

ABSTRACT:
An electromagnetic transponder including an oscillating circuit adapted to extracting from a radiating field a high-frequency amplitude-modulated signal, circuitry for extracting from said high-frequency signal an approximately D.C. supply voltage, a demodulator of data carried by the high-frequency signal, and circuitry for separately regulating the supply voltage and a useful voltage carrying the data.

REFERENCES:
patent: 4786903 (1988-11-01), Grindahl et al.
patent: 5345231 (1994-09-01), Koo et al.
patent: 5815355 (1998-09-01), Dawes
patent: 5889489 (1999-03-01), Friedman et al.
patent: 6052055 (2000-04-01), Bouvier
patent: 6288630 (2001-09-01), Bardouillet
patent: 6356198 (2002-03-01), Wuidart et al.
patent: 6636146 (2003-10-01), Wehoski
patent: 2 751 148 (1998-01-01), None
patent: 2 756 953 (1998-06-01), None
French Search Report from French Patent Application No. 00/05802, filed May 5, 2000.

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