Far-field RF power extraction circuits and systems

Details Far-field RF power extraction circuits and systems Far-field RF power extraction circuits and systems

2007-01-23

2007-01-23

Trieu, Van T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S538160, C340S572700, C235S380000

Reexamination Certificate

active

10944676

ABSTRACT:
A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-field power extraction circuit includes an antenna for receiving an electromagnetic radiation signal, a rectifier for rectifying the electromagnetic radiation signal. The circuit may further include a charge pump for amplifying the rectified voltage, an impedance matching network for coupling the antenna to the rectifier and a feedback tuning circuit for optimizing performance of the extraction circuit.

REFERENCES:
patent: 6212431 (2001-04-01), Hahn et al.
patent: 6486776 (2002-11-01), Pollack et al.
patent: 6639459 (2003-10-01), Devilbiss
patent: 6693599 (2004-02-01), Chia et al.

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