Detector and modulator circuits for passive microwave links

Details Detector and modulator circuits for passive microwave links Detector and modulator circuits for passive microwave links

1995-03-24

1997-01-28

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Having electric space discharge device

343702, 455280, H01Q 126

Patent

active

055981690

ABSTRACT:
An RF apparatus (e.g., a wireless label) provides improved backscattering of an incident RF signal by utilizing a separate modulator diode, which connects across the antenna, to modulate the backscattering of the antenna. A separate detector diode connects across the antenna through an impedance matching network to detect modulated signals received by the antenna.

REFERENCES:
patent: 3098973 (1963-07-01), Wickersham et al.
patent: 3852755 (1974-12-01), Works et al.
patent: 4313121 (1982-01-01), Campbell et al.
patent: 5386214 (1995-01-01), Sugawara

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