Fiber optic antenna radiation efficiency tuner

Details Fiber optic antenna radiation efficiency tuner Fiber optic antenna radiation efficiency tuner

1991-10-11

1994-11-22

Hajec, Donald

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

343749, 333262, 327427, 327365, 327514, H01Q 900

Patent

active

053673107

ABSTRACT:
A system for switching an antenna formed of multiple connected segments is set forth. The various segments are connected together by a switch means having, in the preferred embodiment, one or more FETs; a gate controlled terminal is connected with a bias circuit which is biased on or off by a bias circuit triggered to switch by light. The light is coupled through an optical fiber which directs light onto a portion of the bias circuit to cause operation. The bias circuit preferably includes a photo voltaic cell.

REFERENCES:
patent: 3339205 (1967-08-01), Smitka
patent: 4564843 (1986-01-01), Cooper
patent: 4751513 (1988-06-01), Daryoush et al.
patent: 4843354 (1989-06-01), Fuller et al.
patent: 4920285 (1990-04-01), Clark et al.
patent: 4924238 (1990-05-01), Ploussios
patent: 4929855 (1990-05-01), Ezzeddine
patent: 4939525 (1990-07-01), Brunner
patent: 5159297 (1992-10-01), Tateno

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