Motor driven shunt for gamma match antenna

Details Motor driven shunt for gamma match antenna Motor driven shunt for gamma match antenna

1994-01-18

1995-06-13

Hajec, Donald

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

343745, H01Q 900, H01Q 916

Patent

active

054247519

ABSTRACT:
The invention is to a gamma matching antenna in which a motor driven shunt is used to adjust the gamma match feed line. The shunt is movable along the antenna driven element and the gamma march rod on brushes or rollers that are in good electrical contact with the gamma rod and driven element, and allows the shunt to move along both element without binding. A control circuit moves the shunt in response to, and to minimize the SWR of the antenna.

REFERENCES:
patent: 2976532 (1961-03-01), Guest
patent: 4184165 (1980-01-01), Vye
patent: 5072233 (1991-12-01), Zanzig

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