Whip antenna of reduced length for VHF radio communication

Details Whip antenna of reduced length for VHF radio communication Whip antenna of reduced length for VHF radio communication

1980-01-07

1981-03-03

Lieberman, Eli

Communications: radio wave antennas

Antennas

With vehicle

343861, 343864, H01Q 132, H01Q 918

Patent

active

042544203

ABSTRACT:
A VHF whip antenna of reduced physical length comprising a whiplike electrical conductor mounted atop a hollow, plastic, sealed cylindrical housing having a coaxially mounted circuit support tube mounted therein, with a highly resonant circuit attached thereto. Resonance is achieved in the circuit from a U-shaped inductance of a predetermined length mounted on the inside support tube, the inductance being coupled in series electrically with a variable capacitor. The whip conductor is designed to be three half-wave lengths long and when in combination with the resonant circuit, radiates power in perfect phase relationship that accounts for a power gain in the order of ten DB.

REFERENCES:
patent: 2124424 (1938-07-01), Leeds
patent: 4128840 (1978-12-01), Tucker

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