Multi-frequency vehicular antenna system

Details Multi-frequency vehicular antenna system Multi-frequency vehicular antenna system

1986-04-07

1988-06-14

Sikes, William L.

Communications: radio wave antennas

Antennas

With vehicle

343713, H01Q 132

Patent

active

047515147

ABSTRACT:
An antenna system which operates over a wide spectrum of radio frequencies by utilizing a body of a vehicle as an antenna. The antenna system comprises a tuned impedance-matching coupler and a uniquely-configured floating, low-capacitance coaxial transmission line. In this arrangement, the outer conductor of the transmission line connecting the coupler to the vehicular body is severed at both ends. Thus, electrical connection between the coupler and the vehicle body is provided only by the transmission line's center conductor and the line's capacitive coupling. Antenna performance with the instant configuration exhibits improved voltage standing wave ratios and field strength as compared to conventional radio antennas.

REFERENCES:
patent: 1792193 (1931-02-01), Stewart
patent: 3646561 (1972-02-01), Clarke
patent: 3717876 (1973-02-01), Volkers
patent: 3916413 (1975-10-01), Davis
patent: 3961330 (1976-06-01), Davis
patent: 4117490 (1978-09-01), Arnold
patent: 4160977 (1979-07-01), Davis
patent: 4317121 (1982-02-01), Allen, Jr. et al.
patent: 4331961 (1982-05-01), Davis

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