Base loaded antenna

Details Base loaded antenna Base loaded antenna

1988-10-03

1989-11-21

Hille, Rolf

Communications: radio wave antennas

Antennas

With vehicle

343749, 343888, 343906, H01Q 112, H01Q 132

Patent

active

048825913

ABSTRACT:
A base loaded antenna is provided, which securely holds the inductive loading coil of the antenna while minimizing capacitive coupling of adjacent coil turns. A coil support has fins with grooves that hold the coil, so most of the space between adjacent coil turns contains only air. A cover surrounds the coil, and the coil support is loaded in tension while the cover is loaded in corresponding compression. A base on which the coil support and cover are mounted, is held to a vehicle sheet metal body by a star plate that lies on the underside of the sheet metal. The star plate has bent-up peripheral portions that "dig" into the sheet metal to make an electrical ground connection therewith, and a flat middle for making electrical and mechanical connections to outer coaxial conductors.

REFERENCES:
patent: 2406961 (1946-09-01), Nichol
patent: 2425304 (1947-08-01), Combs
patent: 3145384 (1964-08-01), Nuttle
patent: 3249945 (1966-05-01), Lewis
patent: 3453618 (1969-07-01), Ukmar et al.
patent: 3561111 (1971-02-01), Beck et al.
patent: 4086596 (1978-04-01), Gauss et al.
patent: 4161710 (1979-07-01), Kakurai
patent: 4170777 (1979-10-01), Liautaud

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