Resonant re-entrant cavity whip antenna

Details Resonant re-entrant cavity whip antenna Resonant re-entrant cavity whip antenna

1977-01-10

1978-12-05

Lieberman, Eli

Communications: radio wave antennas

Antennas

With vehicle

343722, 343750, 333 83R, H01Q 132, H01Q 918

Patent

active

041288408

ABSTRACT:
This invention relates generally to a 5/8 wave mobile whip antenna using a re-entrant resonant cavity as an electrically and physically integral component to obtain a narrow bandwith necessary to attenuate off channel interference. One embodiment is a coaxial type of re-entrant cavity resonator as an electrically and physically integral part of a 5/8 wave whip antenna. A second embodiment is a hybrid type of re-entrant cavity resonator referred to as a helical cavity resonator as an electrically and physically integral part of a 5/8 wave whip antenna.

REFERENCES:
patent: 2167201 (1939-07-01), Dallenbach
patent: 2509253 (1950-05-01), Schriefer
patent: 2513761 (1950-07-01), Tyson
patent: 2603754 (1952-07-01), Hansen
patent: 2644089 (1953-06-01), Bliss
patent: 2941204 (1960-06-01), Bailey
patent: 3293646 (1966-12-01), Brueckmann
patent: 3750181 (1973-07-01), Kuecken

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