High efficiency helical antenna

Details High efficiency helical antenna High efficiency helical antenna

1987-06-22

1989-01-24

Sikes, William L.

Communications: radio wave antennas

Antennas

Spiral or helical type

343790, 343749, H01Q 136

Patent

active

048003956

ABSTRACT:
An antenna is provided which includes a half wave helical element RF coupled to a monopole element. The monopole element is situated on the axis of the helical element and extends into the helical element a distance sufficient to permit resonant coupling between the helical element and the monopole element. The monopole element is driven by a source of radio frequency energy such that the helical element coupled thereto is excited by such radio frequency energy.

REFERENCES:
patent: 2895130 (1959-07-01), Klancnik, Jr.
patent: 4121218 (1978-10-01), Irwin et al.
patent: 4137534 (1979-01-01), Goodnight
patent: 4138681 (1979-02-01), Davidson et al.
patent: 4214247 (1980-07-01), Richmond
patent: 4229743 (1980-10-01), Vo et al.
patent: 4259673 (1981-03-01), Guretsky
patent: 4309707 (1982-01-01), James et al.
patent: 4442438 (1984-04-01), Siwiak et al.
patent: 4543581 (1985-09-01), Nemet

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