Dual mode antenna having simultaneous operating modes

Details Dual mode antenna having simultaneous operating modes Dual mode antenna having simultaneous operating modes

1983-12-19

1987-01-06

Lieberman, Eli

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

343876, 343895, H01Q 136, H01Q 324

Patent

active

046350705

ABSTRACT:
A dual mode broad band antenna especially designed to provide simultaneously high and low angle radiation patterns relative to a horizontal ground plane is disclosed herein. This particular antenna utilizes four wire radiators in the form of an inverted conical log-spiral supported in a vertically extending fashion a predetermined distance above the horizontal ground plane. In order to operate the antenna in its high and low angle modes simultaneously, first and second oppositely phased AC currents are applied to the radiators in two different ways through specifically connected hybrid isolating transformers.

REFERENCES:
patent: 3392395 (1968-07-01), Hannan
patent: 3396398 (1968-08-01), Dunlavy
patent: 3470559 (1969-09-01), Radford
patent: 3740756 (1973-06-01), Sosin
patent: 4101901 (1978-07-01), Kommrusch
patent: 4103304 (1978-07-01), Burnham

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