Multimode omniantenna with flush mount

Details Multimode omniantenna with flush mount Multimode omniantenna with flush mount

1987-05-11

1988-12-13

Sikes, William L.

Communications: radio wave antennas

Antennas

Slot type

343725, 343789, 343814, H01Q 500

Patent

active

047914297

ABSTRACT:
A central aperture provides at least two radiation pattern modes. A second aperture concentric with the central aperture provides at least two radiation pattern modes. A first feed system excites the central aperture and a second feed system excites the concentric aperture. Circuit means associated with the second feed system provides an auxiliary excitation to the concentric aperture which results in optimizing the radiation pattern obtained during excitation of the central aperture.

REFERENCES:
patent: 2838754 (1958-06-01), Bickmore
patent: 4208660 (1980-06-01), McOwen, Jr.
patent: 4451832 (1984-05-01), Stites

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