Feed system for microwave antenna employing pattern control elem

Details Feed system for microwave antenna employing pattern control elem Feed system for microwave antenna employing pattern control elem

1977-09-01

1979-12-11

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343840, H01Q 1914

Patent

active

041785762

ABSTRACT:
A feed system for a dish-type microwave antenna has a primary radiator for directing a primary radiation pattern onto the dish-type antenna. A pair of symmetrical pattern control elements are aligned with the E plane of the antenna and extend radially outwardly from opposite sides of the axis of the primary radiator between the primary radiator and the antenna for increasing the antenna gain, reducing the sidelobe levels and reducing the half power beamwidth of the antenna in both the E and H planes. In an exemplary embodiment, the pattern control elements comprise metal strips mounted on the surface of a rigid coaxial cable extending along the axis of the primary radiator for transmitting microwaves to and from the primary radiator, and the metal strips are inclined toward the antenna.

REFERENCES:
patent: 2370053 (1945-02-01), Lindenblad
patent: 2605416 (1952-07-01), Foster
patent: 2627028 (1953-01-01), Nowak
patent: 2671855 (1954-03-01), Van Atta
patent: 2759182 (1956-08-01), Chaffee

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