Broadband shaped beam antenna employing a cavity backed spiral r

Details Broadband shaped beam antenna employing a cavity backed spiral r Broadband shaped beam antenna employing a cavity backed spiral r

1979-08-23

1981-05-19

Lieberman, Eli

Communications: radio wave antennas

Antennas

Antenna with parasitic director

343895, H01Q 136

Patent

active

042688337

ABSTRACT:
An antenna for use in navigation and communication satellite systems, which has a hemispheric response pattern. The antenna is constructed of a pair of conductors formed into a planar spiral and backed by a cavity. Radial elements extend orthogonal to the spiral axis outwardly around the periphery of the spiral. A crossed pair of parasitic elements is located above and coplanar to the spiral plane.

REFERENCES:
patent: 3152330 (1964-10-01), Chatelain
patent: 3205498 (1965-09-01), Child
patent: 3820117 (1974-06-01), Hall et al.

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