3-Channel selectable polarization, target discrimination antenna

Details 3-Channel selectable polarization, target discrimination antenna 3-Channel selectable polarization, target discrimination antenna

1965-12-22

1976-10-26

Farley, Richard A.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

333 11, 333 21A, 343 16M, 343756, H01Q 1524

Patent

active

039887324

ABSTRACT:
A monopulse radar antenna having an improved three-channel feedhorn for piding selectable polarization and greater target discrimination. The antenna feed employs a comparator having a difference port, a first sum port, and a second sum port utilizing a coupling pin or probe therein, between the comparator ports and an adjustable polarization device, for receiving and separating returned energy which has become cross-polarized with respect to the polarization of the transmitting sum arm, by reflection from an asymmetrical target. The three-channel feedhorn makes possible the identification of different types of targets, and the detection of hidden targets in rough terrain, forests, underbrush, and rough seas.

REFERENCES:
patent: 2965898 (1960-12-01), Lewis
patent: 3109996 (1963-11-01), Allen

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