Directionally sensitive receiving antenna employing gyrotropic m

Details Directionally sensitive receiving antenna employing gyrotropic m Directionally sensitive receiving antenna employing gyrotropic m

1987-01-15

1990-03-06

Hille, Rolf

Communications: radio wave antennas

Antennas

Including magnetic material

H01Q 1909

Patent

active

049070100

ABSTRACT:
Antenna apparatus has two laterally spaced waveguide horns with apertures covered by layers of gyrotropic ferrite material. The layers are angled to present opposite angles of incidence to radiation from a common distant source. Electromagnets produce magnetic fields in and parallel with the ferrite layers. The relative phase or amplitude of energy received on the horns is compared to indicate the direction of the source.

REFERENCES:
patent: 2973516 (1961-02-01), Medved
patent: 3246332 (1966-04-01), Waldman et al.
patent: 3543374 (1970-10-01), Johnson
patent: 3594804 (1971-07-01), Hersch
patent: 4573055 (1986-02-01), Wright
patent: 4588994 (1986-05-01), Tang et al.
Radiation from Ferrite-Filled Apertures, Angelakos et al., Proceedings of the IRE, vol. 44, No. 10, Oct. 1956.

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