Antenna system to reduce fading caused by multipath transmission

Details Antenna system to reduce fading caused by multipath transmission Antenna system to reduce fading caused by multipath transmission

1978-02-28

1981-03-17

Lieberman, Eli

Communications: radio wave antennas

Antennas

Waterborne

343766, 343854, H01Q 134, H01Q 328

Patent

active

042570484

ABSTRACT:
An antenna system including a single directional antenna having a single directional gain pattern for receiving electromagnetic waves in a certain direction. The orientation of the directional gain pattern is varied to vary the gain of the antenna in directions other than the certain direction in which electromagnetic waves are to be received. The gain is varied at a frequency higher than that of amplitude variations superimposed on the received electromagnetic waves while maintaining the gain substantially constant in the certain direction in which electromagnetic waves are to be received. The antenna gain variations in the directions other than the certain direction are effective to reduce the amplitude of received undesired electromagnetic waves and thereby diminish amplitude variations caused by these undesired electromagnetic waves.

REFERENCES:
patent: 3435453 (1969-03-01), Howard
patent: 3876947 (1975-04-01), Giraudon
patent: 3881177 (1975-04-01), Len et al.

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