System of directional antennas with means for reducing flutter

Details System of directional antennas with means for reducing flutter System of directional antennas with means for reducing flutter

1980-11-12

1983-09-13

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

455137, H04B 700

Patent

active

044045638

ABSTRACT:
Flutter in received radio signals at and above 150 MHz is reduced by a system having a plurality of directional antennas with receiving patterns that can be caused to rotate to sweep in azimuth. The antenna that receives the strongest signal is stopped from sweeping until another antenna receives a stronger signal, at which time it is stopped from sweeping and the antenna that was stopped is swept. Signals from all antennas are combined in a maximal-ratio diversity receiver to provide a combination of the signals that is additive regardless of their relative phase.

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patent: 4027247 (1977-05-01), Aranguren
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patent: 4074266 (1978-02-01), Yokoi et al.
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