Space diversity system

Details Space diversity system Space diversity system

1983-07-11

1985-02-12

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

455139, 455276, 455278, 375100, H04B 708

Patent

active

044988850

ABSTRACT:
A space diversity system for transmitting digital microwaves is disclosed. Each of two antennas receives a direct wave and an interference wave. The output phase of one of the two antennas is controlled to combine an output thereof with that of the other antenna, so that the interference waves cancel each other and a vector sum of the direct waves is produced as a combined output. Even if the two antenna inputs are so much alike, the combined output level and thereby the signal-to-noise ratio is prevented from being lowered whereby error in identification is eliminated.

REFERENCES:
patent: 4326294 (1982-04-01), Okamoto et al.
patent: 4373210 (1983-02-01), Karabinis et al.
patent: 4384366 (1983-05-01), Kaitsuka

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