Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Patent
1997-10-31
2000-02-22
Bost, Dwayne D.
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
455273, 455137, 455139, H04B 106
Patent
active
060290560
ABSTRACT:
A space diversity receiver apparatus receives signals by two spatially separated antennas, controls the phase of the signal received by one of the antennas by a phase control circuit, combines the phase-controlled signal and the signal received by the other antenna by a combiner and outputs the combined signal. A digital detector digitally detects the center frequency level and the levels on high- and low-frequency sides of the center frequency of the combined signal. Phase is controlled in such a manner that the center frequency level will coincide with a set level and a deviation between the levels on the high- and low-frequency sides of the center frequency will become zero.
REFERENCES:
patent: 4326294 (1982-04-01), Okamoto et al.
patent: 4805229 (1989-02-01), Mobley
patent: 5203029 (1993-04-01), Betzl et al.
patent: 5345603 (1994-09-01), Laffont
patent: 5448602 (1995-09-01), Ohmori et al.
patent: 5530925 (1996-06-01), Garner
Iwamatsu Takanori
Kiyanagi Hiroyuki
Shibuya Yasuhiro
Suzuki Toshiaki
Bost Dwayne D.
Fujitsu Limited
Vuong Quochien B.
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