Pulse or digital communications – Repeaters – Testing
Patent
1978-05-15
1980-08-05
Fears, Terrell W.
Pulse or digital communications
Repeaters
Testing
455137, 455273, H04B 116
Patent
active
042164281
ABSTRACT:
A receiving system without antenna switching wherein signals received by two or more spaced antennas are heterodyned using local oscillation signals at frequencies spaced from each other by not less than the fundamental frequency of a modulating signal. The resultant intermediate frequency outputs are combined and detected to produce an output signal.
REFERENCES:
patent: 2375126 (1945-05-01), Mathes
patent: 2375126 (1970-11-01), Takagi
patent: 2520188 (1950-08-01), Yando
patent: 3382499 (1968-05-01), Baud
"Interference in Mobile Radio System", Report on Research & Development, vol. 11, No. 2, Matsushita Communications Industrial Co., pp. 1959-1962.
Sakamoto Masayuki
Tatsuzawa Yoshinobu
Wasai Hiromi
Fears Terrell W.
Matsushita Electric - Industrial Co., Ltd.
Nippon Telegraph & Telephone Public Corp.
Psitos Aristotelis M.
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