1977-05-11
1979-02-27
Griffin, Robert L.
325 56, 325 59, 325154, 325157, 325158, H04B 706
Patent
active
041421558
ABSTRACT:
A common baseband digital signal is applied to a plurality of frequency modulators generating frequency modulated signals the carrier frequencies of which are equal to that of a common reference frequency oscillator, and the peak frequency deviations of the frequency modulated signals are made slightly different from each other.
REFERENCES:
patent: 2429504 (1947-10-01), Ziegler
patent: 3713040 (1973-01-01), Page, Jr.
patent: 4051438 (1977-09-01), Pickett et al.
"Modulation Theory," Harold S. Black, 1953, pp. 192-195, D. Van Nostrand Co. Inc.
Bookbinder Marc E.
Griffin Robert L.
Nippon Telegraph and Telephone Public Corporation
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