Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1983-12-27
1985-12-31
LaRoche, Eugene R.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
332 16R, 332 19, H03C 300
Patent
active
045624143
ABSTRACT:
There is disclosed a new and improved frequency modulation system and method for providing a frequency modulated signal which varies in frequency from a center frequency in response to the amplitude of an analog modulating signal. The system and method utilizes a frequency shift synthesizer to provide the frequency modulated signal and digital techniques for quantizing the amplitude modulating signal and providing dividing factors to the frequency shift synthesizer responsive to the amplitude quantization.
REFERENCES:
patent: 3781706 (1973-12-01), Osborne et al.
patent: 4110706 (1978-08-01), Matsumoto et al.
patent: 4119925 (1978-10-01), Bosselaers
patent: 4296407 (1981-10-01), Minakuchi
Linder Donald L.
Murphy William R.
LaRoche Eugene R.
Motorola Inc.
Paniaguas John S.
Pascal Robert J.
Roney Edward M.
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