Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1983-08-12
1985-04-09
Grimm, Siegfried H.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
331 23, 331 36C, 331117FE, 331177V, 332 18, 332 19, 332 30V, H03C 308, H03C 309
Patent
active
045104654
ABSTRACT:
In a compensated VCO circuit arrangement for providing constant modulation level over a wide frequency band a VCO is disclosed having a linear VCO gain factor vs. control voltage curve over the wide frequency band of interest. A compensation network is coupled to the VCO to provide an audio output having a linear output level vs. control voltage curve. By appropriately matching the two linear curves the variation in modulation level over the frequency band of interest is substantially reduced.
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patent: 4378534 (1983-03-01), Goedken et al.
IBM Technical Disclosure Bulletin, "FM Angle Modulator with Frequency Compensated Deviation", by D. R. Irvin, vol. 21, No. 6, Nov. 1978, pp. 2482-2483.
Popek Marc H.
Rice Craig W.
Downey Joseph T.
Gillman James W.
Grimm Siegfried H.
Motorola Inc.
Roney Edward M.
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