Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1985-03-29
1986-12-30
Grimm, Siegfried H.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
331 36C, 331117D, 331117V, 332 18, 332 19, 332 30V, H03C 308, H03C 309
Patent
active
046331972
ABSTRACT:
A modulatable oscillator for radio frequencies is disclosed in which the single resonant tank includes a tightly coupled varactor diode for wideband modulation and frequency control. Nonlinearities introduced by the varactor diode are compensated by predistortion of the modulated signal yielding a predetermined modulation characteristic which is maintained over temperature.
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Grimm Siegfried H.
Jenski Raymond A.
Motorola Inc.
Southard Donald B.
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