Frequency modulated oscillator

Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal

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Details

331114, 331177V, 332 18, H03C 320

Patent

active

040030040

ABSTRACT:
A frequency modulated push-pull oscillator in which the non-linear characteristic of varactors producing frequency modulation is compensated for by an opposite non-linear characteristic of a field effect transistor (FET) providing modulating bias to the varactors.

REFERENCES:
patent: 2549923 (1951-04-01), O'Brien
patent: 3020493 (1962-02-01), Carroll
patent: 3440544 (1969-04-01), Pampel
patent: 3628152 (1971-12-01), Carlson
patent: 3795870 (1974-03-01), Sanders
patent: 3845403 (1974-10-01), Heckman, Jr.

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