Wide-band frequency-controlled crystal oscillator

Details Wide-band frequency-controlled crystal oscillator Wide-band frequency-controlled crystal oscillator

1976-11-03

1977-12-13

Grimm, Siegfried H.

Oscillators

Electromechanical resonator

Crystal

331116R, 331177V, H03B 532

Patent

active

040631940

ABSTRACT:
An oscillator formed of an amplifier with a feedback loop containing two parallel connected crystals in series with a voltage variable capacitance. The two crystals have respective resonance frequencies above and below the limits of a wide band over which the oscillator frequency can be varied by a control voltage. Frequency versus control voltage linearity is improved by inductances inserted in parallel and in series, respectively, with the lower and higher frequency crystals.

REFERENCES:
patent: 3358244 (1967-12-01), Ho et al.
patent: 3581240 (1971-05-01), Enderby

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