Solid resonator based oscillator having a phase control circuit

Details Solid resonator based oscillator having a phase control circuit Solid resonator based oscillator having a phase control circuit

1996-07-25

1998-06-16

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Transistorized controls

331 25, 331 34, 331116R, 331117R, H03B 536, H03L 7099

Patent

active

057677450

ABSTRACT:
An oscillator circuit having a phase control circuit performing phase control on the oscillation signal based on a signal representing a phase difference between a signal input from outside and the oscillation output so that the oscillation frequency follows the frequency variation of the signal input from outside. The phase control circuit includes a phase shifting circuit for forming the oscillation signal into first and second signals having a phase, difference of approximately 45.degree.. The phase control circuit subtracts the second signal from the first signal vectorially to form a third signal, and also inverts the second signal to form a fourth signal. Depending on the level of the phase difference signal, the phase control circuit outputs a composite signal of either the second and third or the third and fourth signals.

REFERENCES:
patent: 4128817 (1978-12-01), Gomi

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