Phase triggerable oscillator with temperature compensation

Details Phase triggerable oscillator with temperature compensation Phase triggerable oscillator with temperature compensation

1988-04-27

1989-07-25

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331135, 331173, 331176, H03B 504, H03L 102

Patent

active

048517895

ABSTRACT:
A voltage controlled oscillator with temperature compensation and reduced trigger jitter. The temperature compensation is improved by applying an on-chip generated temperature-dependent control voltage to first and second parallel oscillator stages through which the oscillation signal passes. The second stage has a greater signal propagation delay than the first stage. The control voltage determines the signal delay contributed by each stage to the oscillating signal, decreasing the delay in response to a temperature-induced decrease in oscillator frequency and increasing the delay in response to a temperature-induced increase in frequency. The oscillator also includes means for generating oscillations from a predetermined signal phase that is independent of the oscillator phase before triggering.

REFERENCES:
patent: 3889205 (1975-06-01), Mitchell
patent: 4468637 (1984-08-01), Wray et al.
patent: 4562412 (1985-12-01), Sugawara et al.

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