Relaxation oscillator with propagation delay compensation...

Details Relaxation oscillator with propagation delay compensation... Relaxation oscillator with propagation delay compensation...

2003-06-03

2008-10-28

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S034000, C331S016000, C331S143000, C327S261000

Reexamination Certificate

active

07443254

ABSTRACT:
A tunable oscillator comprises a control supply configured to output a control output operable to tune the tunable oscillator. The tunable oscillator further comprises an oscillator circuit configured to output a signal such that a frequency of the signal increases with increasing control output. A control circuit is configured to control the frequency of the oscillator circuit signal in response to a comparison of the oscillator circuit signal with a reference signal. A propagation delay compensation circuit is configured to vary an amplitude of the reference signal at substantially the same frequency as the oscillator circuit signal to compensate for propagation delay of signals from the control circuit to the oscillator circuit.

REFERENCES:
patent: 5497127 (1996-03-01), Sauer
patent: 43 409 24 (1995-06-01), None
patent: 07038388 (1995-02-01), None
Shakiba M. H. et al., “Automatic Swing Control in Relaxation Oscillators,” IEEE Inc. New York, US, vol. 33, No. 12, Dec. 1998, pp. 1979-1986, (8 pages).

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