Bias current calibration of voltage controlled oscillator

Details Bias current calibration of voltage controlled oscillator Bias current calibration of voltage controlled oscillator

1997-11-14

1999-05-25

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

331 34, 331 44, 331177R, H03L 7099

Patent

active

059072636

ABSTRACT:
A voltage controlled oscillator with bias current calibration includes a voltage controlled oscillator 1504. A tuning current source 1510 is coupled to oscillator 1504 in parallel with bias current source 1512 for providing a tuning current to oscillator 1504. A selected control voltage is provided by oscillator 1504 for setting an oscillator output frequency. Control circuitry 1513, 1514 allows adjusting of the tuning current source to optimize bias current.

REFERENCES:
patent: 5382922 (1995-01-01), Gersbach et al.

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