Method of compensating an oscillation frequency and PLL

Details Method of compensating an oscillation frequency and PLL Method of compensating an oscillation frequency and PLL

2010-01-25

2011-12-06

Pascal, Robert (Department: 2817)

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

C331S17700V, C331S186000

Reexamination Certificate

active

08072282

ABSTRACT:
A method for compensating an oscillation frequency, a device, and a phase locked loop (PLL) is applied in the LC oscillating loop, including: sending voltage control signals to one end of a variable capacitor of an LC oscillating loop to generate oscillating signals in the LC oscillating loop through the voltage control signals; obtaining variable bias voltage that reflects changes of external parameters; and sending the variable bias voltage to the other end of the variable capacitor to compensate changes to the oscillation frequency of oscillation signals generated in the LC oscillating loop. This invention compensates the changes to the oscillation frequency of the circuit that contains the LC oscillating loop and improves the stability of the circuit oscillation frequency by sending bias voltage to one end of the variable capacitor of the LC oscillating loop.

REFERENCES:
patent: 7164325 (2007-01-01), Aparin et al.
patent: 7391274 (2008-06-01), Hsu
patent: 1031895 (1989-03-01), None
patent: 1722608 (2006-01-01), None
patent: 2008211763 (2008-09-01), None
First Office Action in Chinese Application No. 200910008298.X, mailed Jun. 24, 2010.

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