Voltage controlled oscillator (VCO) CMOS circuit

Details Voltage controlled oscillator (VCO) CMOS circuit Voltage controlled oscillator (VCO) CMOS circuit

1998-03-10

1999-09-28

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331177R, 331115, 331132, 333217, H03B 512, H03B 702

Patent

active

059595043

ABSTRACT:
A voltage controlled oscillator (VCO) CMOS circuit wherein back gate terminals of CMOS transistors are used to vary the parasitic capacitances of the transistors. The back gate terminals receive a signal from a variable voltage source so that oscillation can be controlled by adjusting the variable voltage. The CMOS transistors are connected across an inductor and the transconductance characteristics of the transistors reduce the resistance of the inductor, thereby improving circuit oscillation and providing enhanced stability and capabilities at high operating frequencies.

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