Voltage controlled oscillator with filtered and compensated modu

Details Voltage controlled oscillator with filtered and compensated modu Voltage controlled oscillator with filtered and compensated modu

1990-12-03

1991-12-24

Pascal, Robert J.

Modulators

Frequency modulator

Including discrete semiconductor device

332123, H03C 300

Patent

active

050756443

ABSTRACT:
Briefly, according to the invention, a voltage controlled oscillator 200 having a control input, an information signal input, and an output is disclosed. The voltage controlled oscillator 200 comprises a tank circuit 202 for generating a carrier signal and a modulator 206 for modulating the carrier signal in response to the information signal 210 at the information signal input of the voltage controlled oscillator 200. The voltage controlled oscillator 200 includes a filter 208 coupling the modulator 206 to the tank circuit 202 for rejecting out of band signals from altering the bias point of the modulator 206.

REFERENCES:
patent: 4189690 (1980-02-01), Bock et al.

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