Wideband voltage controlled oscillator having open loop gain com

Details Wideband voltage controlled oscillator having open loop gain com Wideband voltage controlled oscillator having open loop gain com

1991-11-01

1992-09-01

Pascal, Robert J.

Oscillators

Solid state active element oscillator

Transistors

331175, H03B 500

Patent

active

051442647

ABSTRACT:
A voltage control oscillator (400) includes a tank circuit (402) wihch includes a control input (118). The VCO (400) further includes a feedback section (106) which includes a transistor (108). The feedback circuit (106) further includes a feedback compensation circuit 420 which compensates the feedback ratio of the feedback circuit (106) over changes in frequency of operation in order to provide for a substantially constant open loop gain. The improved VCO (400) provides for fairly constant current drain over changes in frequency as well as lower power output variations and flatter Side Band Noise Ratio response over frequency.

REFERENCES:
patent: 4066983 (1978-01-01), Gallani et al.
patent: 4074209 (1978-02-01), Lysobey
patent: 4510465 (1985-04-01), Rice et al.
patent: 4591809 (1986-05-01), Regan et al.
patent: 4621241 (1986-11-01), Kiser
patent: 4968952 (1990-11-01), Kehler, Jr.
patent: 5075643 (1991-12-01), Einbinder

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