Low phase noise oscillator using two parallel connected amplifie

Details Low phase noise oscillator using two parallel connected amplifie Low phase noise oscillator using two parallel connected amplifie

1986-05-14

1987-04-21

Grimm, Siegfried H.

Oscillators

Plural oscillators

Parallel connected

331116R, 331117R, H03B 512, H03B 536

Patent

active

046600000

ABSTRACT:
A high frequency oscillator is provided by connecting two amplifier circuits in parallel where each amplifier circuit provides the other amplifier circuit with the conditions necessary for oscillation. The inherent noise present in both amplifier circuits causes the quiescent current, and in turn, the generated frequency, to change. The changes in quiescent current cause the transconductance and the load impedance of each amplifier circuit to vary, and this in turn results in opposing changes in the input susceptance of each amplifier circuit. Because the changes in input susceptance oppose each other, the changes in quiescent current also oppose each other. The net result is that frequency stability is enhanced.

REFERENCES:
patent: 2871354 (1959-01-01), Perlman
patent: 3806831 (1974-04-01), Kleinberg

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