Controlled feedback path voltage controlled oscillator

Details Controlled feedback path voltage controlled oscillator Controlled feedback path voltage controlled oscillator

1986-10-14

1988-03-22

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331117R, 331177R, H03B 512, H03B 536

Patent

active

047332000

ABSTRACT:
A voltage controlled oscillator having a first feedback path and a second feedback path. The first feedback path may include a phase shift unit (13) as necessary to compensate for an inherent phase shift provided by the resonant circuit (11) used therewith. The second feedback path includes a steering network (17) that responds to an external control signal to cause the output signal to be selectively in either of two phase relations with respect to the incoming signal. The control signal can also control the magnitude of the output signal. By control of the phase relationship and the magnitude, the steering network (17) can effectively control the output frequency of the resonant circuit (11).

REFERENCES:
patent: 4055817 (1977-10-01), Watanabe et al.
patent: 4286235 (1981-08-01), Wilber et al.
patent: 4595887 (1986-06-01), Miura
patent: 4600899 (1986-07-01), Kennedy

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