Method and apparatus for reducing microwave oscillator output no

Details Method and apparatus for reducing microwave oscillator output no Method and apparatus for reducing microwave oscillator output no

1990-06-22

1991-07-30

Pascal, Robert J.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

331135, H03L 700

Patent

active

050362992

ABSTRACT:
Microwave oscilltors incorporate r.f. feedback with carrier suppression to reduce phase noise. In a direct feedback oscillator arrngement a circulator is interposed between the r.f. amplifier and the high-Q resonator. The amplifier output is applied to the slightly over-coupled input port of the resonator so that the resultant net return signal is the vectorial difference between the signals emitted and reflected from the resonator. The gain of the r.f. amplifier is chosen to regenerate the forward signal from the net return signal. In a STALO-type arrangement, the resonator is critically coupled and an r.f. amplifier added to the path of the net return signal. The sensitivity of the STALO-type feedback loop is thereby enhanced while added amplifier noise is minimized by the superposition of the signals emitted by and reflected from the resonator.

REFERENCES:
patent: 3577099 (1971-05-01), Hall et al.
patent: 3614649 (1971-10-01), Gerig
patent: 4916412 (1990-04-01), Nordholt et al.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing microwave oscillator output no does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing microwave oscillator output no, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing microwave oscillator output no will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1544824