Microwave oscillator with improved phase noise characteristic

Details Microwave oscillator with improved phase noise characteristic Microwave oscillator with improved phase noise characteristic

1995-02-06

1995-10-31

Grimm, Siegfried H.

Oscillators

With distributed parameter resonator

331107DP, 331107SL, 331117D, H03B 518

Patent

active

054633605

ABSTRACT:
A microwave oscillator has a cavity which is excited with an active element. The phase noise characteristic of the oscillator is improved in that a frequency discriminator utilizes the same oscillator cavity. The waves transmitted and reflected by the cavity are measured, combined and detected by a pair of low noise diodes. The signals obtained are compared to produce a control signal for a phase shifter which is connected between the active element and the cavity. The cavity is preferably a dielectric resonator.

REFERENCES:
patent: 5032800 (1991-07-01), Galani et al.
patent: 5036299 (1991-07-01), Dick et al.
patent: 5150080 (1992-09-01), Bianchini et al.

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