Low noise cryogenic dielectric resonator oscillator

Details Low noise cryogenic dielectric resonator oscillator Low noise cryogenic dielectric resonator oscillator

1987-11-05

1988-07-12

LaRoche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Molecular resonance stabilization

331 941, 331162, H03L 726

Patent

active

047572787

ABSTRACT:
A microwave oscillator is provided which can operate at a temperature of many degrees above absolute zero while providing very low phase noise that has heretofore generally required temperatures within a few degrees K. The oscillator includes a ring-shaped resonator element of ruby (sapphire plus chromium) or iron sapphire crystal, lying adjacent to a resonator element of sapphire, so the regenerator element lies directly in the magnetic field of the resonator element. The resonator element is substantially devoid of contact with electrically conductive material. Microwave energy of a pump frequency (e.g. 31GHz) is applied to the regenerator element, while signal energy (e.g. 10GHz) is outputted from the resonator element.

REFERENCES:
patent: 4242611 (1980-12-01), Douglass
patent: 4488124 (1984-12-01), Yoshimura
patent: 4495478 (1985-01-01), Kwon et al.

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