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Low noise cryogenic dielectric resonator oscillatorA 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 resonant element of ruby (sapphire plus chromium) or iron sapphire crystal, lying adjacent to a resonator element of sapphire, so that 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., 31 GHz) is outputted from the regenerator element, while signal energy (e.g., 10 GHz) is outputted from the resonator element.
Document ID
19880017212
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Dick, G. John (Jet Propulsion Lab., California Inst. of Tech. Pasadena., United States)
Date Acquired
August 13, 2013
Publication Date
July 12, 1988
Subject Category
Electronics And Electrical Engineering
Accession Number
88N26596
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-NPO-17157-1-CU|US-PATENT-4,757,278
Patent Application
US-PATENT-APPL-SN-116810

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