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Low phase noise oscillator using two parallel connected amplifiersA high frequency oscillator is provided by connecting two amplifier circuits in parallel where each amplifier circuit provides the other amplifier circuit with the conditions necessary for oscillation. The inherent noise present in both amplifier circuits causes the quiescent current, and in turn, the generated frequency, to change. The changes in quiescent current cause the transconductance and the load impedance of each amplifier circuit to vary, and this in turn results in opposing changes in the input susceptance of each amplifier circuit. Because the changes in input susceptance oppose each other, the changes in quiescent current also oppose each other. The net result is that frequency stability is enhanced.
Document ID
19870011799
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Kleinberg, Leonard L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
April 21, 1987
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-862959
Patent Number: US-PATENT-4,660,000
Patent Number: NASA-CASE-GSC-13018-1
Accession Number
87N21232
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,660,000|NASA-CASE-GSC-13018-1
Patent Application
US-PATENT-APPL-SN-862959

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