Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1983-11-21
1985-11-26
LaRoche, Eugene
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331107R, 331 96, H03B 522
Patent
active
045556784
ABSTRACT:
An improvement in a microwave oscillator using a GaAs FET as the active element is shown to include a phase detector responsive to a portion of the positive feedback signals applied to a resonator having a high Q and to a portion of the signals out of the GaAs FET, shifted by 90.degree., to obtain signals to degenerate noise internally formed in the GaAs FET.
REFERENCES:
patent: 4484156 (1984-11-01), Khanna et al.
Article by O. Ishihara, T. Mori, H. Sawano and M. Nakatani entitled "A Highly Stabilized GaAs FET Oscillator Using a Dielectric Resonator Feedback Circuit in 9-14 GHz," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-28, No. 8, Aug. 1980, pp. 817-824.
Article by B. T. Debney and J. S. Joshi entitled "A Theory of Noise in GaAs FET Microwave Oscillators and Its Experimental Verification," IEEE Transactions on Electron Devices, vol. ED-30, No. 7, Jul. 1983, pp. 769-776.
DiBiase Robert
Galani Zvi
Laton Richard W.
Waterman, Jr. Raymond C.
LaRoche Eugene
McFarland Philip J.
Pannone Joseph D.
Raytheon Company
Wan G.
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