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Featured researches published by Francis W. Hopwood.


Archive | 1976

PHASE LOCK LOOP FOR A VOLTAGE CONTROLLED OSCILLATOR

Francis W. Hopwood; Lester K. Staley


Archive | 1998

Transmit/receive module for planar active apertures

Thomas R. Turlington; Patrick G. Farrell; Gerald K. Kane; Gary L. Ferrell; Scott K. Suko; Joseph A. Faulkner; Gregory K. Sinon; Francis W. Hopwood; Andrew J. Piloto


Archive | 1989

Voltage-controlled oscillator with rapid tuning loop and method for tuning same

Stephen P. Caldwell; David S. Korn; Francis W. Hopwood


Archive | 1977

High speed phase lock control for frequency switching

Benjamin C. Alm; Francis W. Hopwood; R.A. Jelen; John P. Muhlbaier; Joseph F. Wright


Archive | 1985

Phased array radar antenna system

Francis W. Hopwood; Jerry A. Kane


Archive | 1990

Phased array antenna architecture and related method

Francis W. Hopwood; Peggy J. Sowell


Archive | 1977

Chirp phase distortion detector in a wideband linearization feedback control loop

Francis W. Hopwood; Lester K. Staley


Archive | 1998

Multi-mode radar exciter

Stephen P. Caldwell; Francis W. Hopwood; Thomas K. Lisle; Wayne Weigle


Archive | 1978

Sampling linearizer utilizing a phase shifter

James H. Mims; Francis W. Hopwood


Archive | 1979

Digitally controlled phase lock distillator system

Francis W. Hopwood; John P. Muhlbaier; Jeffrey T. Oakes; James T. Haynes

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