Title :
Direct frequency modulation with CW Gunn and IMPATT oscillators
Author :
Bestwick, P.R. ; Drinan, P.S. ; Hobson, Geoffrey S. ; Robson, Peter N. ; Thomas, M. ; Tozer, R.
Abstract :
Demodulation of frequency-modulated signals has been carried out with frequency-locked CW Gunn and IMPATT oscillators. The process utilized the coupling between the bias current or voltage, respectively and the frequency deviation of the locked oscillator. A full characterization of this coupling is presented. An incremental model of the large-signal oscillator behavior is developed and shown to be in good agreement with the linear and nonlinear behavior of the demodulator.
Keywords :
Demodulators; Frequency modulation; Gunn oscillators; IMPATT devices; Microwave oscillators; Solid-state microwave circuits; demodulators; frequency modulation; microwave oscillators; solid-state microwave circuits; Bandwidth; Circuits; Coaxial components; Demodulation; Frequency modulation; Gunn devices; Monitoring; Q factor; Semiconductor diodes; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1973.1050342
