Title :
Millimeter-wave, lumped-element, Gunn VCO´s with ultrawideband (20 GHz) tuning
Author :
Cohen, L.D. ; Sard, E.
Author_Institution :
AIL Syst. Inc., Melville, NY, USA
Abstract :
The development and performance of a state-of-the-art millimeter-wave ultrabroadband VCO (voltage-controlled oscillator) are described. The VCO is varactor tuned at fundamental frequency, and output is obtained from the in-situ-generated Gunn diode second harmonic. Inherently broadband tuning capability is provided by the use of a lumped-element circuit form, reactively terminating the varactor-tuned fundamental oscillation band, and the use of the second harmonic as output. The measured performance includes continuous tuning from 46 to 66 GHz and a 20-GHz tuning range, with a maximum power output of +6 dBm.<>
Keywords :
Gunn oscillators; tuning; varactors; variable-frequency oscillators; 46 to 66 GHz; EHF; Gunn VCO; Gunn diode second harmonic; MM-wave circuit; VFO; broadband tuning capability; lumped-element circuit; microwave oscillator; millimeter-wave; ultrabroadband VCO; varactor tuned; voltage-controlled oscillator; Circuit optimization; Diodes; Frequency; Gunn devices; Millimeter wave circuits; Power measurement; Tuning; Ultra wideband technology; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Microwave Symposium Digest, 1989., IEEE MTT-S International
Conference_Location :
Long Beach, CA, USA
DOI :
10.1109/MWSYM.1989.38962
