Title :
Quasioptical power combining at millimetre waves
Author :
Sarin, S.S. ; Prasad, C.D. ; Singh, D.
Author_Institution :
Defence Electron. Applications Lab., Dehradun, India
fDate :
8/1/2000 12:00:00 AM
Abstract :
The quasioptical technique is used to combine CW Gunn sources at millimetre-wave frequencies using a Fabry Perot resonator. This resonator consists of two symmetrical highly polished reflectors with dielectric launchers to couple maximum energy from the sources. Experiments were carried out using two, three and four GaAs Gunn oscillators, at 94 GHz, to prove the power combining concept. Combining efficiency of about 50, 55 and 60%, respectively, with half-power bandwidth (HPBW) of 50 kHz has been achieved
Keywords :
Fabry-Perot resonators; Gunn oscillators; millimetre wave oscillators; power combiners; 50 kHz; 50 percent; 55 percent; 60 percent; 94 GHz; CW Gunn sources; Fabry Perot resonator; GaAs; Gunn oscillators; III V semiconductor; SHF; dielectric launchers; experiments; half-power bandwidth; maximum energy coupling; millimetre waves; millimetre-wave frequencies; power combining efficiency; quasioptical power combining; symmetrical polished reflectors;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20000571
