Title :
40 GHz quasi-optical second harmonic spatial power combiner using FETs and slots
Author :
Kawasaki, S. ; Itoh, T.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
FET oscillators integrated with slot radiators are used for constructing quasi-optical second-harmonic spatial power combiners. Double-oscillator power combiner circuits with a strongly coupled structure generated the 40-GHz second-harmonic frequencies. The radiation patterns of the double-oscillator power combiners are also discussed. Through the antenna patterns obtained one can also find information on the phase relationship between the oscillators. By controlling the phases on the slots, it was possible to obtain the Delta pattern for the 19-GHz fundamental and the Sigma pattern for the 40-GHz second harmonic.<>
Keywords :
antenna accessories; microwave oscillators; slot antennas; solid-state microwave circuits; 19 GHz; 40 GHz; Delta pattern; EHF; FET oscillators; MM-wave type; Sigma pattern; antenna patterns; double-oscillator power combiners; phase relationship; radiation patterns; second harmonic; slot radiators; spatial power combiner; strongly coupled structure; Coupling circuits; FETs; Feeds; Frequency; Impedance; Oscillators; Power combiners; Power generation; Power system harmonics; Slot antennas;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188309
