Title :
A Second Harmonic Oscillator Using an Overmoded Waveguide Resonator with Gunn Diodes
Author :
Bae, Jongsuck ; Ikeda, Mitsuhiro
Author_Institution :
Nagoya Inst. of Technol., Nagoya
Abstract :
An overmoded waveguide technique for efficient spatial power combining of solid state devices has been applied to Gunn diodes functioning in a second harmonic mode. Fifteen diodes contained in a 5times3 TE10-waveguide array has oscillated at a fundamental frequency and generated second harmonic waves in a single TE50-mode in the common overmoded-waveguide resonator. The overmoded-waveguide harmonic oscillator has produced 0.34 W output power with a combining efficiency of 38% at 94.8 GHz. This efficiency has been improved to 49% using a silicon output coupler.
Keywords :
Gunn diodes; cavity resonators; harmonic oscillators (circuits); millimetre wave oscillators; power combiners; Gunn diodes; TE10-waveguide array; frequency 94.8 GHz; overmoded waveguide resonator; power 0.34 W; second harmonic oscillator; solid state devices; spatial power combining; Cutoff frequency; Diodes; Gunn devices; Horn antennas; Oscillators; Power engineering and energy; Power generation; Power system harmonics; Rectangular waveguides; Solid state circuits; Gunn device oscillators; Harmonic generation; Millimeter wave oscillators; Power combiners;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380566
