Title :
Spatial power combining of Gunn diodes using an overmoded waveguide resonator at millimeter wavelengths
Author :
Jongsuck Bae ; Uno, T. ; Fujii, T. ; Mizuno, K.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
An oscillator which incorporates an overmoded-waveguide resonator with an array of TE/sub 10/-mode waveguides containing Gunn diodes, has been developed as a means for achieving highly efficient spatial power combing. This oscillator makes use of mode conversion of radiation power from the Gunn diodes in the waveguide array to the overmoded-waveguide resonator, to produce high power at millimeter wavelengths. An efficiency of about 83% and an output power of 1.5 W (CW) at 61.4 GHz, has been achieved with a 3/spl times/3 waveguide Gunn diode array.
Keywords :
Gunn oscillators; arrays; equivalent circuits; millimetre wave oscillators; power combiners; resonators; 1.5 W; 61.4 GHz; 83 percent; EHF; Gunn diode array; Gunn diode oscillator; TE/sub 10/-mode waveguides; high power MM-wave source; millimeter wavelengths; mode conversion; overmoded waveguide resonator; spatial power combining; waveguide array; Couplers; Diffraction; Diodes; Equivalent circuits; Gunn devices; Millimeter wave communication; Oscillators; Power combiners; Power generation; Tellurium;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700859
