Title :
Spatial power combining of Gunn diodes using an overmoded-waveguide resonator at millimeter wavelengths
Author :
Bae, Jongsuck ; Unou, Takanori ; Fujii, Tetsu ; Mizuno, Koji
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
12/1/1998 12:00:00 AM
Abstract :
A millimeter-wave oscillator which incorporates an overmoded-waveguide resonator with an array of TE10-mode waveguides containing Gunn diodes, has been developed as a means for achieving highly efficient spatial power combining. This oscillator makes use of mode conversion of radiation power from 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 (continuous wave) at 61.4 GHz, has been achieved with a 3×3 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 diodes; MM-wave oscillator; TE10-mode waveguides; high power production; millimeter wavelengths; mode conversion; overmoded-waveguide resonator; spatial power combining; waveguide Gunn diode array; waveguide array; Couplers; Diffraction; Diodes; Gunn devices; Microwave antenna arrays; Millimeter wave communication; Oscillators; Power combiners; Waveguide theory; Wavelength conversion;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
