Title :
High efficiency MMIC frequency triplers for millimeter and submillimeter wavelengths
Author :
Erickson, N.R. ; Smith, R.P. ; Martin, S.C. ; Nakamura, B. ; Mehdi, I.
Author_Institution :
Dept. of Phys. & Astron., Massachusetts Univ., Amherst, MA, USA
Abstract :
A complete wideband tripler circuit with optimized input, idler and output matching has been integrated onto GaAs. The circuit consists of a matched pair of antiparallel varactor diodes with provision for DC bias. The input impedance is near 50 /spl Omega/ in microstrip, while the output couples directly to reduced height waveguide. Circuits have been fabricated and tested for frequencies near 300 GHz. These triplers achieve a peak efficiency of 11% with a power output of 5-7 mW. While peak efficiency occurs over a narrow band, the efficiency exceeds 1% over a band of 230-325 GHz.
Keywords :
III-V semiconductors; MMIC frequency convertors; gallium arsenide; millimetre wave frequency convertors; submillimetre wave integrated circuits; varactors; 11 percent; 230 to 325 GHz; 5 to 7 mW; 50 ohm; DC bias; GaAs; MMIC frequency triplers; antiparallel varactor diodes; matched pair; millimeter wavelengths; output matching; peak efficiency; reduced height waveguide; submillimeter wavelengths; wideband tripler circuit; Circuit testing; Coupling circuits; Diodes; Frequency; Gallium arsenide; Impedance matching; MMICs; Microstrip; Varactors; Wideband;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.863526
