Title :
A 44-60 GHz monolithic pHEMT grid amplifier
Author :
De Lisio, M.P. ; Duncan, S.W. ; Der-Wei Tu ; Weinreb, S. ; Cheh-Ming Lju ; Rutledge, D.B.
Author_Institution :
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Abstract :
We present a 36-element monolithic millimeter-wave grid amplifier. The grid operates in the U-band, using pseudomorphic High Electron Mobility Transistors (pHEMTs) as the active devices. The grid has a peak gain of 6.5 dB at 44 GHz. The grid can be tuned to operate from 44 GHz to 60 GHz by changing the positions of external polarizers and tuning slabs. At 60 GHz, the grid has a peak gain of 2.5 dB. Gain and tuning curves are consistent with theoretical predictions.
Keywords :
HEMT circuits; millimetre wave amplifiers; 2.5 dB; 44 to 60 GHz; U-band; active devices; external polarizer; gain; millimeter-wave amplifier; monolithic pHEMT grid amplifier; pseudomorphic high electron mobility transistors; quasi-optical device; tuning slab; Gain; Laboratories; Millimeter wave transistors; Optical amplifiers; PHEMTs; Polarization; Radiofrequency amplifiers; Resistors; Structural beams; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.511228
