Title :
60 GHz sources using optically driven HBTs
Author :
Scott, D.C. ; Plant, D.V. ; Fetterman, H.R.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Millimeter-wave sources at 60 GHz have been demonstrated using optically driven heterojunction bipolar transistors (HBTs) configured as photodetectors. Two techniques were used to optically generate the millimeter waves: the mixing of two continuous wave lasers and the mode locking of a semiconductor laser. The millimeter-wave power generated from these two configurations was radiated into free-space using integrated planar twin dipole antennas and heterodyne detected with signal to noise ratios>40 dB. As part of these experiments, the DC optical gain and quantum efficiency of the HBT photodetectors were determined.<>
Keywords :
dipole antennas; heterojunction bipolar transistors; laser beam applications; laser mode locking; phototransistors; semiconductor lasers; solid-state microwave devices; 60 GHz; DC optical gain; continuous wave lasers; heterojunction bipolar transistors; integrated planar twin dipole antennas; millimeter waves; mode locking; optically driven HBTs; photodetectors; quantum efficiency; semiconductor laser; signal to noise ratios; Heterojunction bipolar transistors; Laser mode locking; Laser noise; Millimeter wave technology; Millimeter wave transistors; Optical mixing; Optical noise; Photodetectors; Power generation; Semiconductor lasers;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188111
