Title :
Optically controlled microwave switching and phase shifting using GaAs FET´s
Author :
Rossek, S.J. ; Free, C.E.
Author_Institution :
Sch. of Electron. Eng., Middlesex Univ., London, UK
fDate :
3/1/1995 12:00:00 AM
Abstract :
Theoretical and experimental results relating to a novel method for achieving direct optical control of a microwave phase shifter are presented, based upon a microwave reflective switch in which on- and off-states are controlled by direct optical illumination of a GaAs FET. Results, hitherto unavailable in the literature, verify previously published models for the GaAs FET as a microwave switch while under electrical control and establish the use of this model to predict the response of the switch under direct optical control over the frequency range 8 to 12 GHz
Keywords :
III-V semiconductors; MMIC phase shifters; field effect transistor switches; gallium arsenide; semiconductor switches; 8 to 12 GHz; GaAs; GaAs FET; direct optical control; direct optical illumination; microwave phase shifter; microwave reflective switch; optically controlled microwave switching; phase shifting; Communication switching; Gallium arsenide; Microwave FETs; Microwave circuits; Microwave theory and techniques; Optical control; Optical switches; Phase shifters; Phased arrays; Switching circuits;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
