Optically controlled microwave phase shifting and sampling by efficient photoconductive switching on LT-GaAs substrate integrated technology

摘要

Microwave photonics contributes through ultrafast devices to the processing of high data rates. In this area, microwave photoconductive switches (MPCSs) in integrated technology have proved their performances to control the transmission of high frequency signals in complex systems. Their ability to switch microwave signal phase and magnitude is fully defined by a complex frequency-dependant ON/OFF ratio RON/OFF determined from S-Parameters measurements in microwave frequency domain. This paper reports on a new design of MPCSs to be used, after realization and evaluation, as a basic block in optically controlled MMIC devices for application in high frequency samplers or phase shifters.