Abstract

The optical control of an MMIC (monolithic microwave integrated circuit) switch by a MESFET photodetector is presented along with a novel model of the illuminated MESFET, which serves as a tool to optimize the switch's performance. The wavelength dependence of the response is emphasized, since it influences the relative contribution of the photovoltaic and photoconductive effects. A theoretical analysis accurately predicting the photocurrents in MESFETs operated in the pinched-off mode is presented. The analysis includes photovoltaic and photoconductive effects. >

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