Measurement of phase and amplitude response of a GaAs MMIC by electrooptic sampling

A gain-switched injection laser was used to measure the amplitude and phase response of GaAs MMICs (monolithic microwave integrated circuits) and transmission lines by electrooptic sampling, up to 18 GHz. A phase referencing method that enables the phase response to be measured accurately has been devised, and the voltage gain and phase shift of a MMIC low-noise amplifier were measured over the 5-15 GHz range.<
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