An X/Ku Dual-Band GaAs MMIC Power Amplifier with Integrated Load Impedance Sensing

In this work, an X/Ku dual-band MMIC power amplifier (PA) with impedance sensing integrated into its output matching network (OMN) is demonstrated in a 150-nm GaAs process. Using the sampled-OMN technique, an extension of the sampled-line multi-port reflectometer, samplers are inserted into the PA OMN and impedance measurement is performed using offline computation of the sampler outputs. Measurement of loads with reflection coefficient magnitudes up to 0.6 and 0.45 is demonstrated at 9 and 16.1 GHz, respectively.