A compact broadband, six-bit MMIC phasor with integrated digital drivers

Digital and microwave technologies have been successfully combined on a single chip to realize a broadband, 6-b monolithic microwave integrated circuit (MMIC) phase shifter. It exhibits low insertion loss, a good voltage standing wave ratio (VSWR), and exceptional phase performance with less than 3 degrees RMS phase error for all 64 phase states over the entire 7.2-10.2-GHz band. Compared to previous designs, the number of required control lines has been reduced by a factor of two to the integration of the digital driver circuitry.<
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