Planar Monolithics (PMI) Model PS-100M20G-8B-SFF-MIL-SM is a 0.1 to 20 GHz digitally controlled phase shifter with capability for phase shifting from 0º to 360º with an insertion loss of 13 dB; amplitude error of ±1 dB; phase shift error ±5°; switching speed of 500 ns and spurious of -60 dBc.  The unit consists of an analog phase shifter and a digital-to-analog converter. Housing size is 3.25" x 3.25" x 0.84" and has SMA Female Connectors.   https://www.pmi-rf.com/product-details/ps-100m20g-8b-sff-mil-sm