Quantic PMI Model PS-30M2G-8B-SFF is a 0.03 to 2 GHz digitally controlled analog phase shifter with capability for phase shifting from 0° to 360°. The unit consists of an analog phase shifter and a digital-to-analog converter. Nine logic input lines allow 256 discrete values of phase providing an LSB of 1.40625°.  Other specifications include ±1.0 dB typical amplitude error; phase shift error of ±10º typical; and switching speed 500 ns.  Unit size is 3.25" x 3.25" x 0.84" and has removable SMA female connectors. https://www.quanticpmi.com/product-details/ps-30m2g-8b-sff