Quantic PMI Model PS-90-6012-HS15NS-OPT6D1G is a high speed 6.1 GHz, 0 to 180°, Miniature Bi-Phase Modulator / Phase Shifter with TTL control logic. (ECL logic is available).  Specifications includes an insertion loss of 2.5 dB typical, 3.0 dB maximum; phase accuracy of ±0.05°; VSWR 2.0:1; operating input power of 20 dBm; and 15 ns switching speed.  Package size is 1.0” x 1.0” x 0.5” with SMA female connectors. https://www.quanticpmi.com/product-details/ps-90-6012-hs15ns-opt6d1g