Quantic PMI Model P1T-1G18G-65-T-SFF is an Absorptive, High Speed, Single Pole Single Throw Switch capable of switching within 50 ns maximum over the frequency range of 1 to 18 GHz with a 65 dB isolation. Package size is 1.0" x 1.0" x 0.5" with SMA female connectors.   https://www.quanticpmi.com/product-details/p1t-1g18g-65-t-sff-