The RI1316CS-173223 from ZTS Technologies is a RF & Microwave Isolator with Frequency 17.3 to 22.3 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for RI1316CS-173223 can be seen below.