The CP20218A-20 from Amtery is a Bi-Directional Coupler with Frequency 2 to 18 GHz, Coupling 19.3 to 20.7 dB, Average Power 20 W, Insertion Loss 0.5 to 0.8 dB, Directivity 17 to 23 dB. Tags: Module with Connectors. More details for CP20218A-20 can be seen below.