The CP10020A-20 from Amtery is a Directional Coupler that operates from 0.5 to 20 GHz. It has a coupling of 20 dB, directivity of over 15 dB, and an insertion loss of less than 1.7 dB. This RoHS-compliant coupler can handle up to 20 watts of average power and is available in a module with SMA female connectors.