The CS06-25-436/20 from Pulsar Microwave is a Directional Coupler that operates from 0.5 to 20 GHz. This 6 dB coupler has a directivity of more than 15 dB and has an insertion loss of less than 1.8 dB. The coupler can handle an average input power of up to 25 W and a reflected power of 10 W. It is available in a module that measures 4.40 x 0.70 x 0.40 inches and has SMA connectors.