The C-1040-10 from ET Industries is a Directional Coupler that operates from 10 to 40 GHz. This 10 dB coupler has an insertion loss of under 1.6 dB and a directivity of up to 12 dB. It can handle an average input power of up to 20 watts and a peak power of 3 kW. The C-1040-10 is available in a module with K-type female connectors.