The ECP118010 from Eclipse MDI is an Ultra-Broadband 10 dB Directional Coupler that operates from 1 to 18 GHz. It has a directivity of over 14 dB, an insertion loss of 1.5 dB, and frequency sensitivity of +/-0.45 dB. This coupler can handle up to 20 watts of CW power and peak power of 3kW. The ECP118010 is MIL-E-5400 and MIL-E-16400 qualified and is available in two different compact packages with SMA female connectors.