The IPP-3032 from Innovative Power Products is a Dual Directional Coupler that operates from 1 to 3 GHz. It has a coupling factor of 50 dB (0.5 dB of flatness) with directivity of more than 20 dB and an insertion loss of 0.15 dB. The coupler can handle up to 1000 W of power and has a VSWR of 1.25:1. It is available in a module that measures 3.50 x 3.50 Inches and has SC-Female / SMA-Female connectors.