The IPP-3216 from Innovative Power Products is a dual directional coupler that operates from 0.7 to 6 GHz. It has a coupling value of 40 dB, an insertion loss of less than 0.4 dB, directivity of over 17 dB and a VSWR of 1.30:1. The coupler can handle up to 250 W of average power and is available in a module that measures 1.5 x 1.5 inches with SMA/N-type female connectors.