The CD10-0114 from Marki Microwave is a broadband, dual directional coupler that operates from 0.8 GHz to 14.7 GHz. This model has a coupling value of 10 dB (coupling can be customized), insertion loss up to 3 dB, a low VSWR under 1.34:1 and high directivity of 23 dB. The multisection tri-plate stripline design exhibits excellent coupling flatness and VSWR at all ports. High directivity allows them to be used for scalar network and return loss/VSWR measurements. The coupler is available in a module with SMA connectors.