The 12A7NA-40S from Renaissance Electronics Corporation is a Directional Coupler that operates from 5 to 6 GHz and support development of C-Band Radar Sub-Systems. It has a coupling factor of 40 dB, an insertion loss of 0.25 dB and a directivity of 25 dB. The coupler can handle up to 225 W of average and 1.5 kW of peak input power. It has a coupling variation of ± 0.75 dB and a VSWR of less than 1.25:1. This RoHS compliant coupler is available in a module that measures 1.9 x 0.89 x 0.50 inches and can accurately determine signal to noise and transmit power when used in a radar.