The MBDA-30-451HP from Mini-Circuits is a bi-directional coupler that operates from 225 to 450 MHz. This coupler has a coupling value of 30 dB, directivity of 28 dB, insertion loss of 0.15 dB and a return loss of 30 dB. It can handle up to 200 watts of power. This coupler is fabricated using laminated PCB process (1.0 x 1.0 x 0.051”) and includes wrap-around terminations for good solderability and easy visual inspection. It supports a wide variety of applications from power amplifiers and antenna feeds to military applications.