The BDCH-10-63 from Mini-Circuits is a bi-directional coupler that operates from 2 to 6 GHz. This coupler has a coupling value of 10 dB, directivity of 22 dB, insertion loss of 0.1 dB and a return loss of 25 dB. It can handle up to 100 watts of power. It is fabricated using a laminated PCB process (0.2 x 0.56 x 0.08 inches) and includes wrap-around terminations for good solderability and easy visual inspection. This bi-directional coupler is ideal for radar, base stations and power monitoring applications.