The ZCDC13-K26344+ from Mini Circuits is a Directional Coupler with Frequency 26.5 to 40 GHz, Coupling 13 dB, Coupling Variation ±1 dB, Directivity 11 to 21 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZCDC13-K26344+ can be seen below.