The ZCDC20-K0244+ from Mini Circuits is a Directional Coupler with Frequency 2 to 40 GHz, Coupling 20 dB, Coupling Variation ±1.8 dB, Directivity 10 to 33 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZCDC20-K0244+ can be seen below.