The ZCDC20-02263S+ from Mini Circuits is a Directional Coupler with Frequency 2 to 26.5 GHz, Coupling 20 dB, Coupling Variation ±1.1 dB, Directivity 14 to 25 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZCDC20-02263S+ can be seen below.