The PRF-DI16018-20 from Premier RF is a Directional Coupler with Frequency 6 to 18 GHz, Coupling 20 ± 1.25 dB, Coupling Variation ± 1.25 dB, Directivity 15 dB Min, Power 50 Watts. Tags: Module with Connectors. More details for PRF-DI16018-20 can be seen below.