The UIYDCP4315B30 from UIY Inc. is a Directional Coupler with Frequency 8 to 18 GHz, Coupling 30 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1.0 dB, Directivity 10 dB. Tags: Module with Connectors. More details for UIYDCP4315B30 can be seen below.