The D13N180400 from Fujian MIcable is a Directional Coupler with Frequency 18 to 40 GHz, Coupling 13 dB, Coupling Variation ±0.7 dB, Amplitude Flatness ±0.8 dB, Directivity 10 to 12 dB. Tags: Module with Connectors. More details for D13N180400 can be seen below.