The CS20-16-436/14 from Pulsar Microwave is a Directional Coupler with Frequency 4 to 18 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Amplitude Flatness 0.5 dB, Directivity 12 to 15 dB. Tags: Module with Connectors. More details for CS20-16-436/14 can be seen below.