The 2020-6618-20 from MACOM is a Directional Coupler with Frequency 4 to 8 GHz, Coupling 20 dB, Coupling Variation ±0.75 dB, Frequency Sensitivity ±0.50 dB, Directivity 20 dB. Tags: Module with Connectors. More details for 2020-6618-20 can be seen below.