The CE13-0220T from Marki Microwave is a Directional Coupler with Frequency 2 to 20 GHz, Coupling 12.5 to 13.5 dB, Coupling Variation ±0.5 to ±1 dB, Amplitude Flatness ±0.15 to ±0.40 dB, Directivity 19 to 30 dB. Tags: Module with Connectors. More details for CE13-0220T can be seen below.