The CE16-0220T from Marki Microwave is a Directional Coupler with Frequency 2 to 20 GHz, Coupling 15.5 to 16.5 dB, Coupling Variation ±0.45 to ±0.9 dB, Amplitude Flatness ±0.1 to ±0.35 dB, Directivity 20 to 32 dB. Tags: Module with Connectors. More details for CE16-0220T can be seen below.