The CE20-0240 from Marki Microwave is a Directional Coupler with Frequency 2 to 40 GHz, Coupling 19.5 to 20.5 dB, Coupling Variation ±0.5 to ±1 dB, Amplitude Flatness ±0.1 to ±0.25 dB, Directivity 19 to 33 dB. Tags: Module with Connectors. More details for CE20-0240 can be seen below.