The CE13-0240 from Marki Microwave is a Directional Coupler with Frequency 2 to 40 GHz, Coupling 12.5 to 13.5 dB, Coupling Variation ±0.5 to ±1 dB, Amplitude Flatness ±0.15 to ±0.40 dB, Directivity 17 to 29 dB. Tags: Module with Connectors. More details for CE13-0240 can be seen below.