The EDC14-553-DG+ from Mini Circuits is a Directional Coupler with Frequency 22 to 55 GHz, Coupling 12.7 to 14.4 dB, Coupling Variation ±1.0 dB, Directivity 7 to 11 dB, Average Power 0.79 to 1.58 W. Tags: Surface Mount. More details for EDC14-553-DG+ can be seen below.