The EDC21-24+ from Mini Circuits is a Directional Coupler with Frequency 4 to 20 GHz, Coupling 17.5 to 25.8 dB, Directivity 9.1 to 21 dB, Average Power 0.8 to 1.77 W, Insertion Loss 0.4 to 2.0 dB. Tags: Surface mount. More details for EDC21-24+ can be seen below.