The DCZ-03E/Y from Elmika is a Waveguide Coupler with Frequency 75 to 110 GHz, Coupling 3 dB, 6 dB, 10 dB, 15 dB, 20 dB, Directivity 30 to 35 dB, Insertion Loss 1.5 dB. Tags: Directional Coupler, Dual Directional Coupler. More details for DCZ-03E/Y can be seen below.