The XMC0204E2-03G from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 2.3 to 4 GHz, Average Power 135 to 175 W, Insertion Loss 0.2 to 0.25 dB, Isolation 20 to 23 dB, Coupling 3 dB. Tags: Surface Mount. More details for XMC0204E2-03G can be seen below.