The RFHB02G18G-4 from RF-Lambda is a 90 Degree Hybrid Coupler with Frequency 2 to 18 GHz, Average Power 30 W, Peak Power 300 W, Insertion Loss 3 to 4.5 dB, Isolation 15 to 20 dB. Tags: Module with Connectors. More details for RFHB02G18G-4 can be seen below.