The QH8281 from Werlatone Inc is a 90 Degree Hybrid Coupler with Frequency 500 MHz to 3 GHz, Average Power 200 W, Insertion Loss 0.7 dB, Isolation 18 dB, Coupling 3 dB. Tags: Module with Connectors, Surface Mount, Drop In. More details for QH8281 can be seen below.