The QCS-312+ from Mini Circuits is a 90 Degree Hybrid Coupler with Frequency 1700 to 3100 MHz, Average Power 15 W, Insertion Loss 0.4 to 0.8 dB, Isolation 17 to 25 dB, Amplitude Balance 0.2 to 1.2 dB. Tags: Ceramic. More details for QCS-312+ can be seen below.