The QCN-12D+ from Mini Circuits is a 90 Degree Hybrid Coupler with Frequency 800 to 1375 MHz, Average Power 15 W, Insertion Loss 0.4 to 1 dB, Isolation 14 to 19 dB, Amplitude Balance 0.4 to 1 dB. Tags: Ceramic. More details for QCN-12D+ can be seen below.