The QMC-CRYOHCOUPLER-03NM from Quantum Microwave is a 90 Degree Hybrid Coupler with Frequency 5 to 10 GHz, Insertion Loss 0.5 dB, Isolation 30 dB, Coupling 3 dB, Amplitude Balance ±0.3 dB. Tags: Module with Connectors, Cryogenic. More details for QMC-CRYOHCOUPLER-03NM can be seen below.