The MQH-0920CH from Marki Microwave is a 90 Degree Hybrid Coupler with Frequency 9 to 20 GHz, Insertion Loss 1 to 2.2 dB, Isolation 17 to 21.5 dB, Coupling 3 dB, Amplitude Balance ±0.55 to ±1.1 dB. Tags: Die. More details for MQH-0920CH can be seen below.