The X4C45J1-03G from TTM Technologies is a Surface Mount 90° Hybrid Coupler that operates from 3.6 to 5.1 GHz. This 3 dB coupler can handle a CW input power of up to 5 W and has an insertion loss of 0.5 dB. It provides isolation of more than 20 dB. The coupler has an amplitude balance of ±0.5 dB and a phase balance of ±4°. It is available in a surface-mount package that measures 0.08 x 0.05 x 0.025 inches and is ideal for 5G cellular applications.
