The JSO-05-471/1S from Pulsar Microwave is a 180 Degree Hybrid Coupler that operates from 4 to 20 GHz. It has an insertion loss of less than 1.4 dB and isolation over 15 dB with good amplitude and phase balance. The coupler can handle up to 20 watts of power and has a VSWR of 1.70:1. It is available in a module that measures 2.5 x 1.55 x 0.4 inches with SMA connectors.
