The WMQH-12-18-S from Werbel Microwave is a 90-degree Quadrature Hybrid Coupler that operates from 12 to 18 GHz. It has phase unbalance of +/- 4 degrees, an isolation of over 15 dB and a VSWR of 1.4:1. This device can handle up to 30 watts of power. The hybrid coupler is available in a module with SMA-female connectors.
