The QE-19-442 from Pulsar Microwave is a 90° Hybrid Coupler that operates from 0.1 to 10 MHz. This 3 dB coupler can handle an input power of 1 W, provides more than 20 dB of isolation, and has an insertion loss of 0.8 dB. It has an amplitude balance of ±1 dB and a phase balance of ±5°. The coupler is available in a module that measures 3.00 x 1.60 x 0.75 inches and has SMA connectors.
