The HMC12-387-73.5-5.0 from HXI is a Ferrite based junction circulator that operates from 71 to 76 GHz. It has an insertion loss of 0.9 dB and provides isolation of 19 dB. The circulator can handle up to 0.5 Watts of power and has been designed for the matching and protection of E-band radio, radar, and testing systems. It has a WR-12 Waveguide size and UG-387 flange.