The D3I2640Q from DiTom Microwave is an RF Isolator that operates from 26.5 to 40 GHz. It can handle an average input power of up to 5 W, a peak input power of 30 W, and a reverse power of 2 W. This isolator provides an isolation of more than 14 dB and has an insertion loss of less than 1 dB. It is available in a module that measures 0.5 x 0.5 x 0.7 inches with 2.4 mm male/female connectors.