The SMC-176D180 from Scientific Microwave Corporation is a Magic Tee that operates from 18 to 40 GHz. It provides an isolation of 15 dB in co-linear arms and 30 dB isolation in its E & H arms. This four-port magic tee can be used as a power combiner or divider based on the requirements. The double ridge magic tee measures 1.5 x 1 inch and has a standard WRD180 waveguide interface at all 4 ports.