A Radiospurs Propagation Tools Site

There are thre basic Waveguide types.

Rectangular Waveguide

The classical rectangular box.

Rectangular Waveguide

Circular Waveguide

The ultra low loss waveguide. If you can keep the TEM going round the bends.

Circular Waveguide

Double Ridge Waveguide

Put a dorsal spine down the rectangular guide and you get a Double Ridged Waveguide. Extra BW here.

Double Ridge Waveguide