Technical Papers and Presentations

Waveguides are widely adopted for propagation of high frequency signals. Due to misalignment of waveguide system, bended or twisted waveguide is demanded for connection between waveguides. Compared with straight waveguides, twisted waveguides have a shift of cutoff frequency theoretically.

In this study, the cutoff frequency of a twisted waveguide with rectangular cross-section is numerically evaluated by the Wave Optics Module of COMSOL Multiphysics^® simulation software. Propagation of microwave in this type of waveguide is discussed. Results of the simulation agree with theoretical results. With the aid of application builder, efficient design of twisted waveguide with rectangular cross-section are achieved.