Publication Date


Document Type


Committee Members

Brian Rigling (Committee Member), Michael Saville (Advisor), Yan Zhuang (Committee Member)

Degree Name

Master of Science in Engineering (MSEgr)


The tapered transition waveguide is used in waveguide measurement systems for characterizing biaxial electromagnetic properties of materials, but its complex geometry does not support an analytic field solution. To ensure single-mode field behavior, the system includes sections of standard waveguides that only support the dominant mode. As a result, full-wave modeling and simulation of the system is exceedingly large.

Using the finite-element method to analyze the high-order modes at the junctions and to explore field configurations within the transition altering geometry, it is shown that besides the TE10 mode, the TE11 mode is significant. Then, two methods are proposed for using multi-mode excitation in the model as a way to simulate the scattering parameters of a material without the feed and transition section.

Page Count


Department or Program

Department of Electrical Engineering

Year Degree Awarded