Analysis of corrugated waveguides with a set of edge-conditioned vector basis functions

The paper presents a rigorous full-wave analysis of corrugated circular waveguides. The propagation properties are determined from a classical eigenvalue problem with no recourse to space harmonics. A set of vector edge-conditioned basis functions is used to guarantee numerical efficiency. The speed of the method allows the accurate determination of the entire dispersion diagram of a large number of modes. Results are presented and compared with available data to demonstrate the efficiency and accuracy of the approach.