Title :
Determination of cutoff frequencies of a square waveguide with a concentric inner circular boundary
fDate :
4/1/1972 12:00:00 AM
Abstract :
The determination of cutoff frequencies in perfectly conducting square waveguides with an inner circular boundary (TM mode) is investigated. The given domain is transformed into an annular region and the transformed partial differential equation is solved by means of a variational technique.
Keywords :
Boundary conditions; Cutoff frequency; Differential equations; Eigenvalues and eigenfunctions; Finite element methods; Laplace equations; Maxwell equations; Moment methods; Partial differential equations; Tellurium;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1972.8659
