Analysis of Longitudinal Slots in Ridged Waveguides Using a Hybrid Finite Element galerkin Technique

Khona Garb, Rachel Meyerova, Raphael Kastner

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A hybrid approach, combining the Finite Element Method (FEM) with an integral equation formulation of the tangential electric field, is developed in this work for the solution of longitudinal slots cut in the broad wall of finite thickness of a ridged waveguide. The system of integral equations formulated at both interfaces of the slot, is solved using the Galerkin approach with sinusoidal basis and testing functions. The Green's function for the internal waveguide region, as called for in the integral equation formulation, is generated numerically, utilizing the eigenvalues and eigenfunctions of the waveguide as computed by the FEM with Lagrangian fourth order polynomials. This approach is quite general, allowing for arbitrary waveguide cross sections and compositions. Computations of the slot characteristics performed in this way agree very well with previously documented as well as our own experimental results.

Original languageEnglish
Pages (from-to)833-839
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Volume42
Issue number6
DOIs
StatePublished - Jun 1994

Funding

FundersFunder number
Ramotnsrael Ministry of Industry and Commerce joint fund12875

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