Mode Filters for Oversized Rectangular Waveguides: A Modal Approach

Silvio Ceccuzzi, Cristina Ponti, Gian Luca Ravera, Giuseppe Schettini

Research output: Contribution to journalArticle

6 Citations (Scopus)


A semi-analytical approach, relying on the mode-matching method and the resonator technique, is proposed. It is conceived to evaluate the performance of mode filters, based on corrugations partially filled with an absorbing material, in the case of oversized rectangular waveguides. The mathematical formulation allows an accurate and fast computation of the scattering parameters, through closed-form expression of the surface integrals and some matrix algebra. The theoretical model is implemented in a code that is benchmarked against a finite-element method to elucidate its advantages with respect to volumetric solvers. After giving an insight on the physical mechanisms ruling the performance of these devices, the modal method is used to run the particle swarm optimization algorithm for different types of devices, taking advantage of the reduced computation time of the developed tool.
Original languageEnglish
Article number7154520
Pages (from-to)2468 - 2481
Number of pages14
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number8
Publication statusPublished - 1 Aug 2015
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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