Efficient analysis, design, and filter applications of EBG waveguide with periodic resonant loads

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • Heriot-Watt University
  • Loughborough University
  • IEEE
  • Institute of Integrated Systems
  • Hellenic Navy

Abstract

An efficient analysis and design of an electromagnetic-bandgap (EBG) waveguide with resonant loads is presented. Equivalent-circuit analysis is employed to demonstrate the differences between EBG waveguides with resonant and nonresonant loadings. As a result of the resonance, transmission zeros at finite frequencies emerge. The concept is demonstrated in E-plane waveguides. A generic fast and efficient formulation is presented, which starts from the generalized scattering matrix of the unit cell and derives the dispersion properties of the infinite structure. Both real and imaginary parts of the propagation constant are derived and discussed. The Floquet wavelength and impedance are also presented. The theoretical results are validated by comparison with simulations of a finite structure and experimental results. The application of the proposed EBG waveguide in the suppression of the spurious passband of a conventional E-plane filter is presented by experiment.

Bibliographic note

Copyright 2011 Elsevier B.V., All rights reserved.

Details

Original languageEnglish
Pages (from-to)3885-3892
Number of pages8
JournalIEEE Transactions on Microwave Theory and Techniques
Volume54
Issue number11
Publication statusPublished - 1 Nov 2006