Efficient Analysis of Longitudinally Corrugated Rods Using Asymptotic Boundary Conditions for Investigation of Conductor Losses and Plasmonic Field Localization

Chang Fu Chin, Mou Kehn Ng*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

This paper proposes an analytical modal method that provides quick yet accurate surface-wave solutions for tackling longitudinally corrugated conducting circular rods with dielectric-filled grooves. Using asymptotic corrugations boundary condition-the asymptotic corrugated boundary condition, this elegant albeit nonfull-wave approach offers a simple way to obtain not only the dispersion relation between the frequency and wavenumber but also the modal field distribution from the solution of the final system matrix for the amplitude coefficients. The proposed method is validated with an independent full-wave simulation software. Parametric studies for the field localization are carried, and the results of conductor losses as well as radial attenuation are also reported. The results of measurements conducted on a manufactured corrugated rod are presented at the end.

Original languageEnglish
Article number8643343
Pages (from-to)3185-3199
Number of pages15
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number5
DOIs
StatePublished - 1 May 2019

Keywords

  • Asymptotic boundary conditions
  • gyrotrons
  • longitudinal corrugated rod
  • modal analysis
  • surface wave

Fingerprint Dive into the research topics of 'Efficient Analysis of Longitudinally Corrugated Rods Using Asymptotic Boundary Conditions for Investigation of Conductor Losses and Plasmonic Field Localization'. Together they form a unique fingerprint.

  • Cite this