Corrugated Waveguides with Stepped Ridges and Stratified Core: Reduction of Metal and Aperture Losses and Study of Thermal and RF Breakdown

Mou-Kehn Ng*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Numerical results generated by computer codes written based on a full-wave modal analysis of transverse corrugated circular waveguides with segmented grooves and a waveguiding core that is stratified into concentric layers, as detailed in a previous paper, are presented here. It is shown that the reduction of metal losses and enhancement of the aperture efficiency of the operational mode can be achieved by ceramic linings of the groove floors as well as the surface of the corrugations. The benefits of chamfering the groove-floor coating are also demonstrated. Dielectric losses and thermal and RF breakdown are also studied.

Original languageEnglish
Article number7831408
Pages (from-to)1407-1421
Number of pages15
JournalIEEE Transactions on Microwave Theory and Techniques
Volume65
Issue number5
DOIs
StatePublished - 1 May 2017

Keywords

  • Conductor and dielectric loss
  • corrugated circular waveguides
  • gyrotrons
  • thermal and RF breakdown

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