Microwave corona breakdown prediction in arbitrarily-shaped waveguide based filters

T. Pinheiro-Ortega*, J. Monge, S. Marini, J. Sanz, E. Sorolla, M. Mattes, C. Vicente, J. Gil, V. E. Boria, B. Gimeno

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This letter describes an efficient algorithm to predict the RF gas breakdown power threshold in microwave devices with complex geometries. The two necessary calculations when investigating such a phenomenon have been performed: on the one hand, the computation of the electromagnetic fields inside the structure and, on the other hand, the determination of the breakdown onset itself. The electromagnetic fields are solved by means of modal techniques and coupled to the free electron continuity equation, which is solved by the Finite Element Method. Proceeding in this way, a very simple criterion to find out whether microwave corona breakdown will take place is derived. This numerical implementation of the developed algorithms has been tested with other theoretical approaches and with experimental measurements, showing very good agreement.

Original languageEnglish
Article number5427142
JournalIEEE Microwave and Wireless Components Letters
Volume20
Issue number4
Pages (from-to)214-216
Number of pages3
ISSN1531-1309
DOIs
Publication statusPublished - Apr 2010
Externally publishedYes

Keywords

  • Electromagnetic simulation
  • Gas discharge
  • High power
  • Microwave breakdown threshold
  • Microwave filters

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