Microwave breakdown in output multiplexer filters

Boussavie, C.; Baillargeat, Dominique; Aubourg, Michel; Verdeyme, Serge; Guillon, P.; Catherinot, A.; Vigneron, S.; Théron, B.

doi:10.1109/mwsym.2000.863570

Cited by 5 publications

(7 citation statements)

References 2 publications

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“…The structure under study, is a five-pole filter [3] [4], used in an Output Multiplexer (OMUX) for telecommunication satellites. The filter is composed of three cylindrical metallic cavities, working on TEII3 dual mode.…”

Section: Electromagnetic Analysismentioning

confidence: 99%

“…By studying the distribution of the EM field in the filter, the obtained results shows that the most exposed part to the field is a tuning screw called S and placed in the third cavity [3]. The evolution of the electrical field at the end of screw S is shown in [3][4] as function of the frequency.…”

Section: Electromagnetic Analysismentioning

confidence: 99%

“…The evolution of the electrical field at the end of screw S is shown in [3][4] as function of the frequency.…”

Section: Electromagnetic Analysismentioning

confidence: 99%

“…In reference [3] a theoretical study and an analytical description of the breakdown phenomenon are presented. The study focused on electromagnetic analysis and on discussing the possible causes for the breakdown ignition induced by a high microwave power.…”

Section: Introductionmentioning

confidence: 99%

“…In the present work, based on reference [3], the theoretical study of microwave breakdown initiation is detailed. The phenomena implied in microwave breakdown are theoretically described by considering the influence of injection of electrons and of gold atoms within the gaseous medium due to the fieldinduced heating of the screw.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

One dimensional numerical modelling of microwave breakdown in OMUX filters

Frigui

Baillargeat

Verdeyme

et al. 2007

2007 IEEE/MTT-S International Microwave Symposium

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International audienceA theoretical investigation of microwave breakdown in output filters is presented. In order to model this phenomenon a multidisciplinary approach with a combination of three fields of science was used : electromagnetism, thermal transfer theory and plasma physics. In this article we resume the theoretical study and we present our results, on determination of breakdown appearance and on influence of various parameters on this phenomeno

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Section: Electromagnetic Analysismentioning

confidence: 99%

Section: Electromagnetic Analysismentioning

confidence: 99%

“…The evolution of the electrical field at the end of screw S is shown in [3][4] as function of the frequency.…”

Section: Electromagnetic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

One dimensional numerical modelling of microwave breakdown in OMUX filters

Frigui

Baillargeat

Verdeyme

et al. 2007

2007 IEEE/MTT-S International Microwave Symposium

Self Cite

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Modeling and characterization of microwave breakdown at atmospheric pressure in OMUX filters

Frigui

Bila

Baillargeat

et al. 2013

Int J RF and Microwave Comp Aid Eng

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For output multiplexer (OMUX) filters placed in telecommunication satellites, microwave breakdown happens in an involuntary and undesirable way during tests at atmospheric pressure. This avalanche phenomenon is due to exponential growth of the electronic density caused by thermoelectronic emission under strong electromagnetic field magnitude. In this paper, our objective is to model and characterize experimentally multipole OMUX filters composed with coupled cavities. For identifying the element responsible for the breakdown, the electric field is calculated within each cavity and each iris. In order to characterize the breakdown phenomenon, we proposed an experimental test bench and we measured the power, both at the input and at the output of the filter. The article details the theoretical breakdown prediction and the experimental setup for such a structure. V C 2013Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:46-54, 2014.

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