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Chin. Phys., 2005, Vol. 14(11): 2300-2304    DOI: 10.1088/1009-1963/14/11/026

Variational analysis of the disc-loaded waveguide slow-wave structures

Li Jian-Qing, Mo Yuan-Long
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract  The variational method is applied to calculate the dispersion characteristics of disc-loaded waveguide slow-wave structures. The parameters describing the waveguide discontinuities in disc-loaded waveguide are calculated by the variational method. Then the dispersion characteristics of slow-wave structures are obtained using lossless microwave quadrupole theory. Good agreement was observed between results of the variational method and those of field matching method and high frequency structure simulator. In the case of broad band, results of the variational method are better than those of field matching method.
Keywords:  variational method      dispersion characteristics      disc-loaded waveguide      slow-wave structures     
Received:  05 January 2005      Published:  20 November 2005
PACS:  84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))  
  84.40.Az (Waveguides, transmission lines, striplines)  
Fund: Project supported by the Foundation of National Key Laboratory for High Power Vacuum Electronics.

Cite this article: 

Li Jian-Qing, Mo Yuan-Long Variational analysis of the disc-loaded waveguide slow-wave structures 2005 Chin. Phys. 14 2300

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