Numerical solution of fields in lossy structures using MAGY

Author

Vlasov, Alexander N. ; Antonsen, Thomas M., Jr.

Volume

48

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

45

Lastpage

55

Abstract

Lossy structures are used in vacuum electronic devices to control and suppress modes. Numerical simulation of the effect of these lossy structures is critical to the design and optimization of devices. The gyrotron simulation code MAGY makes use of the generalized telegraphist´s equations in which the transverse structure of fields is represented as a sum of local modes of a metallic waveguide. If the wall is not a perfect conductor then sum over modes is not uniformly convergent. We have developed an algorithm to deal with this problem and allow for the simulation of structure with highly lossy walls. The theory and implementation of this algorithm are presented

Keywords

Maxwell equations; electromagnetic field theory; gyrotrons; microwave tubes; numerical analysis; MAGY; generalized telegraphist equations; gyrotron simulation code; highly lossy walls; local modes; lossy structures; metallic waveguide; numerical solution; transverse field structure; vacuum electronic devices; Computational modeling; Design optimization; Electromagnetic fields; Electromagnetic waveguides; Electron beams; Equations; Gyrotrons; Microwave devices; Surface impedance; Surface treatment;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.892166

Filename

892166