Title :
A comparison of three-dimensional simulations of traveling-wave tube cold-test characteristics using CST MICROWAVE STUDIO and MAFIA
Author :
Chevalier, C.T. ; Herrmann, K.A. ; Kory, C.L. ; Wilson, J.D. ; Cross, A.W.
Author_Institution :
Analex Corp., Cleveland, OH, USA
Abstract :
Previously, it was shown that MAFIA (solutions of Maxwell´s equations by the Finite Integration Algorithm), a three-dimensional simulation code, can be used to produce accurate cold-test characteristics including frequency-phase dispersion, interaction impedance, and attenuation for traveling-wave tube (TWT) slow-wave structures. In an effort to improve user-friendliness and simulation time, a model was developed to compute the cold-test parameters using the electromagnetic field simulation software package CST MICROWAVE STUDIO (MWS). Cold-test parameters were calculated for several slow-wave circuits including a ferruled coupled-cavity, a folded waveguide, and a novel finned-ladder circuit using both MWS and MAFIA. Comparisons indicate that MWS provides more accurate cold-test data with significantly reduced simulation times.
Keywords :
electron tube testing; slow wave structures; travelling wave tubes; CST MICROWAVE STUDIO; MAFIA; MWS; Maxwell equations; attenuation; cold test characteristics; electromagnetic field; ferruled coupled-cavity; finite integration algorithm; finned-ladder circuit; folded waveguide; frequency-phase dispersion; interaction impedance; slow-wave structure; software package; three-dimensional simulation; traveling wave tube; Attenuation; Circuit simulation; Computational modeling; Coupling circuits; Electromagnetic fields; Electromagnetic modeling; Frequency; Impedance; Maxwell equations; Software packages;
Conference_Titel :
Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International
Print_ISBN :
0-7803-7256-5
DOI :
10.1109/IVELEC.2002.999236
