Title :
Calculation of 3-D waveguide structures with EFIE
Author :
Denisov, G.G. ; Gashturi, A.P. ; Mishakin, S.V. ; Samsonov, S.V.
Author_Institution :
Inst. of Appl. Phys., Russian Acad. of Sci., Nizhny Novgorod
Abstract :
Several examples of numerical calculations of waveguiding structures for microwave devices are presented. In the calculations we used the electric field integral equation (EFIE) model, applied to infinitely thin, perfectly conducting waveguide surfaces. The method of moments (MoM) is used to transform this model into an algebraic system of linear equations. It is solved by means of an iterative procedure with fast multipole method (FMM). The solution represents induced surface current, from which the electromagnetic field in the device is obtained. With the help of this method an asymmetric mode converter TE01-TE11 was calculated and optimized for maximum efficiency. We have also calculated several multi-mode helical structures, which are planned to be used in gyro-TWT and pulse compressors, and analyzed their dispersion curves. Experiments with these components were carried out. The numerical results agree well with the measurements.
Keywords :
conducting bodies; electric field integral equations; electromagnetic fields; iterative methods; method of moments; waveguide theory; 3D waveguide structures; EFIE; MoM; algebraic system; asymmetric mode converter; conducting waveguide surfaces; dispersion curves; electric field integral equation; electromagnetic field; fast multipole method; gyro-TWT; iterative procedure; linear equations; method of moments; microwave devices; multimode helical structures; pulse compressors; surface current; waveguiding structures; Electromagnetic fields; Electromagnetic waveguides; Integral equations; Iterative methods; Microwave devices; Moment methods; Optimization methods; Pulse compression methods; Surface waves; Transforms;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516727