Title :
Finite element solution of time-harmonic modal fields in periodic structures
Author_Institution :
Cambridge Univ., UK
Abstract :
A weighted residual FEM formulation suitable for the electromagnetic model analysis of periodic structures to give numerical k- beta relationships and field patterns is introduced. A two-dimensional realisation of the formulation applying to open-sided ridged waveguides agrees well with analysis. The general method described could be applicable to practical travelling wave tube slow wave structures.
Keywords :
electromagnetic field theory; finite element analysis; travelling-wave-tubes; waveguide theory; EM fields; TWT; electromagnetic model analysis; field patterns; open-sided ridged waveguides; periodic structures; slow wave structures; time-harmonic modal fields; travelling wave tube; two-dimensional realisation; weighted residual FEM formulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910022
