Finite Element Electromagnetic Simulator

Student thesis: Master thesis (including HD thesis)

  • Benjamin Becsei Christiansen
  • Jeppe Thiellesen
4. Semester, Communication Technology (Master Programme)
An electromagnetic Finite Element Method
(FEM) simulator is implemented for multiport
homogeneous waveguide networks.
A mathematical and theoretical description of
FEM is discussed. Principles of reference triangles
and numerical integration are utilized
to implement the algorithm. The application
Gmsh is used to generate a single order tetrahedron
mesh used by the FEM algorithm.
Scattering parameters and electric fields are
constructed for the FEM implementation created
in this thesis. The S-parameters and Efield
from the developed implementation are
compared with the analytical solution of a
TE10 perfect conductor waveguide, the Finite
Integration Technique (FIT), and the FEM algorithm
from CST Studio Suite by Dassault
In the passband region for S21, it is found that
the magnitude attained from our implementation
has an error of -71.56 dB and -70.26 dB
for CST-FEM and CST-FIT, respectively.
Publication date3 Jun 2021
Number of pages74
ID: 413675377