Applied Electromagnetics

Applied Electromagnetics

Simulation of Electromagnetic Fields and Characteristics of Twisted Waveguides with Elliptical Cross Section Containing Plasma for X-Band Applications

Document Type : Original Article

Authors
1 PhD Student, University of Kashan, Kashan, Iran
2 Associate Professor, University of Kashan, Kashan, Iran
Abstract
In this research, the electromagnetic characteristics of a twisted elliptical waveguide, EW77, filled with plasma and bounded by Perfect Electric Conductor and Perfect Magnetic Conductor walls are numerically investigated using COMSOL Multiphysics. The behavior of electromagnetic fields in the presence of plasma, along with the controllability of transmission and reflection characteristics in the X-band frequency range, is examined.For each configuration, the dispersion relation and scattering parameters are plotted over a specified frequency range. The behavior of electromagnetic fields for different twist rates and frequencies is analyzed using the finite element method based simulation approach.The numerical and simulation results indicate that the twisted EW77 waveguide exhibits low reflection and high power transmission. Furthermore, the presence of plasma leads to change in the reflection and transmission of power at specific frequencies.
Keywords

Volume 13, Issue 2 - Serial Number 31
Autumn and Winter
February 2026
Pages 83-94

  • Receive Date 07 December 2025
  • Revise Date 26 January 2026
  • Accept Date 12 February 2026
  • Publish Date 20 February 2026