Articles | Volume 12
Adv. Radio Sci., 12, 13–19, 2014
https://doi.org/10.5194/ars-12-13-2014
Adv. Radio Sci., 12, 13–19, 2014
https://doi.org/10.5194/ars-12-13-2014

  10 Nov 2014

10 Nov 2014

A mixed finite-element formulation for the modal analysis of electromagnetic waveguides featuring improved low-frequency resolution of transmission line modes

R. Baltes1, J. Al Ahmar2, O. Farle1, and R. Dyczij-Edlinger1 R. Baltes et al.
  • 1Chair of Electromagnetic Theory, Dept. of Physics and Mechatronics, Saarland University, Saarbrücken, Germany
  • 2Chair of Microintegration and Reliability, Dept. of Physics and Mechatronics, Saarland University, Saarbrücken, Germany

Abstract. This paper presents an improved finite-element formulation for axially uniform electromagnetic waveguides. It allows for both dielectric and conduction losses and covers the entire range from optics down to the static limit. Propagation coefficients of small magnitude, particularly those of transmission line modes in the low-frequency regime, are computed much more accurately than with previous approaches.