A Simple Analytical Method to Calculate Bending Loss in Dielectric Rectangular Waveguides

Authors

  • Kim Ho Yeap Faculty of Engineering and Green Technology Tunku Abdul Rahman University, Kampar, Perak, 31900, Malaysia
  • Andrew Wei Chuen Tan Faculty of Engineering and Green Technology Tunku Abdul Rahman University, Kampar, Perak, 31900, Malaysia
  • Koon Chun Lai Faculty of Engineering and Green Technology Tunku Abdul Rahman University, Kampar, Perak, 31900, Malaysia
  • Humaira Nisar Faculty of Engineering and Green Technology Tunku Abdul Rahman University, Kampar, Perak, 31900, Malaysia

Keywords:

Analytical method, attenuation constant, bending loss, perturbation theory, propagation constant, rectangular waveguides

Abstract

We present a simple analytical method to compute attenuation in bent dielectric rectangular waveguides. An approximate formulation for the attenuation constant is first derived by determining the ratio of average power loss per unit length to the average power propagating along the waveguide. Since the waveguide has been simplified into a slab in the process of derivation, losses at the four edges of the structure have been neglected. To account for these losses, the perturbation theory has been employed. The total loss is found to agree closely with that obtained via the Finite Element Method (FEM). Unlike the FEM which requires considerable computational time and power to solve, we demonstrate that the analytical method proposed here can easily be applied and it gives sufficiently accurate result.

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Published

2021-07-25

How to Cite

Kim Ho Yeap, Andrew Wei Chuen Tan, Koon Chun Lai, & Humaira Nisar. (2021). A Simple Analytical Method to Calculate Bending Loss in Dielectric Rectangular Waveguides. The Applied Computational Electromagnetics Society Journal (ACES), 33(03), 359–362. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/9239

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