Open AccessMicrowave Absorption Properties of PTFE Using T/R Rectangular Waveguide, Nicholson-Rose-Weir, and Finite Element Method
Author(s) -
Ethar Yahya Salih,
Abd-Alrahman Khalid Alani,
Mohammed A. Jawad,
Zulkifly Abbas
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1829/1/012012
Subject(s) - finite element method , microwave , materials science , reflection (computer programming) , waveguide , absorption (acoustics) , weir , electromagnetic shielding , rose (mathematics) , optics , composite material , mathematics , geometry , physics , telecommunications , computer science , optoelectronics , thermodynamics , cartography , programming language , geography
In this manuscript, the S-parameters, reflection and transmission coefficients, of PTFE at different thicknesses for microwave absorption applications were investigated in conjunction with WR90 T/R rectangular waveguide. Subsequently, the reflection and absorption shielding effectiveness SE R and SE A values were calculated using the measured S-parameters values, in which an inversely proportional relation was found. Furthermore, using Nicholson-Rose-Weir (NRW) and Finite Element Method (FEM) approaches, the measured S-parameters were validated. Herein, the mean relative errors were calculated; in particular, it was found that the FEM delivers an upright agreement with the measured data in comparison to the utilized NRW. This suggests the usefulness of the FEM approach as a low-cost alternative for the actual laboratory investigation.