Open AccessCharacteristic Mode Formulation for Dielectric Coated Conducting Bodies
Author(s) -
Liwen Guo,
Yikai Chen,
Shiwen Yang
Publication year - 2017
Publication title -
ieee transactions on antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.652
H-Index - 200
eISSN - 1558-2221
pISSN - 0018-926X
DOI - 10.1109/tap.2016.2647687
Subject(s) - fields, waves and electromagnetics , aerospace , transportation , components, circuits, devices and systems
In this paper, characteristic mode (CM) formulations are developed from surface integral equation (SIE) for the modal analysis of dielectric coated conducting bodies. The electric field integral equation-Poggio, Miller, Chang, Harrington, Wu, and Tsai SIE is used for modeling the dielectric coated conducting bodies. By ensuring the field continuity on the interface boundary, two types of generalized eigenvalues equations are formulated to determine the resonant behavior of the dielectric coated conducting bodies. Following Poynting's theorem, the resultant eigenvalues indicate the ratio of the imaginary and real part of the complex power for each CM. Zero eigenvalues indicate the resonance in dielectric coated conducting bodies. The corresponding modal fields provide with clear physical insights into the radiation/scattering mechanisms. Numerical results are presented to demonstrate the accuracy of the proposed CM formulations.