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Post-processing removal of non-real characteristic modes via basis function perturbation

Miers, Zachary LU and Lau, Buon Kiong LU (2016) IEEE International Symposium on Antennas and Propagation, 2016
Abstract
For more than 30 years since it was first proposed by Harrington et al., the Theory of Characteristic Mode (TCM) has only been applied to perfect electric conductors (PEC), and more recently lossless dielectric materials. One key challenge in computing the characteristic modes (CMs) of non-PEC materials using the PMCHWT surface integral equation is the presence of internal resonances in the solution space, due to the required forcing of symmetry on the impedance matrix. In lossless dielectrics, it was shown that these non-real CMs can be removed in post-processing through far-field power analysis. However, this method breaks down in lossy materials as it relies on the assumption of no radiation losses. This paper proposes the use of basis... (More)
For more than 30 years since it was first proposed by Harrington et al., the Theory of Characteristic Mode (TCM) has only been applied to perfect electric conductors (PEC), and more recently lossless dielectric materials. One key challenge in computing the characteristic modes (CMs) of non-PEC materials using the PMCHWT surface integral equation is the presence of internal resonances in the solution space, due to the required forcing of symmetry on the impedance matrix. In lossless dielectrics, it was shown that these non-real CMs can be removed in post-processing through far-field power analysis. However, this method breaks down in lossy materials as it relies on the assumption of no radiation losses. This paper proposes the use of basis function perturbation to isolate the non-real CMs from the real CMs when CM analysis is applied to lossy materials. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
in press
subject
keywords
Characteristic modes, antenna design, dielectric resonator antennas
pages
2 pages
conference name
IEEE International Symposium on Antennas and Propagation, 2016
project
EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications
language
English
LU publication?
yes
id
1b5071b8-592c-40ea-ac70-c91c1333233b (old id 8837537)
date added to LUP
2016-03-07 10:22:29
date last changed
2016-04-16 12:10:00
@misc{1b5071b8-592c-40ea-ac70-c91c1333233b,
  abstract     = {For more than 30 years since it was first proposed by Harrington et al., the Theory of Characteristic Mode (TCM) has only been applied to perfect electric conductors (PEC), and more recently lossless dielectric materials. One key challenge in computing the characteristic modes (CMs) of non-PEC materials using the PMCHWT surface integral equation is the presence of internal resonances in the solution space, due to the required forcing of symmetry on the impedance matrix. In lossless dielectrics, it was shown that these non-real CMs can be removed in post-processing through far-field power analysis. However, this method breaks down in lossy materials as it relies on the assumption of no radiation losses. This paper proposes the use of basis function perturbation to isolate the non-real CMs from the real CMs when CM analysis is applied to lossy materials.},
  author       = {Miers, Zachary and Lau, Buon Kiong},
  keyword      = {Characteristic modes,antenna design,dielectric resonator antennas},
  language     = {eng},
  pages        = {2},
  title        = {Post-processing removal of non-real characteristic modes via basis function perturbation},
  year         = {2016},
}