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Effects of dielectrics and internal resonances on modal analysis of terminal chassis

Miers, Zachary LU and Lau, Buon Kiong LU (2016) 10th European Conference on Antennas and Propagation, 2016
Abstract
The symmetric PMCHWT method of moments (MoM) impedance matrix allows for the characteristic modes (CMs) of a structure containing dielectric to be found. Recently, this impedance matrix was proven to provide non-real solutions which can be attributed to the MoM internal resonance problem. These internal resonances can be removed through different CM post-processing techniques. However, these studies focus on dielectric structures, whereas the majority of antennas utilize electric conductors as the radiators. As such, dielectrics are often neglected to simplify the CM analysis and hence the problem of internal resonance is overlooked. This work explores the extent of the internal resonance problem in mixed conductor-dielectric structures.... (More)
The symmetric PMCHWT method of moments (MoM) impedance matrix allows for the characteristic modes (CMs) of a structure containing dielectric to be found. Recently, this impedance matrix was proven to provide non-real solutions which can be attributed to the MoM internal resonance problem. These internal resonances can be removed through different CM post-processing techniques. However, these studies focus on dielectric structures, whereas the majority of antennas utilize electric conductors as the radiators. As such, dielectrics are often neglected to simplify the CM analysis and hence the problem of internal resonance is overlooked. This work explores the extent of the internal resonance problem in mixed conductor-dielectric structures. The results reveal that the problem is severe even when the structures only contain small amounts of dielectric materials. Moreover, the significant impact of dielectrics on CMs reveals that dielectrics should be included in CM analysis to ensure high accuracy. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
in press
subject
keywords
Theory of Characteristic Modes, terminal antennas, method of moments, dielectric material
pages
5 pages
conference name
10th European Conference on Antennas and Propagation, 2016
project
EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications
language
English
LU publication?
yes
id
e8cc5c87-3bc7-4009-9b4d-74f4b2724b78 (old id 8837525)
date added to LUP
2016-03-07 10:19:31
date last changed
2016-07-08 07:48:11
@misc{e8cc5c87-3bc7-4009-9b4d-74f4b2724b78,
  abstract     = {The symmetric PMCHWT method of moments (MoM) impedance matrix allows for the characteristic modes (CMs) of a structure containing dielectric to be found. Recently, this impedance matrix was proven to provide non-real solutions which can be attributed to the MoM internal resonance problem. These internal resonances can be removed through different CM post-processing techniques. However, these studies focus on dielectric structures, whereas the majority of antennas utilize electric conductors as the radiators. As such, dielectrics are often neglected to simplify the CM analysis and hence the problem of internal resonance is overlooked. This work explores the extent of the internal resonance problem in mixed conductor-dielectric structures. The results reveal that the problem is severe even when the structures only contain small amounts of dielectric materials. Moreover, the significant impact of dielectrics on CMs reveals that dielectrics should be included in CM analysis to ensure high accuracy.},
  author       = {Miers, Zachary and Lau, Buon Kiong},
  keyword      = {Theory of Characteristic Modes,terminal antennas,method of moments,dielectric material},
  language     = {eng},
  pages        = {5},
  title        = {Effects of dielectrics and internal resonances on modal analysis of terminal chassis},
  year         = {2016},
}