On Characteristic Modes in the Presence of a Grounded Dielectric Slab

authored by: Adrian Mrochen, Leonardo Mörlein, Dirk Manteuffel
Abstract: In this work, the characteristic modes of a perfectly electrically conducting scatterer in the presence of a lossless grounded dielectric slab are investigated. The orthogonality properties of the far fields of the characteristic modes are discussed in terms of space wave and surface wave far fields. Then, the resonance behavior of the characteristic modes is examined under variation of dielectric permittivity, dielectric slab thickness and frequency. As it turns out, the far field orthogonality of lossless systems still holds true overall, but it must be distinguished between space wave and surface wave fields. Also, the resonance behavior can be systematically explained using knowledge from patch antennas and geometrical optics.
Organisation(s): Institute of Microwave and Wireless Systems
Type: Conference contribution
Pages: 1-5
No. of pages: 5
Publication date: 30.03.2025
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computer Networks and Communications, Modelling and Simulation, Instrumentation, Radiation
Electronic version(s): https://doi.org/10.23919/EuCAP63536.2025.11000038 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{1905ed75e5da4969aebf19ef25dd11ce,
title = "On Characteristic Modes in the Presence of a Grounded Dielectric Slab",
abstract = "In this work, the characteristic modes of a perfectly electrically conducting scatterer in the presence of a lossless grounded dielectric slab are investigated. The orthogonality properties of the far fields of the characteristic modes are discussed in terms of space wave and surface wave far fields. Then, the resonance behavior of the characteristic modes is examined under variation of dielectric permittivity, dielectric slab thickness and frequency. As it turns out, the far field orthogonality of lossless systems still holds true overall, but it must be distinguished between space wave and surface wave fields. Also, the resonance behavior can be systematically explained using knowledge from patch antennas and geometrical optics.",
keywords = "Optical losses, Surface waves, Patch antennas, Resonant frequency, Geometrical optics, Resonance, Dielectrics, Slabs, Permittivity, Optical surface waves, characteristic modes, far field, grounded dielectric slab, resonance behavior, surface waves",
author = "Adrian Mrochen and Leonardo M{\"o}rlein and Dirk Manteuffel",
note = "Publisher Copyright: {\textcopyright} 2025 European Association on Antennas and Propagation.; 19th European Conference on Antennas and Propagation, EuCAP 2025, EuCAP 2025 ; Conference date: 30-03-2025 Through 04-04-2025",
year = "2025",
month = mar,
day = "30",
doi = "10.23919/EuCAP63536.2025.11000038",
language = "English",
isbn = "979-8-3503-6632-7",
pages = "1--5",
booktitle = "19th European Conference on Antennas and Propagation, EuCAP 2025",
publisher = "IEEE",
}