Special Issue "Computational Electromagnetics and Its Applications"

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: 15 June 2020.

Special Issue Editor

Prof. Dr. Luca Di Rienzo
E-Mail Website
Guest Editor
Dipartimento di Elettronica, Informazione e Bioingegneria - Politecnico di Milano, Italy
Interests: Computational Electromagnetics

Special Issue Information

Dear Colleagues,

Electromagnetic devices and systems are becoming more and more complex, and experimental methods are often too costly or even not applicable. On the other hand, the rapid increase in computational power has made computational electromagnetics a reliable approach in virtual prototyping, design, and optimization. Hence, more efficient numerical models are needed to simulate the behavior of electromagnetic devices and give further insight into their operation in strong growing areas, such as energy, health, safety, and mobility.

The main aim of this Special Issue is to seek high-quality submissions that highlight contributions in numerical computation of electromagnetic fields and its applications to the design and operation of electromagnetic devices for all frequency ranges.

The topics of interest include but are not limited to:

  • Computational methods for electromagnetics
  • Electromagnetic modeling
  • Optimization of electromagnetic devices
  • Electromagnetic inverse problems
  • Uncertainty quantification in computational electromagnetics
  • Electromagnetic devices and application

Prof. Dr. Luca Di Rienzo
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (3 papers)

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Research

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Open AccessFeature PaperArticle
Efficient Evaluation of Slowly Converging Integrals Arising from MAP Application to a Spectral-Domain Integral Equation
Electronics 2019, 8(12), 1500; https://doi.org/10.3390/electronics8121500 - 08 Dec 2019
Abstract
In this paper, we devised an analytical technique to efficiently evaluate the improper integrals of oscillating and slowly decaying functions arising from the application of the method of analytical preconditioning (MAP) to a spectral-domain integral equation. The reasoning behind the method’s application may [...] Read more.
In this paper, we devised an analytical technique to efficiently evaluate the improper integrals of oscillating and slowly decaying functions arising from the application of the method of analytical preconditioning (MAP) to a spectral-domain integral equation. The reasoning behind the method’s application may consistently remain the same, but such a procedure can significantly differ from problem to problem. An exhaustive and understandable description of such a technique is provided in this paper, where we applied MAP for the first time to analysis of electromagnetic scattering from a zero-thickness perfectly electrically conducting (PEC) disk in a planarly layered medium. Our problem was formulated in the vector Hankel transform domain and discretized via the Galerkin method, with expansion functions reconstructing the physical behavior of the surface current density. This ensured fast convergence in terms of the truncation order, but involved numerical evaluation of slowly converging integrals to fill in the coefficient matrix. To overcome this problem, appropriate contributions were pulled out of the kernels of the integrals, which led to integrands transforming into exponentially decaying functions. Subsequently, integrals of the extracted contributions were expressed as linear combinations of fast-converging integrals via the Cauchy integral theorem. As shown in the numerical results section, the proposed technique drastically outperformed the classical analytical asymptotic-acceleration technique. Full article
(This article belongs to the Special Issue Computational Electromagnetics and Its Applications)
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Open AccessFeature PaperArticle
Magnetic Loss Analysis in Coaxial Magnetic Gears
Electronics 2019, 8(11), 1320; https://doi.org/10.3390/electronics8111320 - 09 Nov 2019
Abstract
This paper proposes a procedure for computing magnetic losses in coaxial magnetic gears. These magnetic structures are made of permanent magnets and ferromagnetic poles in relative motion transferring torque between two shafts in a contactless way. The loss computation in magnetic materials is [...] Read more.
This paper proposes a procedure for computing magnetic losses in coaxial magnetic gears. These magnetic structures are made of permanent magnets and ferromagnetic poles in relative motion transferring torque between two shafts in a contactless way. The loss computation in magnetic materials is crucial to define the system performance. The flux distribution inside the iron parts is computed by means of the finite element method and a model of iron losses taking into account the rotational nature of the flux loci is applied. The procedure highlights where the major loss sources are present and gives the opportunity to evaluate some corrective measures to reduce their effects. Particular attention is devoted to the 2D modeling in presence of permanent magnets segmentation. Full article
(This article belongs to the Special Issue Computational Electromagnetics and Its Applications)
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Review

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Open AccessReview
Open-Source Software for Electromagnetic Scattering Simulation: The Case of Antenna Design
Electronics 2019, 8(12), 1506; https://doi.org/10.3390/electronics8121506 - 09 Dec 2019
Abstract
Electromagnetic scattering simulation is an extremely wide and interesting field, and its continuous evolution is associated with the development of computing resources. Undeniably, antenna design at all levels strongly relies on electromagnetic simulation software. However, despite the large number and the high quality [...] Read more.
Electromagnetic scattering simulation is an extremely wide and interesting field, and its continuous evolution is associated with the development of computing resources. Undeniably, antenna design at all levels strongly relies on electromagnetic simulation software. However, despite the large number and the high quality of the available open-source simulation packages, most companies have no doubts about the choice of commercial program suites. At the same time, in the academic world, it is frequent to develop in-house simulation software, even from scratch and without proper knowledge of the existing possibilities. The rationale of the present paper is to review, from a practical viewpoint, the open-source software that can be useful in the antenna design process. To this end, an introductory overview of the usual design workflow is firstly presented. Subsequently, the strengths and weaknesses of open-source software compared to its commercial counterpart are analyzed. After that, the main open-source packages that are currently available online are briefly described. The last part of this paper is devoted to a preliminary numerical benchmark for the assessment of the capabilities and limitations of a subset of the presented open-source programs. The benchmark includes the calculation of some fundamental antenna parameters for four different typologies of radiating elements. Full article
(This article belongs to the Special Issue Computational Electromagnetics and Its Applications)
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