20 IEEE CEFC 2020 The Nineteenth Biennial IEEE Conference on Electromagnetic Field Computation Pisa, November 16 - 18, 2020 Virtual Event Technical Program CEFC 2020, PISA, ITALY TABLE OF CONTENTS TABLE OF CONTENTS……………………………………………………………………….….…2 CEFC 2020 Chairman’s Welcome…………………………………………………………….…..….3 Message from the Editorial Board Chairman…………………………………………………….…...5 C onference Committees…………………………………………………………………………..…..7 General C onference Information………….…………………………………………………………..9 Supporters of the Conference………………………………………………………………….……..10 Special Invited Presentations…………………………………………………………………….…...11 Technical Program Overview…………...……………………………………………………….…...14 Technical Program……………………………………………………………………………………15 Author Index…………………………………………………………..……………………………..56 2 CEFC 2020, PISA, ITALY CEFC 2020 Chairman’s Welcome Dear Colleagues, It is my great pleasure to welcome you to the 19th biennal IEEE Conference on Electromagnetic Field Computation (CEFC 2020). I wish I could have written “Welcome to Pisa”, but unfortunately, this conference, as well as other events scheduled in 2020, have faced the threat of the Covid-19 pandemic. Since January 2020, we have been monitoring the situation, in Italy and all over the world, and our main concern has always been the safety and well being of the CEFC 2020 participants. We first decided to postpone the conference, hoping that in November the world’s situation would have been better, and would allow us to meet in person. However, this was not the case scenario and we ended up switching to a virtual event. The COVID-19 pandemic has changed our lives, and has changed (maybe for good) the way we work, reducing the time we spend in our workplaces and the way we interact with people face to face . I am convinced that the true added value of a conference is meeting colleagues, exchanging opinions in person, asking questions during the Q&A time after a presentation, starting cooperation and spending time together during coffee breaks or lunches. I could enumerate many more activities that we usually perform during a conference, and they all concur to the definition of a conference as a fruitful event. A virtual event could never give us such benefits, and it is a downgraded experience if compared to a real event. However, conferences are one of the easiest way we, researchers, learn what other colleagues do and show what we do to others; therefore, virtual conferences are absolutely better than no conferences at all. So here we are, all attending the first, and I hope the last, virtual CEFC conference. I wish to express my gratitude to you all, for trusting this organization since from the very beginning and the people behind it: I do appreciate the effort made by any single author in planning the attendance, in thinking and writing any single submitted digest. You have been patient in waiting for news about the postponement and, since Septemer 1st, for accepting the transformation into a virtual event. In addition to this, I wish to akcnowledge the work done by the Editorial Board members and by each reviewer: the time they have voluntarily spent on the activities relative to CEFC 2020 has contributed to raise the conference level. Last but not least, my deepest gratitude goes to the Editorial Board chairs, my colleagues (and now friends) Yasushi and Alessandro, with whom I had the pleasure to work for several months, characterized by countless emails and numerous skype calls hold in awkward times of the day. It has been tiring but enriching! The conference reached a number of 461 digests, a number that must be compared to the 838 digests received. This shows the effect of the COVID-19 pandemic, but at the same time shows the utmost influence of CEFC series conferences in computational electromagnetics community. The accepted 461 high-quality digests are distributed into 11 poster sessions and 18 oral sessions, following the usual CEFC conference schedule. Attendees will have the possibilty to interact with each other during both the oral and the poster sessions, asking questions to the presenting auhtor. As for the city of Pisa, I would like to mention that its origin probably dates back to the Etruscan civilization; it is now a beautiful mid-sized town, in which the University (founded in 1343) and the Miracles’s Square are only a couple of highlights amongst the many cultural and environmental 3 CEFC 2020, PISA, ITALY attractions the cuty can offer. I hope you will have the change to visit Pisa in the future, if you have not done so yet, when travelling will be again a pleasure. Stay safe and enjoy CEFC2020!! Sami Barmada, Full Professor, University of Pisa, Italy Chairman of CEFC 2020 4 CEFC 2020, PISA, ITALY Message from the Editorial Board Chairmen Dear Colleagues, The Nineteens’ Biennial IEEE Conference on Electromagnetic Field Computation (CEFC 2020) is being held in a virtual form for the first time in CEFC history, November 16 to 18, 2020. CEFC 2020 was originally scheduled from April 19 – 22, 2020 in Pisa, Italy. However, the Sars-Cov2 pandemic outspread obliged us to postpone to November, hoping to run a presence meeting, at least partially. In August 2020, due to uncertainty in the disease evolution, we were forced to turn the meeting into a virtual conference. Let us remind here that after the pandemic start in March, we had to face so many withdrawals! But, in the meantime, we had also the opportunity to include other, new and high-quality post-deadline digests. Every single decision was tough, we must say. Given this background, we do sincerely appreciate your patience and we would like to thank you for your enduring support to the CEFC 2020. The final conference technical program includes 461 digests from 35 countries and districts. All scientific contributions have been reviewed by qualified scholars, so we feel comfortable in our strong belief that the CEFC2020 provides a high-quality scientific program, ranging over many of the forefront research topics in electromagnetic field computation. This confirms CEFC among the most relevant conferences for the computational electromagnetics community. The IEEE CEFC 2020 conference activities will offer a stimulating forum for specialists from academia, research centers, and industry worldwide to establish cooperation and share knowledge, experience, and establish cross-fertilization of new ideas in the areas of Static and Quasi-static Fields, Wave Propagation, Material Modeling, Electromagnetic Field Coupled Problems, Numerical Techniques, Optimization and Design, Software Methodology, Nanomagnetics and Nanophotonics, Bioelectromagnetic Fields Computation, Education, not to speak of the countless Devices and Applications. The Digest review procedure was comprised of three stages. The Editorial Board Chairs invited more than 30 qualified experts in the above fields to become members of the CEFC 2020 Editorial Board (Track Chairs). In order to review the 838 submitted digests, each Track Chair coordinated the review process for no more than 30 digests, by utilizing the nearly 300 selected reviewers in our database or asking for the cooperation of well-recognized scholars when needed. We assigned each digest to three or more reviewers, each selected on the base on her/his expertise. We took care to avoid any reviewer receiving more than 12 digests, to guarantee accurate evaluations. Each digest received at least two peer reviews to determine its suitability for inclusion in the conference program, and at least three in case of conflicting reviews. The reviewers completed a detailed report for each submission, including an evaluation of the contribution and an integer score, ranging from 11 to 95 in the case of CEFC2020 digests, for relevance, originality, quality and significance of results, language clarity, and technical presentation. Following this peer review process, we accepted 509 digests, and asked minor corrections to other 278 digests. After a second round of reviews, we allowed a total of 590 digests, between the highest scored ones. The accepted digests represent a 70% acceptance rate. The accepted digests will be presented at the conference in oral or poster format and will be available to all conference registrants in the conference record. An assessment of the reviewers’ and Track Chairs’ work allowed to establish that 97% of reviews were submitted by the deadline, and a fair 5 CEFC 2020, PISA, ITALY 67% well in advance, and that Track Chairs actively coordinated the process, issuing review invitations to external scholars where specific competencies were not available in the reviewers’ pool, and finally suggesting us a decision about each digest. We certainly hope that the conference attendees will find our technical program as stimulating and of such high quality as we think it is. Extended versions of the accepted digests will be submitted by authors on Manuscript Central peer review site of the IEEE Transactions on Magnetics. The papers will undergo the standard IEEE Transactions review process. Following the new IEEE editorial policy for IEEE conferences, we expect that 30% of these submitted extended versions will be accepted for publication in the IEEE Transactions on Magnetics. The rest of the extended versions of the papers will undergo editorial review and will be published in IEEE Xplore With CEFC2020 organization successfully completed, we would like to renovate our sincere gratitude to every participant, reviewer and Editorial Board member and all authors whose high-level contributions guaranteed