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Keynote & DL Talks



Professor Weng Cho Chew
Distinguished Professor of
ECE, Purdue University
Member of U.S. NAE
IEEE Fellow
 

Title: Computational Electromagnetics after Quantum Computer


Abstract:

The recent advent of quantum computer is an exciting milestone in quantum technologies development. It has taken us 70 years to go from vacuum computers to the cell phone computers of nowadays. It will be interesting to see similar development for quantum computers.

In this talk, we will summarize the challenges faced by modern quantum computers. We will discuss how computational electromagnetics (CEM) can help in the development of future quantum computers. First, we will review modeling of quantum effects in electromagnetics. Then we will outline how computational electromagnetics could be used to model and include these quantum effects. We will also discuss recent advances in CEM that could be useful for improving quantum computing technologies.


Biography:

W.C. Chew received all his degrees from MIT. His research interests are in wave physics, specializing in fast algorithms for multiple scattering imaging and computational electromagnetics in the last 30 years. His recent research interest is in combining quantum theory with electromagnetics, and differential geometry with computational electromagnetics. After MIT, he joined Schlumberger-Doll Research in 1981. In 1985, he joined U Illinois Urbana-Champaign, was then the director of the Electromagnetics Lab from 1995-2007. During 2000-2005, he was the Founder Professor, 2005-2009 the YT Lo Chair Professor, and 2013-2017 the Fisher Distinguished Professor. During 2007-2011, he was the Dean of Engineering at The University of Hong Kong. He joined Purdue U in August 2017 as a Distinguished Professor. He has co-authored three books, many lecture notes, over 400 journal papers, and over 600 conference papers. He is a fellow of various societies, and an ISI highly cited author. In 2000, he received the IEEE Graduate Teaching Award, in 2008, he received the IEEE AP-S CT Tai Distinguished Educator Award, in 2013, elected to the National Academy of Engineering, and in 2015 received the ACES Computational Electromagnetics Award. He received the 2017 IEEE Electromagnetics Award. In 2018, he served as the IEEE AP-S President.



Professor Yahya Rahmat-Samii
Distinguished Professor of
University of California
Member of U.S. NAE
IEEE Fellow
 

Title: Mars Call Earth: A Novel Array Antenna Design for Future Planetary Missions


Abstract:

The author would like to thank the organizers for inviting him to present a plenary talk in this conference. The presentation is based on some of the work detailed in the author’s several papers and the author would like to acknowledge his collaborators. With the recent deployment of larger rovers such as Curiosity, high-performance DTE (Direct to Earth) communication links are now considered a viable link for future Mars missions. Designing novel antennas with higher gain and power handling would enable greater flexibility and higher data rates. First an overview of requirements for such a mission is provided and then potential novel antenna architectures will be highlighted.

Among variety of antenna concepts evaluated, novel multi-tile array antenna architectures have been considered for future Mars Rover Missions. The concept could also be of interest for other planetary missions requiring DTE. In this presentation, we will revisit the construction of the CP Half E-shaped patch antenna for operating at both Tx/Rx X-bands. The dual-band capability (impedance match and axial ratio) of the CP Half E-shaped patch element will be one of the main focuses of our novel design. This element utilizes the CP Half E-shaped element’s compact size, approximately 50% size reduction from its full E-shaped element counterpart. Application of advanced natured inspired optimization techniques are discussed for the selection of the best optimal design. The CP Half E-shaped patch element allows the application of a single-feed and single-layer by considerably reducing the fabrication complexity in the X-band. In the subarray design, a stripline feed network is used to avoid spurious and unwanted radiation. Additionally we will discuss how each of the individual components is integrated, simulated, fabricated, and measured. It will be demonstrated that the desirable axial ratio (AR)-impedance matching (S11) bandwidths, good broadside radiation, and high directivity are achieved. Utilization of the array tile and its integration into a larger array will also be highlighted.


Biography:

Yahya Rahmat-Samii is a Distinguished Professor, a holder of the Northrop-Grumman Chair in electromagnetics, a member of the U.S. National Academy of Engineering (NAE), the winner of the 2011 IEEE Electromagnetics Field Award, and the Former Chairman of the Electrical Engineering Department, University of California at Los Angeles (UCLA), Los Angeles, CA, USA. He was a Senior Research Scientist with the Caltech/NASA’s Jet Propulsion Laboratory. He has authored or coauthored more than 1000 technical journal articles and conference articles and has written over 35 book chapters and six books. He has more than 20 cover-page IEEE publication articles.

Dr. Rahmat-Samii is a Fellow of IEEE, AMTA, ACES, EMS, and URSI. He was a recipient of the Henry Booker Award from URSI, in 1984, which is given triennially to the most outstanding young radio scientist in North America, the Best Application Paper Prize Award (Wheeler Award) of the IEEE Transactions on Antennas and Propagation in 1992 and 1995, the University of Illinois ECE Distinguished Alumni Award in 1999, the IEEE Third Millennium Medal and the AMTA Distinguished Achievement Award in 2000. In 2001, he received an Honorary Doctorate Causa from the University of Santiago de Compostela, Spain. In 2001, he became a Foreign Member of the Royal Flemish Academy of Belgium for Science and the Arts, the Technical Excellence Award from JPL in 2002, the 2005 URSI Booker Gold Medal presented at the URSI General Assembly, the 2007 IEEE Chen- To Tai Distinguished Educator Award, the 2009 Distinguished Achievement Award of the IEEE Antennas and Propagation Society, the 2010 UCLA School of Engineering Lockheed Martin Excellence in Teaching Award, and the 2011 campus-wide UCLA Distinguished Teaching Award. He was also a recipient of the Distinguished Engineering Educator Award from The Engineers Council in 2015, the John Kraus Antenna Award of the IEEE Antennas and Propagation Society and the NASA Group Achievement Award in 2016, the ACES Computational Electromagnetics Award and the IEEE Antennas and Propagation S. A. Schelkunoff Best Transactions Prize Paper Award in 2017, and the prestigious Ellis Island Medal of Honor in 2019. The medals are awarded annually to a group of distinguished U.S. citizens who exemplify a life dedicated to community service. These are individuals who preserve and celebrate the history, traditions, and values of their ancestry while exemplifying the values of the American way of life and are dedicated to creating a better world. He has had pioneering research contributions in diverse areas of electromagnetics, antennas, measurement and diagnostics techniques, numerical and asymptotic methods, satellite and personal communications, human/antenna interactions, RFID and implanted antennas in medical applications, frequency-selective surfaces, electromagnetic band-gap structures, applications of the genetic algorithms, and particle swarm optimizations. His original antenna designs are on many NASA/JPL spacecrafts for planetary, remote sensing, and Cubesat missions.

He is the Designer of the IEEE AP-S logo which is displayed on all IEEE AP-S publications. He was the 1995 President of the IEEE Antennas and Propagation Society and 2009–2011 President of the United States National Committee (USNC) of the International Union of Radio Science (URSI). He has also served as an IEEE Distinguished Lecturer presenting lectures internationally.



Professor Tie Jun Cui
Chief Professor of
Southeast University
Academician of CAS
IEEE Fellow
 

Title: Information Metasurface - Bridging the Digital World and Physical World


Abstract:

Computational electromagnetics is an efficient tool for people to know the world of electromagnetic physics, which is also the basis to analyze, design, and realize the electromagnetic devices to transmit, control, and receive the electromagnetic waves for a wide range of applications. In the application of information systems (e.g. radar and wireless communications), the electromagnetic wave is the carrier of digital information. The digital signals must be firstly converted to analog signals, and the analog signals are then mixed to the microwave frequency, to be transmitted to far regions by the electromagnetic waves. Thus, in the current information systems, the digital signal processing and electromagnetic physics are separated, and studied by two different communities.  

Metamaterials are arrays of artificial meta-structures in either periodic or nonperiodic fashions. Traditionally, the metamaterials are described by continuously effective medium parameters due to the subwavelength scale of the meta-particles. The ability of metamaterials in achieving arbitrary values and distributions of effective medium parameters makes it possible to control and manipulate the electromagnetic physics world freely. Recently, we propose the concept of digital coding metamaterials, which are characterized by digital coding particles (e.g. 0 and 1 with 180° phase difference for 1-bit coding; 00, 01, 10, and 11 with 90° phase difference for 2-bit coding, …). It was demonstrated that the electromagnetic waves can be manipulated by changing the digital coding sequences. The coding particles provide a link between the physical world and digital world, leading to digital metamaterials and even field programmable metamaterials, which can be used to control both electromagnetic waves and digital information in real time. The digital coding representation of metamaterials allows the concepts and signal processing methods in information science to be introduced to the physical metamaterials, such as Shannon entropy, convolution theorem, and addition theorem. These studies set up the foundation of information metamaterials, which bridge the physical world and digital world to realize new information systems.


Biography:

Tie Jun Cui received the B.Sc., M.Sc., and Ph.D. degrees in electrical engineering from Xidian University in 1987, 1990, and 1993, respectively. In March 1993, he joined in the Department of Electromagnetic Engineering, Xidian University, and was promoted to Associate Professor in November 1993. From 1995 to 1997 he was a Research Fellow with the Institut fur Hochstfrequenztechnik und Elektronik (IHE) at the University of Karlsruhe, Germany. In July 1997, he joined in the Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, first as a Postdoc and then a Research Scientist. In September 2001, he became Cheung-Kong Professor in the Department of Radio Engineering, Southeast University, Nanjing, China. He is now the Chief Professor of Southeast University. Dr. Cui is an Academician of CAS (Chinese Academy of Sciences). His research interests include metamaterials and computational electromagnetics.

Dr. Cui authored two books, published over 400 peer-review journal papers, which have been cited by more than 25000 times (H-Factor 79; from Google Scholar), and licensed over 70 patents. He received the Natural Science Award (the first class) from the Ministry of Education, China, in 2011, and the National Natural Science Awards (the second class, twice) in 2014 and 2018, respectively. His researches have been selected as one of the “10 Breakthroughs of China Science in 2010”, “Best of 2010” in New Journal of Physics, and “Optics in 2016” by OSA, and has been reported by Nature News, Science, MIT Technology Review, Scientific American, New Scientists, etc. Dr. Cui is an IEEE Fellow.



Professor David Davidson
Director, Engineering: ICRAR
Curtin University
AP-S Distinguished Lecturer
IEEE Fellow
 

Title: Design and Simulation of Aperture Arrays for Radio Astronomy: the SKA-LOW Telescope


Abstract:

In radio astronomy, an aperture array is a phased array with a direct view of the sky (as opposed to a phased array feed). Work towards the Square Kilometre Array (SKA)-LOW radio telescope, which covers much of the VHF radio band, has prompted extensive research on such systems over the last two decades, including the MWA and LOFAR telescopes. Design considerations and aspects of the SKA-LOW telescope, to be deployed in Western Australia, will be outlined. Presently, each of the 512 SKA-LOW “stations” is to comprise 256 dual-polarized log-periodic “SKALA” antennas, deployed on a ground mesh in a semi-random layout with a maximum antenna-boom-to-boom diameter of 38 m. This paper will describe in some detail the numerical modelling of station patterns using embedded element patterns, which fully capture the complex mutual coupling environment of each antenna. In particular, simulations using the Method of Moments with MLFMM acceleration using two different tools, FEKO and IDS, will be discussed. Current results will be shown, as well as measured results using on-site drone metrology. The implications for SKA-LOW will conclude the paper.


Biography:

Professor David Bruce Davidson is a Fellow of the IEEE. He received the B.Eng, B.Eng (Hons), and M.Eng degrees (all cum laude) from the University of Pretoria, South Africa, in 1982, 1983, and 1986 respectively, and the Ph.D. and D.Eng. degrees from Stellenbosch University, South Africa, in 1991 and 2017 respectively. From 1985 to 1988 he was with the Council for Scientific and Industrial Research, Pretoria, South Africa. From 1988 until 2017, he was with Stellenbosch University, South Africa; from 2011-17, he held the South African Research Chair in Electromagnetic Systems and EMI Mitigation for SKA there and was also a Distinguished Professor. As of 2018, he joined Curtin University, Perth, Western Australia, where he is presently Engineering Director of the Curtin Institute of Radio Astronomy, and holds the Chair of Radio Astronomy Engineering.

He has held a number of visiting appointments, including at the University of Arizona (1993); Cambridge University, UK (1997); Delft University of Technology, The Netherlands (2003); and the University of Manchester, UK (2009).

Prof Davidson’s main research interest through most of his career has been computational electromagnetics (CEM) and its applications in RF and microwave engineering, and he has published extensively on this topic. He was also closely involved in the development of FEKO, a widely-used EM simulation tool. In recent years, his interests have expanded to include engineering electromagnetics for radio astronomy. He has authored around 250 technical journal articles and conference papers in the areas of computational electromagnetics, high-performance computing, antenna design, electromagnetic compatibility and radio astronomy. He is the author of "Computational Electromagnetics for RF and Microwave Engineering" (Cambridge Univ. Press, 1st ed, 2005, 2nd ed., 2011), and he is a co-author of "Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications" (Cambridge Univ. Press, 2018).

Prof. Davidson is registered as a Professional Engineer with the Engineering Council of South Africa. He was a recipient of the South African FRD (now NRF) President’s Award in 1996. He received the Rector's Award for Excellent Research from Stellenbosch University in 2005. He received the inaugural IEEE-SAIEE Joint Distinguished Award for 2014. He has been actively involved with various IEEE activities; he served on the IEEE Antennas and Propagation AdCom (2011-'13); he was Chair of the local organizing committee of ICEAA’12-IEEE APWC-EEIS’12, held in Cape Town in September 2012; he was an associate editor of the IEEE Antennas and Propagation Magazine from 1999-2017, and is currently an associate editor of the IEEE Transactions on Antennas and Propagation. He served on the (South African) Astronomy Advisory Council from 2014-2017.


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