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Antennas and EM Field Manipulation from Various Transformation Techniques
时间:2019-08-16 17:15    点击:   所属单位:电子工程学院
讲座名称 Antennas and EM Field Manipulation from Various Transformation Techniques
讲座时间 2019-08-22 10:00:00
讲座地点 西安电子科技大学北校区主楼3区201学术报告厅
讲座人 Yang Hao
讲座人介绍
Yang Hao is Dean for Research in the Faculty of Science and Engineering, and Professor of Antennas and Electromagnetics, Queen Mary University of London. He was a director and PI of £5M EPSRC QUEST Programme Grant during 2011-2017. He also serves in the management team of Cambridge Graphene Centre since 2013. He is active in a number of areas, including computational electromagnetics, microwave metamaterials and transformation optics, antennas and radio propagation for body centric wireless networks, graphene and nanomicrowaves, active antennas for millimeter/sub-millimeter applications and photonic integrated antennas. He co-published two books: “Antennas and Radio Propagation for Body-Centric Wireless Communications”, and “FDTD modelling of Metamaterials: Theory and Applications”. He has published more than 200 journal papers and is a frequent keynote speaker for many conferences. Prof. Hao was the Editor-in-Chief for the IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS. He founded a new open access journal and is now the Editor-in-Chief of EPJ Applied Metamaterials. He won 2015 IET AF Harvey Research Prize and is a co-recipient of BAE Chairman’s Silver Award in 2014. He currently holds the Royal Society Wolfson Research Merit Award. Prof. Hao is a elected Fellow of the ERA Foundation, IET and IEEE.
讲座内容
Effectively manipulating electromagnetic (EM) waves plays an important role in many modern technological innovations ranging from Marconi's first transatlantic wireless transmission through Sir Henry Tizard's radar to modern cellular communications. Now enabled with two recent developments - transformations optics and the design and fabrication of novel electromagnetic materials, antenna engineers have been equipped with new design tools which provide entirely fresh solutions to classical problems restricted by fundamental physics, and enable new ways to manipulate the radiation, propagation and absorption of EM waves.
This talk presents a review of some current work conducted at Queen Mary University of London, related to metamaterials and nanomaterials such as graphene for RF/Microwave and THz applications. I will start with the introduction of Transformation Optics, a new paradigm for EM design, providing equivalent material properties through a well-chosen change of coordinates, in order to achieve unprecedented wave manipulation. This is essential for the development of conformal antennas or flat panel antennas for both SATCOM and aerospace applications. Along the way, design challenges of new functional materials, especially, understanding the role of ordered and disordered particles in a host media will be discussed as they are scientifically and technologically important in order to achieve superior spectral and angular properties. An efficient numerical technique, which is capable of modelling more than 20,000 plasmonic nanoparticles, will be introduced. Furthermore, I will present the theory of hyperuniformity and some intriguing applications in the design of materials with randomly dispersed particles. I will demonstrate that a Luneburg lens based on the proposed hyperuniform media has superior radiation properties and it will open up a new avenue in electromagnetic materials-by-design.
Finally, with the advent of nanotechnologies, the possibility to explore the interactions of microwaves with much smaller objects (micrometres to nanometres) is emerging as an exciting field of research and technology development. In this talk, recent development of nanomicrowave devices such as the near field microwave spectroscopy, and graphene components will be presented together with simulation and measurement results.
电子工程学院          天线与微波技术国家重点实验室
国际合作与交流处         IEEE AP/MTT Xi’an Chapter

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