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題目:Antenna Technologies for Next Generation Telecommunications
（主催：IEICE 九州支部，共催:IEEE AP-S Fukuoka Chapter, 協賛:IEICE
アンテナ・伝播研究会)
アンテナ・伝搬技術の研究分野においてリフレクトアレー(RA)，トランスミットアレーA)，ビーム等の可変型デバイスが注目されています．今回，香港城市大学テラヘルツ・ミリ波国家重点研究所で開発された最先端のアンテナ技術について，Kwai
Man Luk先生とHang Wong先生の２名より講演していただくことになりました．お二人はマグネットエレクトリック(ME)ダイポール
アンテナの考案者として良く知られております．
まず，Kwai Man Luk先生よりMEダイポールがRA,
TA設計においても魅力的であることを述べていただき，高利得でビームステアラブルなRA, TA設計について概説していただきます.
さらにHang Wong先生より機能性材料を用いたミリ波やテラヘルツの可変型，スイッチ型のデバイスの設計例を紹介していただきます．
日時：9月6日（水）14:30-17:00
場所：熊本大学 黒髪南地区 共用棟(黒髪南W3) 1F 講義室
www.kumamoto-u.ac.jp/campusjouhou/map_kurokami_2
５０番の建物
講演1: Design of Wideband Reflectarrays and Transmitarrays of
Magnetoelectric Dipole Antennas
講師1: Prof. Kwai Man Luk (City University of Hong Kong)
講演2: Functional-Material Integrated High-Frequency Devices for
Millimeter-wave and Terahertz Applications
講師2: Prof. Hang Wong (City University of Hong Kong)
講演1 概要
The magnetoelectric (ME) dipoles have been successfully developed for
mobile communications, radars and sensing connectivity with many
distinguished features including wide bandwidth, low cross
polarization, low back radiation and stable gain and beamwidth over
the operating frequencies. Recently, it has been demonstrated that the
ME dipoles are also attractive for the design of reflectarrays (RA)
and transmitarrays (TA) that are of topical interest in the antenna
community. In this talk, design of high-gain, beam-steerable
reflectarrays and transmitarrays operating at microwaves and
millimeter waves based on the ME dipoles will be reviewed. First, the
basic operating principles of ME dipole, RA and TA are introduced.
Next, the ME-diole-based TRA and TA designs are discussed, with a few
samples presented in details, including fixed-beam designs with high
aperture efficiency and reconfigurable designs with wide-angle
scanning capability. It will be demonstrated that the use of ME
dipoles instead of conventional microstrip antennas can significantly
enhance the bandwidth of the antenna arrays. Possible future work will
also be shared.
講演 2 概要
Technology market forecasts high-frequency products will boost up
rapidly in the coming decades not only the popular microwave
electronics but also that of unreleased millimeter-wave and terahertz
inventions. Scientists put hard efforts to demonstrate both
feasibility and capability of the new allocated frequency spectrum by
ITU from 110 to 450 GHz that can be commercialization through the
introduction of emerging applications of wireless systems such as 6G
communications, terahertz imaging, millimeter-wave detection and
sensing, low-orbit space communications, intelligent ultra-fast
wireless, green energy network, etc. In this talk, the speaker is
going to introduce recent high-frequency electronic developments by
other world-leading antenna research groups and share state-of-the-art
antenna technologies invented at the State Key Laboratory of Terahertz
and Millimeter Waves, City University of Hong Kong. Breaking through
the bottleneck of PIN diode at high-frequency devices, the speaker
will demonstrate some examples of using functional materials to design
millimeter-wave and terahertz reconfigurable, tunable, and switchable
devices including antennas, metasurfaces, polarizers, modulators, and
filters.
講師紹介 1
Prof.Kwai Man Luk (Fellow, IEEE) received the B.Sc. and Ph.D. degrees
in electrical engineering from The University of Hong Kong, Hong Kong,
in 1981 and 1985, respectively.,He joined the Department of
Electronic Engineering, City University of Hong Kong, Hong Kong, in
1985, as a Lecturer. Two years later, he moved to the Department of
Electronic Engineering, The Chinese University of Hong Kong, Hong
Kong, where he spent four years. In 1992, he returned to the City
University of Hong Kong, where he served as the Head for the
Department of Electronic Engineering from 2004 to 2010, and the
Director for the State Key Laboratory of Millimeter Waves from 2008 to
2013, and is currently the Acting Head and the Chair Professor of the
Department of Electrical Engineering. His recent research interests
include designs of microstrip patch antennas, magneto-electric dipole
antennas, dense dielectric patch antennas, and open resonator
antennas.,Prof. Luk is a fellow of the U.K. Royal Academy of
Engineering; the Hong Kong Academy of Engineering Science; the Chinese
Institute of Electronics, China; the Institution of Engineering and
Technology, U.K.; and the Electromagnetics Academy, USA. He was the
Chief Guest Editor of a special issue on “Antennas in Wireless
Communications” published in the Proceedings of the IEEE in July 2012
and a special issue on “Advanced Antennas for Wireless Connectivity”
published in Engineering. He is the Deputy Editor-in-Chief of
Photonics and Electromagnetics Research Symposium (PIERS) journals and
an Associate Editor of IET Microwaves, Antennas and Propagation
講師紹介 2
Prof. Hang Wong received a Ph.D. degree from City University of Hong
Kong in 2006. He joined the Department of Electrical Engineering in
2012 and is currently an Associate Professor and the Deputy Director
of the State Key Laboratory of Terahertz and Millimeter Waves. He had
several visiting professorships at Stanford University, USA;
University of Waterloo, Canada; University of College London, UK; and
University of Limoges, France in 2011, 2013, 2014, and 2015
respectively. His research interests include designs of wideband
antennas, reconfigurable antennas, millimeter-wave antennas, terahertz
antennas, functional-material antennas and related applications. He
has published over 280 papers, 30 patents, and 2 book chapters, with
Google citations of 7000+ and an H-index of 47. He is the chair of the
IEEE Antennas and Propagation /Microwave Theory and Techniques (MTT)
Chapter of Hong Kong, the IEEE APS Region-10 Representative, the
associate editor of IEEE Transactions on Antennas and Propagation
(TAP), and the associate editor of IEEE Antenna Wireless Propagation
Letters (AWPL). Dr. Wong was the general co-chair of 2020 Asia Pacific
Microwave Conference; and the general chair of 2021 Cross Strait Radio
Science and Wireless Technology Conference. His contribution has been
highly recognized by numerous technical awards and best paper awards
at the international conferences at the countries of USA, UK, France,
Korea, Japan, and China. He pioneered and was a co-inventor of L-probe
dual-polarization antenna technology in 2004, magneto-electric antenna
technology in 2006, and the first generation of Beidu’s handheld
antennas in 2008, thin-intelligent antenna in 2013,
reconfigurable-metal-liquid antenna in 2018, and
programmable-terahertz meta in 2020. Parts of his antenna inventions
were adopted by industry leaders to satellite navigation system,
wireless sensing network, 5G MIMO base-stations, and auto-payment
systems for vehicles. He was awarded the top 2% most-cited scientist
by Stanford University in 2021 and 2022.
問い合わせ：
福迫 武（熊本大学）
E-mail: fukusako@cs.kumamoto-u.ac.jp
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