| IEEE AP-S Fukuoka Chapter 特別講演 |
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| 主催 | 電子情報通信学会九州支部 |
| 共催 | IEEE AP-S Fukuoka Chapter |
| 協賛 | IEICE アンテナ・伝播研究会 |
| 講演テーマ | Antenna Technologies for Next Generation Telecommunications
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| 概要 | 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(TA)，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．
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| 講演1 |
| 講演者 | Prof. Kwai Man Luk (City University of Hong Kong) |
| 題目 | Design of Wideband Reflectarrays and Transmitarrays of Magnetoelectric Dipole Antennas |
| 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 |
| 講演者 | Prof. Hang Wong (City University of Hong Kong) |
| 題目 | Functional-Material Integrated High-Frequency Devices for Millimeter-wave and Terahertz Applications |
| 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. |
| 日時 | 2023年9月6日(水) 14:30-17:00 |
| 場所 | 熊本大学 黒髪南W3(共用棟黒髪1) 1F
https://www.kumamoto-u.ac.jp/campusjouhou/map_kurokami_2
(50番の建物)
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| 問い合わせ先 | 福迫 武 (熊本大学, fukusako＠cs.kumamoto-u.ac.jp) |
