Research Career 【 display / non-display 】

Research Career 【 display / non-display 】

• Study of Microwave Measurement

  Project Year：  -   

• Study of Antenna

  Project Year：  -   

• Study of Mobile Communication

  Project Year：  -   

Books 【 display / non-display 】

Books 【 display / non-display 】

• Latest Developments in Electromagnetic Wave Absorbers and Shielding Materials -Design and Performance Enhancement for 5G-

  (Part： Joint Work )

  2020.07 ISBN: 978-4-7813-1513-3

• Sustainable Energy Harvesting Technologies - Past, Present and Future

  Chomora Mikeka, Hiroyuki Arai (Part： Joint Work , Range: Design Issues in Radio Frequency Energy Harvesting System )

  InTech  2011.12 ISBN: 978-953-307-438-2

• Handbook of Antennas in Wireless Communications

  (Part： Joint Work )

  CRC Press  2001.06

• Measurements of Mobile Antenna Systems

  (Part： Single Work )

  Artech House  2001.02

Thesis for a degree 【 display / non-display 】

Thesis for a degree 【 display / non-display 】

• A study of microwave circuits for RF heating in large tokamaks

  新井　宏之 

    1987.03

  Doctoral Thesis   Single Work

  　View Summary

  東京工業大学　理工学研究科　電子物理工学専攻 核融合大型トカマク中のプラズマを電磁波加熱するために必要な，電磁波の伝送系に挿入される真空窓の理論的解析と，プラズマとの結合効率を改善する結合器についていくつかの候補を提案し，その特性を明らかにした。

• 核融合プラズマ加熱用電磁波結合系の研究

  新井　宏之 

    1984.03

  Master Thesis   Single Work

  　View Summary

  東京工業大学　理工学研究科　電子物理工学専攻 核融合大型トカマク中のプラズマを電磁波加熱するために必要な，カットオフ導波管結合器を提案し，その特性を明らかにした。

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Optical high-gain leaky-wave antenna by using a waffle-iron waveguide

  Kaneoka Shunichi, Iida Wataru, Hashiguchi Hiroshi, Baba Toshihiko, Arai Hiroyuki

  IEICE Electronics Express ( 一般社団法人 電子情報通信学会 )  18 ( 1 )   20200411-1 - 20200411-4   2021.01  [Refereed]

  Joint Work

  　View Summary

  <p>This paper presents a comparison of optical leaky-waveguide antennas, i.e., grating waveguide (GWG), waffle waveguide (WWG), and waffle-iron waveguide (WIWG), using both simulations and measurements. WIWG radiates a narrow beam that is tilted by sweeping the incident wavelength, and it possesses a higher antenna gain than GWG and WWG under the same fabrication condition. The reason is due to a slight difference in the effective index along the longitudinal sections, which provides a large aperture size for high antenna gain. We simulate the antenna characteristics and experimentally confirm the high antenna gain.</p>

  DOI CiNii

• Thin AMC substrate by applying square patch with semicircle notch

  Shinozaki Ryota, Tamura Jo, Arai Hiroyuki

  IEICE Communications Express ( 一般社団法人 電子情報通信学会 )    2021

  Joint Work

  　View Summary

  <p>This paper presents a method of thinning an Artificial Magnetic Conductor (AMC) substrate by applying the semicircle notch to the square patch. We analyze the reflection characteristics by changing the arc length of the semicircle. As a result, the frequency where a Perfect Magnetic Conductor (PMC) characteristics appears is shifted to the lower side as the arc length of the semicircle increases. It is confirmed that the proposed method is thinning the AMC substrate thickness about 15% compared with the AMC that has no semicircle notch. Furthermore, it was experimentally confirmed that the thin AMC substrate was thinning by semi-circle notch.</p>

  DOI CiNii

• Influence of concrete on patch antennas on small ground plane

  Takato Shota, Arai Hiroyuki

  IEICE Communications Express ( 一般社団法人 電子情報通信学会 )    2021

  Joint Work

  　View Summary

  <p>In order to deploy a lot of 5G base stations, there is a method of installing them on utility poles and building walls. In this paper, antennas installed on them for 5G base stations are investigated numerically and experimentally. We examine the minimum ground plane size to remove the influence of concrete and embedded reinforced bars. We also verify the effects on the input characteristics and radiation pattern by measurement.</p>

  DOI CiNii

• Gain Enhancement of Optical Leaky wave Antenna Excited by Parabolic reflector with Photonic crystal

  Sugaya Satoshi, Iida Wataru, Arai Hiroyuki

  IEICE Communications Express ( 一般社団法人 電子情報通信学会 )    2021

  Joint Work

  　View Summary

  <p>This paper presents gain enhancement of leaky wave antenna by parabolic reflector of photonic crystal. A leaky wave antenna has been proposed as an antenna for optical wireless communication. This antenna is excited by a parabolic reflector made of photonic crystals. This excitation method is very compact, resulting in some insertion loss. To improve the drawback, we propose a new reflector combined by photonic crystals and glass layer.</p>

  DOI CiNii

• Compact Null Steering Antenna With Two Parasitic Elements for Angle-of-Arrival Estimation

  Tamura Jo, Arai Hiroyuki

  IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS ( Institute of Electrical and Electronics Engineers ({IEEE}) )  19 ( 7 )   1123 - 1126   2020.07  [Refereed]

  Joint Work

  Web of Science DOI

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Review Papers 【 display / non-display 】

Review Papers 【 display / non-display 】

• Antenna Technologies:Development for Specification of Wireless Communication

  The journal of the Institute of Electronics, Information and Communication Engineers   99 ( 8 ) 799 - 804   2016.08

  Introduction and explanation (scientific journal)   Single Work

• The history of the technology development and future prediction

    ( 13 ) 1 - 5   2013.03

  Introduction and explanation (commerce magazine)   Single Work

• Small Antennas: Downsizing Techniques and Its Index Factor

  Trans. IEICE Japan   E88-B ( 5 ) 1801 - 1808   2005.05

  Introduction and explanation (others)   Single Work

  　View Summary

  和文　"小形アンテナ：小形化手法とその評価法," 電子情報通信学会論文誌, vol. J87-B, no. 9, pp.1140-1148, 2004年9月.

Academic Awards Received 【 display / non-display 】

Academic Awards Received 【 display / non-display 】

• Best Paper Award Third Prize

  2018.10.25   2018 International Symposium on Antennas and Propagation (ISAP 2018)   Far Field from Hemispherical Near Field Measurements for Vehicular Mounted Antenna

  Winner： BASIKOLO THOMAS, HIROYUKI ARAI, SATOSHI HORI,SHINYA IWANAGA

  　View Summary

  BASIKOLO THOMAS, HIROYUKI ARAI Best Paper Award Third Prize 2018 International Symposium on Antennas and Propagation (ISAP 2018) "Far Field from Hemispherical Near Field Measurements for Vehicular Mounted Antenna" 2018/10/25

• IEEE International Conference on RFID-Technology and Applications presents Third Prize for the Best Paper Award

  2011.09.16    

• 2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmisson presents The Best Paper Award Silver

  2011.05.12    

• The 4th International Conference on Electromagnetic Near-Field Characterization and Imaging presents the Second Prize Award

  2009.06    

• IEICE Communications Society presents the Best Letter Award

  2007.09    

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Optical High-Gain Leaky-Wave Antenna by Using a Waffle-Iron Waveguide

  International Symposium on Antennas and Propagation (ISAP2020)  2021.01.25  

• Influence of concrete on patch antennas installed on utility poles

  International Symposium on Antennas and Propagation (ISAP2020)  2021.01.25  

• Thinning AMC substrate applying square patch with semicircle

  International Symposium on Antennas and Propagation (ISAP2020)  2021.01.25  

• Beam-tilted reflectarray antenna with primary radiator offset

  International Symposium on Antennas and Propagation (ISAP2020)  2021.01.25  

• Gain Enhancement of Optical Leaky wave Antenna Excited by Photonic Bandgap Parabolic reflector with Thin Glass Layer

  International Symposium on Antennas and Propagation (ISAP2020)  2021.01.25  

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