[Japanese/English]

Research

List of Papers (Takuichi Hirano)

Some contents are in Japanese.


Period Themes
1997-Present Basic Theory of Electromagnetics and Microwave Engineering
[Journal Papers]
  1. T. Hirano, "Equivalence Between Orbital Angular Momentum (OAM) and Multiple-Input Multiple-Output (MIMO) in Uniform Circular Arrays - Investigation by Eigenvalues -," Microwave and Optical Technology Letters (MOP), Vol.60, No.5, pp.1072-1075, DOI: 10.1002/mop.31111, May 2018.
  2. T. Hirano, "Relationship between Q factor and complex resonant frequency: investigations using RLC series circuit," IEICE Electronics Express, Vol.14, No.21 pp.20170941, Nov. 2017. (Open Access)
  3. T. Hirano, "Review and Another Derivation of the Power Wave," Microwave and Optical Technology Letters (MOP), Vol.57, No.1, pp.26-28, DOI: 10.1002/mop.28766, January 2015. (Open Access)
  4. T. Hirano, J. Hirokawa, M. Ando, "Errors in Shortened Far-Field Gain Measurement Due to Mutual Coupling," IEEE Transactions on Antennas and Propagation, vol.62, no.10, pp.5386-5388, Oct. 2014. (Open Access)
[Books & Articles]
  1. 安藤 真, 平野拓一, "寄書:電磁気学のための導入教育―CGと数値計算の活用―,"電子情報通信学会誌, Vol.99, No.9, pp.939-942, 2016年9月.
  2. 平野拓一, 線状・板状アンテナ, 電子情報通信学会『知識の森』(http://www.ieice-hbkb.org/), 4 群-2 編-4 章, 2013年1月.
  3. 浅田雅洋・平野拓一, 電磁気学, 培風館, 東京, 2009年11月.
  4. アンテナ・無線ハンドブック, オーム社, pp.17-41 (I編-3章、4章分担), 2006年10月.
2012-Present Electromagnetic Simulation Techniques and Education
[Journal Papers]
  1. 平野 拓一, "電磁界シミュレータ利用の勘所 ―境界条件と励振モデル―," 電子情報通信学会論文誌 C, Vol.J**-C, No.*, pp.***-***, * 2018. (招待論文)
  2. T. Hirano, J. Takada, "Dual-Band Printed Inverted-F Antenna with a Nested Structure," Progress In Electromagnetics Research Letters, Vol. 61, pp.1-6, 2016.
  3. T. Hirano, J. Hirokawa and M. Ando, "Influence of the SMA Connector and Its Modeling on Electromagnetic Simulation," Microwave and Optical Technology Letters (MOP), Vol.57, No.9, pp.2168-2171, DOI: 10.1002/mop.29304, September 2015.
[Books & Articles]
  1. 橋口 真宜, 藤井 知, 平野 拓一, 坂東 弘之, "COMSOL Multipysicsによる計算科学工学- 波動系(5)," 日本計算工学会誌, Vol.23, No.2, pp.20(1)-20(9), 2018.
  2. 平野 拓一(分担), 4.3節: 有限要素法を用いた電磁界解析技術日、磁性材料・部品の最新開発事例と応用技術、技術情報協会, 2018年3月.
  3. 平野拓一, "電磁界シミュレータ利用の勘所," 電子情報通信学会誌, 小特集 電磁界シミュレーション技術の進展, Vol.100, No.5, pp.342-348, 2017年5月.
  4. 平野拓一, 平田晃正, "マイクロ波・ミリ波分野における実測困難な問題へのシミュレーション技術の応用,"電子情報通信学会誌, マイクロ波・光デバイス分野におけるシミュレーション技術の進展小特集, Vol. 96, No. 6, pp.401-405, 2013年6月.
2013-Present Antennas for Breast Cancer Detection Radar Imaging (Collaboration)
[Journal Papers]
  1. 平野 拓一, 吉川 公麿, 広川 二郎, 安藤 真, "人体検査用広帯域五角形パッチアンテナ," 電子情報通信学会論文誌 C, Vol.J99-C, No.8, pp.365-372, Aug. 2016. (招待論文; OpenAccess)
  2. 平野 拓一, 吉川 公麿, 広川 二郎, 安藤 真, "人体内部診断用アンテナ設計のための皮膚および脂肪の電磁界モデリング," 電子情報通信学会和文論文誌C, Vol.J98-C, No.12, pp.456-458, 2015年12月.
2011-2017 (Assistant Professor) Improvement of Radiation Efficiency in Millimeter-Wave Band On-Chip Antenna and its Simulation Techniques (JSPS Grant, Collaboration)
 

[Outputs]
  • Improvement of radiation efficiency by H or He ion irradiation
  • Analysis of effective material property of metal dummy fills using eigenmode analysis.
[Journal Papers]
  1. T. Hirano, N. Li, K. Okada, "Analysis of Effective Material Properties of Metal Dummy Fills in a CMOS Chip," IEICE Trans. Commun., Vol.E100-B, No.5, pp.793-798, May 2017.
  2. 矢尾 裕樹, 平野 拓一, 広川 二郎, 安藤 真, "材料への微細空孔生成による低損失化の電磁界シミュレーション, " 電子情報通信学会論文誌 C, Vol.J97-C, No.12, pp.535-541, Dec. 2014.
2009-2011 (Assistant Professor)  Application of Electromagnetic Simulation Technology to CMOS RF Circuit Design in Millimeter-Wave Band (Collaboration: STARC)



[Outputs]
  • De-embedding technique for intrinsic FET characteristic with the aid of electromagnetic simulation
  • Efficient electromagnetic simulation of metal dummy fills using effective material property. (Another application: Design of Ka band antenna in HAYABUSA2)
  • De-embedding technique of RF pad in a CMOS chip using Thru and Line patterns.
  • Electromagnetic simulation modeling for GSG probe measurements.
  • Electromagnetic simulation of millimeter-wave band on-chip antennas.
[Journal Papers]
  1. T. Hirano, K. Okada, J. Hirokawa, and M. Ando, "Electromagnetic simulation modeling of silicon substrate for 60 GHz on-chip differential-feed dipole antenna," Applied Physics Letters (APL), Vol.103, No.12, 122101, September 2013. [link (DOI: 10.1063/1.4821295)]
  2. T. Hirano, K. Okada, J. Hirokawa, and M. Ando, "Accuracy Investigation of De-embedding Techniques Based on Electromagnetic Simulation for On-wafer RF Measurements," InTech Open Access Book, Numerical Simulation - From Theory to Industry, ISBN 978-953-51-0749-1, Chapter 11, pp.233-258, September 19, 2012. [link (DOI: 10.5772/48431)] (Open Access)
  3. Yuya ONO, Takuichi HIRANO, Kenichi OKADA, Jiro HIROKAWA, and Makoto ANDO, "Eigenmode Analysis of Propagation Constant for a Microstrip Line with Dummy Fills on a Si CMOS Substrate," IEICE Trans. Electron., Vol.E94-C No.6, pp.1008-1015, June 2011.
  4. Takuichi Hirano, Hiroshi Nakano, Yasutake Hirachi, Jiro Hirokawa, and Makoto Ando, "De-Embedding Method Using an Electromagnetic Simulator for Characterization of Transistors in the Millimeter-Wave Band," IEEE Transactions on Microwave Theory and Techniques, Vol.58, No.10, pp.2663-2672, October 2010.

[International Conferences]

  1. R. Jayawardene, T. Nguyen, Y. Takano, K. Sakurai, T. Hirano, J. Hirokawa, M. Ando, O. Amano, S. Koreeda, T. Matsuzaki, "Estimation and Measurement of Cylindrical Wave Propagation in Parallel Plate with Honeycomb Spacer for the Use in mm-Wave RLSA," Proceedings of Asia-Pacific Microwave Conference (APMC), 3A4-03, pp.415-417, Kaohsiung, Taiwan, December 4-7, 2012.
2002-2005 (Research Associate)

1m2-Orderd Plasma Excitation Single-Layer Slotted Waveguide Array

[Journal Papers]

  1. Takuichi HIRANO, Kimio SAKURAI, Jiro HIROKAWA, Makoto ANDO, Tetsuya IDE, Atsushi SASAKI, Kazufumi AZUMA, and Yukihiko NAKATA, "Design of 1m2 Order Plasma Excitation Single-Layer Slotted Waveguide Array with Conducting Baffles and Quartz Glass Strips Using the GSM-MoM Analysis," IEICE Trans. Commun., Vol.E89-B, No.5, pp.1627-1635, May 2006.

[International Conferences]

  1. T. Hirano, J. Hirokawa, M. Ando, "GSM-MoM/FDTD Analysis for a Unit-Cell of 1m2-Orderd Slotted Waveguide Arrays with Equivalent Plasma Load and Array Design for Uniform Plasma Density Distribution," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Session: IF229.4, pp.2722-2725, Honolulu, Hawaii, USA , June 10-15, 2007.
  2. T. Hirano, J. Hirokawa, and M. Ando, "Unit-Cell Analysis of Plasma-Excitation Slotted Waveguide Arrays Using Measured Electron Density and Temperature," 2006 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2006), Session: SC2, Singapore, Nov. 1-4, 2006.
  3. T. Hirano, J. Hirokawa, and M. Ando, "GSM-MOM/FDTD Hybridization Analysis for a Unit-Cell of Plasma Excitation Slotted Waveguide Arrays," 2006 Korea-Japan Joint Conference (KJJC) on AP/EMCJ/EMT, P-AP-25, pp.133-136, Kanazawa, Japan, Sept. 23-24, 2006.
  4. T. Hirano, A. Nishikata, J. Hirokawa, M. Ando, "FDTD Analysis of S-Parameters for a Multi-Mode Waveguide with CW Excitation," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Session: 267.7, pp.1587-1590, Albuquerque, NM, USA, July 9-14, 2006.
  5. T. Suzuki, T. Hirano, J. Hirokawa, M. Ando, "Analysis of a Slotted Waveguide Array with Baffles in Terms of a Spectrum of Two-Dimensional Solutions," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Session: 483.3, pp.3913-3916, Albuquerque, NM, USA, July 9-14, 2006.
  6. Takuichi Hirano, Jiro Hirokawa, and Makoto Ando, "FDTD ANALYSIS OF A MULTI-MODE WAVEGUIDE WITH CW EXCITATION," 2005 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005), WC3-5, Vol.1, pp.201-204, Seoul, KOREA, August 3-5, 2005.
  7. Takehito Suzuki, John Young, Takuichi Hirano, Jiro Hirokawa, and Makoto Ando, "Analysis of a Waveguide Slot Antenna with Baffles Including Periodicity in the Transverse Direction," 2005 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005), POS-A-37, Vol.2, pp.717-720, Seoul, KOREA, August 3-5, 2005.
  8. Takuichi Hirano, Jiro Hirokawa, Makoto Ando, Tetsuya Ide, Atsushi Sasaki, Kazufumi Azuma, and Yukihiko Nakata, "Design of 1m2 Order Single-Layer Slotted Waveguide Array for Plasma Excitation Including the Effect of Vacuum Window Using the GSM-MoM Analysis," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Session:P65.5, Vol.3A, pp.712-715, Washington DC, USA, July 3-8, 2005.
  9. Takuichi Hirano, Jiro Hirokawa, Makoto Ando, Tetsuya Ide, Atsushi Sasaki, Kazufumi Azuma, and Yukihiko Nakata, "Method of Moments / Transmission Line Modeling for Plasma Excitation Single-layer Slotted Waveguide Arrays with Complicated Outer Baffles," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Session:86, Vol.3, pp.2372-2375, Monterey, CA, June 20-26, 2004.
  10. Takuichi Hirano, Yusuke Nakano, Makoto Ando, Masashi Goto, Atsushi Sasaki, Tetsuya Okamoto, Kazufumi Azuma, and Yukihiko Nakata, "1m2 Order Single-Layer Slotted Waveguide Arrays for Plasma Excitation," 2003 IEEE Topical Conference on Wireless Communication Technology, Session 23, p.06 (Hawaii, October 15-17, 2003)
1998-2002
(Graduate School)

 

Analysis and Design of Wavguide Crossed-Slot Array Antennas

[Journal Papers]

  1. Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "A Design of a Leaky Waveguide Crossed-Slot Linear Array with a Matching Element by the Method of Moments with Numerical-Eigenmode Basis Functions," IEICE Trans. Commun., Vol.E88-B, No.3, pp.1219-1226, March 2005.
  2. Miao ZHANG, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "Analysis of a Waveguide with a Round-Ended Wide Straight Slot by the Method of Moments Using Numerical-Eigenmode Basis Functions", IEICE Trans. Commun., Vol.E87-B, No.8, pp.2319-2326, Aug. 2004.
  3. Kaoru SUDO, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "A Radial Line Slot Antenna Fed by a Rectangular Waveguide through a Crossed Slot," IEICE Trans. Communication, Vol.E86-B, No.10, pp.3063-3070, October 2003.
  4. 平野拓一, 広川二郎, 安藤真, "方形導波管短絡導体板上ノッチ付リングスロットの数値固有モードを用いたモーメント法解析と設計," 電子情報通信学会論文誌 B, Vol.J86-B, No.9, pp.1870-1877, Sep. 2003.
  5. T. Hirano, J. Hirokawa, and M. Ando, "Waveguide matching crossed-slot," IEE Proceedings Microwave, Antennas and Propagation, Vol.150, No.3, pp.143-146, June 2003.
  6. T. Hirano, J. Hirokawa, and M. Ando, "Method of moments analysis of a waveguide crossed slot by using the eigenmode basis functions derived by the edge-based finite-element method," IEE Proceedings Microwave, Antennas and Propagation, Vol.147, No.5, pp.349-353, October 2000.

[International Conferences]

  1. M. Zhang, T. Hirano, J. Hirokawa, and M. Ando, "Analysis of a Waveguide Round-Ended Wide Straight Slot by the Method of Moments using Numerical-Eigenmode Basis Functions," Proceedings of 2004 URSI International Symposium on Electromagnetic Theory, Session 3.2, pp.664-666, Pisa, Italy, May 23-27, 2004.
  2. Miao ZHANG, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "Method of Moment Analysis of a Waveguide Round-Ended Wide Slot by using Numerical-Eigenmode Basis Functions," 2003 IEEE Topical Conference on Wireless Communication Technology, Session 23, p.07 (Hawaii, October 15-17, 2003)
  3. T. Hirano, J. Hirokawa, and M. Ando, "Design of a Waveguide Crossed-Slot Array with Matching Elements Using the Method of Moments with Numerical-Eigenmode Basis Functions," IEEE AP-S/URSI, Vol.3, pp.1046-1049, Session 121-5, Columbus, June 22-27, 2003.
  4. Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "A MOM ANALYSIS USING NUMERICAL ELGENMODE BASIS FUNCTIONS FOR A NOTCHED ANNULAR RING SLOT ONA SHORTING PLATE OF A RECTANGULAR WAVEGUIDE," ISAP, Yokosuka, 3C3-4, pp. 428-431 (26-28, Nov. 2002)
  5. Kaoru SUDO, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "RADIAL LINE SLOT ANTENNAS FED BY A RECTANGULAR WAVEGUIDE THROUGH A CROSSED SLOT," ISAP, Yokosuka, 1B4-4, pp.137-140 (26-28, Nov. 2002)
  6. Takuichi Hirano, Jiro Hirokawa, and Makoto Ando, "A MoM/FEM HYBRID ANALYSIS OF CIRCULARLY POLARIZED SLOT ELEMENTS WITH COMPLEX SHAPES," XXVIIth General Assembly of the International Union of Radio Science (URSI), B7.O.7 (Oral), pp.1828-1831, (Maastricht, the Netherlands, 17-24 August, 2002)
  7. Takuichi Hirano, Jiro HIROKAWA, and Makoto ANDO, "Design of a Linear Array of Waveguide Crossed-slots Using the Method of Moments with Numerical-Eigenmode Basis Functions," IEEE AP-S/URSI, Vol.3, pp. 522-525, San Antonio, June 16-21, 2002.
  8. Kaoru SUDO, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO, "Excitation of a Rotating Mode in a Radial Waveguide by a Cross Slot-coupled Rectangular Waveguide," IEEE AP-S/URSI, Vol.3, pp. 412-415, San Antonio, June 16-21, 2002.
  9. T. Hirano, J. Hirokawa, and M. Ando, "Analysis of a Waveguide Matching Crossed Slot by Method of Moments Using Numerical Eigenmode Basis Functions," IEEE AP-S/URSI, Vol.2, pp 258-261 (Boston, July 8-13, 2001)
  10. T. Hirano, J. Hirokawa, and M. Ando, "Edge-based FEM analysis for MoM function in a waveguide cross slot," IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Vol.1, pp.468-471, (Orlando, Florida, July 11-16, 1999).
1997 (Undergraduate)

Efficient analysis of dipole arrays using Improved Circuit Theory (ICT)

  1. 青木一穂・A.I. Imoro・平野拓一・稲垣直樹・菊間信良, "ICTによる二次元コーナーリフレクタアンテナの解析," 電子情報通信学会総合大会, B-1-66, 1998年3月.
  2. 平野拓一, 青木一穂, A.I. Imoro, 稲垣直樹, 菊間信良, "ICTによる二次元コーナーリフレクタアンテナの解析に関する研究," 電気関係学会東海支部連合大会講演論文集, 459, p.230, 1997年.
  3. Introduction to ICT(Improved Circuit Theory)(by T. Hirano)

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