Curriculum Vitaes
Profile Information
- Affiliation
- Professor, Faculty of Science and Technology, Department of Information and Communication Sciences, Sophia University
- Degree
- 博士（工学）(東京大学)電気工学修士(東京大学)
- Researcher number
- 70634963
- J-GLOBAL ID
- 201201051908687873
- researchmap Member ID
- 7000002862
2012年－現在 上智大学理工学部
○建築情報学、i-Construction
○CASE（コネクティッド、自動化、シェアリング、電動化）
○人工知能（AI）ネットワーク
○機械学習を用いた無線センサネットワーク
○第5世代移動通信システム（5G）
○スマートメータリングシステム
○ホワイトスペースの有効活用に向けた低歪送受信機
○高速起動・低消費電力符号化方式
2000年－2001年 マサチューセッツ工科大学（MIT）
○Wireless Systems Research
1992年－2012年 日本電信電話株式会社（NTT）
○企業内R&D（Research and Development）のインキュベーション/プロデュース
○300MHz帯物品管理/433MHz帯国際物流用RFID
○ソフトウェア無線用マルチバンド受信機
○1.9GHz帯PHS/11GHz帯固定ディジタルマイクロ波方式用高効率電力増幅器
○モノリシックマイクロ波送受信回路の小型化・高性能化
1990年－1992年 東京大学工学部
○強誘電性液晶スイッチング光交換方式
○外乱推定に基づく大規模電力システムの分散制御
（共同研究者： 和保 孝夫 先生、高野 忠 先生、水澤 純一 先生）
研究活動では、主に次の二つのことを研究の柱にしている。
（Sophia EECS）
１．IoTを加速する機械学習を用いた「Beyond 5G」無線センサネットワークの低消費電力・高信頼伝送
２．人工知能（AI）チップを用いたIoTエッジデバイスの小型化・低消費電力化
教育活動では、学部生を対象に、「情報フルエンシー（電気回路・電子回路）」、「情報フルエンシー（予測分析）」、「データサイエンスとデータエンジニアリングの基礎」、「電子回路」、「計測と制御」、「通信ネットワークシステム」、「基礎情報学【物質生命理工学科クラス】」、「COMMUNICATION AND NETWORK ENGINEERING」、「情報理工学実験I」、「情報理工学実験II」の講義と実験を担当している。
また、大学院生を対象に、「センサネットワーク特論」、「集積回路工学」の講義を担当している。
公開講座においては、「データドリブンのビジネス判断に向けた解析手法」、「ビジネス・知財入門」を担当している。
Research Interests
1Research Areas
4Research History
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Apr, 1992 - Mar, 2012
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Apr, 2006 - Sep, 2010
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Sep, 2000 - Aug, 2001
Education
3-
Apr, 1990 - Mar, 1992
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Apr, 1988 - Mar, 1990
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Apr, 1986 - Mar, 1988
Committee Memberships
2-
Oct, 2012 - Sep, 2014
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May, 2008 - May, 2014
Awards
9-
Jan, 2025
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Sep, 2016
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Aug, 2015
Papers
122-
Journal of Multiple-Valued Logic and Soft Computing, 45(1-3) 249-266, Jul, 2025 Peer-reviewed
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2025 IEEE 55th International Symposium on Multiple-Valued Logic (ISMVL), 63-68, Jun 5, 2025 Peer-reviewed
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IEICE Transactions on Information and Systems, E107.D(8) 966-975, Aug 1, 2024 Peer-reviewed
Misc.
35-
32nd International Workshop on Post-Binary ULSI Systems (ULSIWS2023), May 21, 2023 Peer-reviewed
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29th International Workshop on Post-Binary ULSI Systems (ULSIWS2020) Abstract, Nov, 2020 Peer-reviewed
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Progress In Electromagnetics Research Symposium Abstracts, 1090-1090, Aug, 2018 Peer-reviewed
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Progress In Electromagnetics Research Symposium Abstracts, 1226-1226, Aug, 2018 Peer-reviewed
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日経コミュニケーション, (629) 52-60, Jun 1, 20165GMF（第5世代モバイル推進フォーラム）のキーパーソンが執筆する5G（第5世代移動通信システム）連載の第11回。今回はNICT/ATRが複数の無線システムの横断利用、上智大学が移相器の小型化・マルチバンド化をそれぞれ解説する。
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Proceedings of the Society Conference of IEICE, 2013 "S-20", Sep 3, 2013
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IEEE Radio & Wireless Week (RWW) 2013, Jan, 2013 Invited（proceedingsあり）
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Proceedings of the Society Conference of IEICE, 2002(1) 27-27, Aug 20, 2002
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Proceedings of the Society Conference of IEICE, 2001(1) 31-31, Aug 29, 2001
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Proceedings of the Society Conference of IEICE, 2001(1) 35-35, Aug 29, 2001
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IEICE technical report. Microwaves, 101(237) 71-76, Jul 20, 2001A broadband quadrature mixer for direct conversion transceivers has been developed. This mixer is composed of anti-parallel diode mixers, a power divider-combiner, a 45-degree power divider and differential amplifiers. The mixer's broadband characteristics are achieved using a novel power divider-combiner and a 45-degree power divider. From 0.9 GHz to 2.7 GHz, this mixer for transmitters gives an image rejection of greater than 30 dBc and a 2LO leakage of less than -40 dBm. From 0.9 GHz to 2.6 GHz, this mixer for receivers has an amplitude error of less than 1.6 dB and a phase error of less than 3 degrees.
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IEICE technical report. Electron devices, 100(549) 21-26, Jan 12, 2001A 1.9 GHz direct conversion RF module has been developed. This RF module is composed of an RF amplifier block and a mixer block. The proposed RF amplifier block is composed of a variable gain amplifier and a low noise amplifier, and has a low distortion characteristic when gain is controlled. The proposed mixer block is miniaturized by novel dividers. The divider has centain filter characteristics though the stub is not used. Therefore the proposed RF module has achieved a wide dynamic range and miniaturization. The developed RF amplifier block achieves third-order intermodulation of less than -30 dBm below a -10 dBm input signal at 1.9 GHz. The amplitude error and the phase error of the developed RF module are less than 0.4 dB and less than 0.3 degree below a -5 dBm input signal at 1.9 GHz when gain is controlled.
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IEICE technical report. Electron devices, 100(406) 37-42, Oct 31, 2000This paper presents comprehensive analysis of an innovative 180° rat-race hybrid and of balanced active doubler with the aim to achieve broadband operation. The proposed concept are experimentally validate by the fabrication of a Ka-band 180° rat-race hybrid and a V-band PHEMT active doubler. These devices have been fabricated with the three-dimensional MMIC technology to benefit from a high level of integration. The fabricated hybrid exhibits a bandwidth of 31%(28.8GHz-39.4GHz)with -15dB return loss, insertion loss of 1.6dB, power balance less than 1.1dB and phase balance better then 2°. The balanced doubler can be used from 27GHz to 34.5GHz with a fundamental frequency rejection better than 45dB and isolation better than 30dB. These substantially improved performances in term of bandwidth make the devices particularly suitable for the realization of high quality and widely tunable V-band frequency sources.
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Proceedings of the Society Conference of IEICE, 2000(1) 118-118, Sep 7, 2000
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Proceedings of the IEICE General Conference, 2000(1) 99-99, Mar 7, 2000
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Proceedings of the IEICE General Conference, 2000(1) 603-603, Mar 7, 2000
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Technical report of IEICE. DSP, 99(486) 1-6, Dec 3, 1999A resonant-tunneling high e1ectron mobility transistor (RTHEMT) doubler with matching circuits is described. Because RTHEMT has a strong nonlinearity even at the low input power, the doubler is characterized by its low input power operation. The conversion gain was 1.5 dB for a-10-dBm input signal at 2.4 GHz. Power consumption was only 4 mW, one-fifth that of a doubler using a GaAs MESFET. The reflection loss was a maximum of 6 dB at 2.4 GHz.
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Proceedings of the Society Conference of IEICE, 1999(1) 39-39, Aug 16, 1999
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Proceedings of the Society Conference of IEICE, 1999(1) 50-50, Aug 16, 1999
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Proceedings of the IEICE General Conference, 1999(1) 92-92, Mar 8, 1999
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Proceedings of the Society Conference of IEICE, 1998(1) 61-61, Sep 7, 1998
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Proceedings of the Society Conference of IEICE, 1998(1) 60-60, Sep 7, 1998
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Proceedings of the IEICE General Conference, 1998(1) 89-89, Mar 6, 1998
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Proceedings of the IEICE General Conference, 1998(1) 55-55, Mar 6, 1998
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Proceedings of the Society Conference of IEICE, 1997(1) 56-56, Aug 13, 1997
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Proceedings of the Society Conference of IEICE, 1996(1) 352-352, Sep 18, 1996
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Proceedings of the IEICE General Conference, 1996(1) 96-96, Mar 11, 1996
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Proceedings of the Society Conference of IEICE, 1995(1) 78-78, Sep 5, 1995
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Proceedings of the Society Conference of IEICE, 1995(1) 86-86, Sep 5, 1995
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IEICE technical report. Microwaves, 95(179) 57-62, Jul 25, 1995A low-loss monolithic microwave active inductor is proposed. This circuit features the use of a loss compensation technique which generates constant negative resistance. The proposed inductor's Q value is more than fifty times larger than that of conventional inductors at 1GHz frequency. The chip size of the experimental circuit is 0.43 x 0.4mm^2.
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Proceedings of the IEICE General Conference, 1995(1) 73-73, Mar 27, 1995
Books and Other Publications
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John Wiley & Sons, Inc., Mar, 2005 (ISBN: 9780471270539)RF and Microwave Engineering is one of the fastest growth areas of the past decade and will probably continue to be a very active area of research and application in a large variety of fields. The six volume set of Encyclopedia of RF and Microwave Engineering illustrates how this field has been the key to enabling technology responsible for the phenomenal growth of wireless communications. This set also examines how RF and microwave engineering continues to have great influence as the technology behind such important applications as radar, remote sensing, remote control, sensors, navigation, surveillance, electronic warfare, radiometers, plasma research, and imaging.