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SATO TOSHIRO

Academic OrganizationAcademic Assembly School of Science and Technology Institute of EngineeringTEL
Education and Research OrganizationInterdisciplinary Cluster for Cutting Edge Research Research Center for Aerospace SystemsFAX
PositionProfessorMail Address
Address4-17-1 Wakasato, Nagano, 380-8553Web sitehttp://amdl.shinshu-u.ac.jp/

Modified:07/06/2020

Profile

Assigned Class
Graduate School of Science and Technology
Faculty of Engineering, Department of Electronics and Information Systems Engineering
Research Field
High Frequency Magnetic Materials
Microwave Magnetics
High Frequency Power Magnetics
Magnetic Sensor
Current Subject
Power Magnetics
Keywords:Micro smart power grid , Power supply on chip , Planar inductor , Ferrite thick film , Composite magnetic core
Sensor Magnetics
Keywords:Optical probe sensor , Kerr effect , Tunable sensor , Soft/hard hybrid magnetic film
Microwave Magnetics
Keywords:4G Cell phone , Magnetic thin film passives , Exchange biased high-frequency magnetic thin film , Granular magnetic thin film
Academic Societies
Academic Societies
Magnetic Society of Japan
Institute of Electrical Engineers of Japan
Institute of Electronics, Information and Communication Engineers of Japan
IEEE Magnetics Society
Hokuriku-Shinetsu Branch, Japanese Society for Engineering Education
The Japan Society of Applied Electromagnetics and Mechanics

Committee of Academic Societies
2020-2025 , Institute of Electrical Engineers of Japan , Chair, Techniacal Committee on Magnetics
2019-2020 , IEEE Shin-etsu Section , Vice Chair
2019-2020 , IEEE MAG-33 Shin-etsu Chapter , Chair
2018-2019 , Organizing Committee Member, International Symposium on Advanced Power Packaging 2019, ISAPP2019 (Osaka, Japan)
2014-2015 , IEEE Power Electronics Society , Technical Program Committee Member, International Telecommunications Energy Conference, INTELEC2015 (Osaka, Japan)
2013-2014 , Institute of Electrical Engineers of Japan , Auditor, Fundamentals and Materials Society
2013-2014 , IEEE Magnetics Society , Executive Committee Member, International Conference on Microwave Magnetics, ICMM2014 (Boston, USA)
2013-2014 , IEEE Magnetics Society , Program Committee Chair, International Conference on Microwave Magnetics, ICMM2014 (Boston, USA)
2012-2018 , Institute of Electrical Engineers of Japan , Member, Techniacal Committee on Magnetics
2012-2013 , Magnetics Society of Japan , Advisor to the Board of Directors
2009-2011 , Magnetics Society of Japan , Editorial Director
2007-2008 , IEEE Magnetics Society , Advisory Committee Member, 7th International Workshop on high frequency micromagnetic devices and materials, MMDM7 (Sacramento, USA)
2006-2008 , Magnetics Society of Japan , Council Member
2006-2007 , IEEE Magnetics Society , Advisory Committee Member, 6th International Workshop on high frequency micromagnetic devices and materials, MMDM6 (Madrid, Spain)
2005-2006 , Advisory/Program Committee Member, 5th International Workshop on High Frequency Micromagnetic Devices and Materials, MMDM5 (Baltimore, USA)
2004-2005 , IEEE Magnetic Society , Program Committee Member, Internatinal Magnetics Conference, INTERMAG2005 (Nagoya, Japan)
2004-2005 , Advisory/Program Committee Member, 4th International Workshop on High Frequency Micromagnetic Devices and Materials, MMDM4 (San Diego, USA)
2002-2011 , Institute of Electrical Engineers of Japan , Member, Techniacal Committee on Magnetics
2002-2003 , Publications Chair, 2nd International Workshop on high frequency micromagnetic devices and materials, MMDM2 (Bostont,USA)
2002-2003 , Executive Committee Member, IUMRS-ICAM 2003 (Yokohama, Japan)
2001-2002 , Publications Chair, 1st International Workshop on high frequency micromagnetic devices and materials, MMDM1 (Delft,Netherlands)
1999-2009 , Magnetics Society of Japan , Chief Editor, High frequency magnetics and measurement, Editorial Committee
1999-2005 , Institute of Electroncs, Information and Communication Engineers of Japan , Member, Techniacal Committee on Telecommunications Energy
Academic Background
Graduate School
Chiba University , (Product Engineering , Graduate School of Science and Technology) , 1989
Chiba University , (Electrical Engineering , Graduate School of Engineering) , 1984

College
Chiba University , (Faculty of Engineering) , 1982

Degree
Doctor of Philosophy
Master of Engineering
Bachelor of Engineering
Awards
2019
2019 , Encouragement Paper Award ;Integrated CMOS Switch Buck DC-DC Converter Fabricated in Organic Interposer with Embedded Magnetic Core Inductor, T. Akiyama, S. Ishida, T. Shirasawa, T. Fukuoka, S. Hara, H. Yoshida, M. Sonehara, T. Sato, K. Miyaji, Journal of the Magnetics Society of Japan, Vol.43, No.3, pp.64-69, May 2019..
2018 , 2018 Academic Plaza Award, 2018 JPCA Show/Academic Plaza, Japan Institute of Electronics Packaging
2017 , Encouragement Paper Award ; Low permeability composite magnetic core transformer with high coupling coefficient and its application to PFM controlled quasi-resonant mode flyback-type DC-DC converter, K. Sato, T. Sato, M. Sonehara, H. Takeuchi, Journal of the Magnetics Society of Japan, Vol.41, No.6, pp.132-139, Dec. 2017.
2017 , Encouragement Paper Award : Investigation on Improvement of Figure of Merit of Faraday-effect of Fe (Co) Thin Film by Introduction of Induced Transmission Filter, M. Miyamoto, T. Kubo, T. Hanada, H. Ihara, T. Sato, M. Sonehara, Journal of the Magnetics Society of Japan, Vol.1, No.1, pp.14-19, 2017.
2015 , MSJ Distinguished Paper Award, K. Hagita, Y. Yazaki, Y. Kondo, M. Sonehara, T. Sato, T. Fujii, K. Kobayashi, S. Nakazawa, H. Shimizu, T. Watanabe, Y. Seino, N, Matsushita, Y. Yanagihara, T. Someya, H. Fuketa, M. Takamiya, and T. Sakurai, "CMOS Switch Buck DC-DC Converter Fabricated in Organic Interposer with Embedded Zn-Fe Ferrite Core Inductor", Journal of the Magnetics Society of Japan, Vol.39, No.2, pp.71-79 (2015)
2015 , Excellent Presentation Award, Spring Meeting, Japan Institute of Electronics Packaging
2015 , Academic Plaza 5 years Award, 2015 JPCA Show/Academic Plaza, Japan Institute of Electronics Packaging
2013 , 2013 Academic Plaza Award, 2013 JPCA Show/Academic Plaza, Japan Institute of Electronics Packaging
2013 , ICF11, New Product & Novel Technology Award; Kazuhiro Hagita, Hiroki Kobayashi, Fumihiro Sato, Yuichiro Yazaki, Makoto Sonehara, Toshiro Sato, Tetsuro Watanabe, Nobuhiro Matsushita, Tomoharu Fujii, Hiroshi Shimizu, Kazutaka Kobayashi, "Magnetic Properties of Spin-sprayed Ferrite Film Deposited on Glass/Epoxy Build-up Layer in Organic Interposer Substrate", THE 11TH INTERNATIONAL CONFERENCE ON FERRITES, 17pP-51 (2013).
2012 , IEEE Sensors 2012, Best Papers Award; N. Hirokubo, H. Komatsu, N. Hashimoto, M. Sonehara, T. Sato, "Wideband Visible Wavelength Range MEMS Fabry-Perot Tunable Filter with Calibration System", Proceedings of IEEE SENSORS 2012, pp.303-306 (2012).
1999 , MSJ Distinguished Paper Award, T. Sato, S. Ikeda, K. Yamasawa, T. Mizoguchi, "Transmission-Line Low-Pass Filter Composed of Inner Copper Conductor Lines, Dielectric layeres, and Electrically Grounded Metallic Magnetic Layers", Journal of the Magnetics Society of Japan, Vol.23, No.4-2,pp.1653-1656 (1999).
1994 , Excellent Paper Presentation Award, Institute of Electrical Engineers of Japan
Research Career
Research Career
2005- , Professor, Faculty of Engineering, Shinshu University
1996-2005 , Associate Professor, Faculty of Engineering, Shinshu University
1996-1996 , Manager, Semiconductor Div., TOSHIBA Corp.
1989-1996 , Researcher, R&D Center, TOSHIBA Corp.

Research

Books, Articles, etc.
Articles
Integrated CMOS Switch Buck DC-DC Converter Fabricated in Organic Interposer with Embedded Magnetic Core Inductor
Journal of the Magnetics Society of Japan,43(3):64-69 2019(May)
Author:T. Akiyama, S. Ishida, T. Shirasawa, T. Fukuoka, S. Hara, H. Yoshida, M. Sonehara, T. Sato, K. Miyaji


Fundamental Study of Magnetrorheological Fulid Brakes for Regional Jets
Journal of the Japan Society of Applied Electromagnetics and Mechanics,27(1):122-127 2019(May)
Author:T. Sumi, N. Sato, M. Sonehara, T. Sato, H. Wakiwaka and Y. Kikuchi


Au–Sn Soldering Using a Micro-heater to Restrain the Excess Temperature Rise Inside the Package
Proceedings of 2019 International Conference on Electronics Packaging (ICEP 2019), Niigata, Japan, P02, 6 pages 2019(Apr.)
Author:Hideaki Mizusaki, Toshiro Sato, Makoto Sonehara


Enhancement of Faraday effect of transparent ferromagnetic Co-MgF2 granular film by introducing Fabry-Perot resonant structure
ELECTRICAL ENGINEERING IN JAPAN,206(4):3-10 2019(Mar.)
Author:Miyamoto M., Kubo T., Fujishiro Y., Shiota K., Sonehara M., Sato T.


An 86% Eficiency, 20MHz, 3D-Integrated Buck Converter with Magnetic Core Inductor Embedded in Interposer Fabricated by Epoxy/Magnetic-Filler Composite Build-Up Sheet
Proceedings of the 34th Applied Power Electronics Conference and Exposition 2019 (APEC2019),:1561-1566 2019(Mar.)
Author:Takanobu Fukuoka, Yuki Karasawa, Tomoki Akiyama, Ryoutaro Oka, Shu Ishida, Tomohiro Shirasawa, Makoto Sonehara, Toshiro, Sato, Kousuke Miyaji


Loss Reduction of LLC Resonant Converter using Magnetocoated Wire
IEEJ Journal of Industry Applications,8(1):51-56 2019(Jan.)
Author:Tatsuya Yamamoto, Yasuyuki Konno, Kanako Sugimura, Toshiro Sato, Yinggang Bu, Tsutomu Mizuno


Fabrication of Ferromagnetic Co–MgF2 Granular Film with High Transmittance and Large Faraday Effect for Optical Magnetic Field Sensor
IEEE Transactions on Magnetics,54(11):#2501205-1-5 (5 pages) 2018(Nov.)
Author:Mitsunori Miyamoto, Toshiya Kubo, Yuta Fujishiro, Kenta Shiota, Makoto Sonehara, Toshiro Sato


Novel Method for Making Surface Insulation Layer on Fe-Based Amorphous Alloy Powder by Surface-Modification using Two-Step Acid Solution Processing
IEEE Transactions on Magnetics,54(11):#2801805-1-5 (5 pages) 2018(Nov.)
Author:Kanako Sugimura, Naoki Yabu, Makoto Sonehara, Toshiro Sato


Fabrication and Evaluation of Composite Magnetic Core Using Iron-Based Amorphous Alloy Powder with Different Particle Size Distributions
IEEE Transactions on Magnetics,54(11):#2801605-1-5 (5 pages) 2018(Nov.)
Author:Naoki Yabu, Kanako Sugimura, Makoto Sonehara, Toshiro Sato


Core-shell structured Mn-Zn-Fe ferrite/Fe-Si-Cr particles for magnetic composite cores with low loss
Advanced Powder Technology,29(6):1481-1486 2018(Jun.)
Author:Satoshi Mori, Takeshi Mitsuoka, Kanako Sugimura, Ryosuke Hirayama, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita


Pseudo-differential CMOS analog front-end circuit for wide-bandwidth optical probe current sensor
Japanese Journal of Applied Physics,57(04FF06):1-6 2018(Mar.)
Author:Takaharu Uekura, Kousuke Oyanagi, Makoto Sonehara, Toshiro Sato, and Kousuke Miyaji


Low permeability composite magnetic core transformer with high coupling coefficient and its application to PFM controlled quasi-resonant mode flyback-type DC-DC converter
Journal of the Magnetics Society of Japan,41(6):132-139 2017(Dec.)
Author:K. Sato, T. Sato, M. Sonehara, H. Takeuchi


Characterization of UHF Band LC Filter With RF Spiral Inductor Using Carbonyl-Iron Powder/Epoxy Composite Magnetic and Chip Capacitor
IEEE Transactions on Magnetics,53(11):#4002905-1-5 (5 pages) 2017(Nov.)
Author:Makoto Sonehara, Sota Yamaguchi, Yuki Miyajima, Toshiro Sato, Takeshi Inomata, and Yuji Ono


Surface-Oxidized Amorphous Alloy Powder/Epoxy-Resin Composite Bulk Magnetic Core and Its Application to Megahertz Switching LLC Resonant Converter
IEEE Transactions on Magnetics,53(11):#2801406-1-6 (6 pages) 2017(Nov.)
Author:Kanako Sugimura, Daisuke Shibamoto, Naoki Yabu, Tatsuya Yamamoto, Makoto Sonehara, Toshiro Sato, Tsutomu Mizuno, and Hideaki Mizusaki


Transient Response Improvement of Digitally Controlled DC-DC Converter with Feedforward Compensation
Proceedings of the International Telecommunications Energy Conference 2017 (INTELEC2017),:609-614 2017(Oct.)
Author:Kosuke Sato, Toshiro Sato, Makoto Sonehara


Fabrication and evaluation of dispersed-Ag nanoparticles-in-polyimide thin films
Japanese Journal of Applied Physics,56(10S):10PB05 (4 pages) 2017(Sep.)
Author:Makoto Sonehara, Yuki Watanabe, Sota Yamaguchi, Takanori Kato, Yasuaki Yoshisaku, Toshiro Sato, and Eiji Itoh


High permeability and low loss of Ni-Zn-Fe ferrite/metal composite cores in high frequency region
AIP Advances,7:056657-1-7 2017(Feb.)
Author:Satoshi Mori, Takeshi Mitsuoka, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita


Relative Estimation of Water Content for Flat-Type Inductive-Based Oil Palm Fruit Maturity Sensor
Sensors,17(1):10page 2017(Jan.)
Author:Norhisam Misron, Nor Aziana Aliteh, Noor Hasmiza Harun, Kunihisa Tashiro, Toshiro Sato and Hiroyuki Wakiwaka


Fundamental study of high Q-factor RF spiral inductor using carbonyl-iron/epoxy composite magnetic core
IEEJ Transactions on Electrical and Electronic Engineering,11(S1):S3-S8 2016(Aug.)
Author:Makoto Sonehara, Kazuaki Furihata, Jun Koguchi, Shingo Tanaka and Toshiro Sato


Fundamental Study of Non-Contact Water Salinity Sensor by Using Electromagnetic Means for Seawater Desalination Plants
IEEE Transactions on Magnetics,52(7):#4001604-1-4 2016(Jul.)
Author:Makoto Sonehara, Nguyen Van Toai, Toshiro Sato


Formation of high electrical-resistivity thin surface layer on carbonyl-iron powder (CIP) and thermal stability of nanocrystalline structure and vortex magnetic structure of CIP
AIP Advances, American Institute of Physics,6:055932-1-8 2016(May)
Author:K. Sugimura, Y. Miyajima, M. Sonehara, T. Sato, F. Hayashi, N. Zettsu, K. Teshima, and H. Mizusaki


Fabrication and Evaluation of Electromagnetic Defect Detector for Laser Welding Joint on Stainless Steel Pipe
Proceedings of the ICST2015 (International Conference on Sensing Technology 2015), Auckland, New Zealand,:338-341 2015(Dec.)
Author:Makoto Sonehara, Fumiya Nagashima, Toshiro Sato, Kohei Yazaki, Noritaka Aota, Susumu Shimadu


Transient Response Improvement of Digitally Controlled Buck-Type DC-DC Converter with Feedforward Compensator
Proceedings of the International Telecommunications Energy Conference 2015 (INTELEC2015),:1153-1157 2015(Oct.)
Author:Kosuke Sato, Toshiro Sato, Makoto Sonehara


Control of Magnetic Moment in Uniaxial Anisotropy Magnetic Thin Film Taking Leakage Flux in RF Planar Spiral Inductors with Closed-Magnetic Core into Account
Electrical Engineering in Japan,191(2):1-6 2015(Apr.)
Author:Makoto Sonehara, Kenji Ikeda and Toshiro Sato


Embedded Planar Power Inductor Technology for Package-level DC Power Grid
ICEP-IAAC 2015 Proceedings (2015 International Conference on Electronics Packaging & iMAPS All Asia Conference),:814-817 2015(Apr.)
Author:Yuta Kondo, Yuichiro Yazaki, Makoto Sonehara, Toshiro Sato, Tetsuro Watanabe, Yuto Seino, Nobuhiro Matsushita, Tomoharu Fujii, Kazutaka Kobayashi, Hiroshi Shimizu, Yuki Yanagisawa, Teruki Someya, Hiroshi Fuketa, Makoto Takamiya, Takayasu Sakurai


CMOS Switch Buck DC-DC Converter Fabricated in Organic Interposer with Embedded Zn-Fe Ferrite Core Inductor
Journal of the Magnetics Society of Japan,39(2):71-79 2015(Mar.)
Author:K. Hagita, Y. Yazaki, Y. Kondo, M. Sonehara, T. Sato, T. Fujii, K. Kobayashi, S. Nakazawa, H. Shimizu, T. Watanabe, Y. Seino, N, Matsushita, Y. Yanagihara, T. Someya, H. Fuketa, M. Takamiya, and T. Sakurai


Embedded Planar Power Inductor in an Organic Interposer for Package-Level DC Power Grid
IEEE Transactions on Magnetics,50(11):#8401304-1-4 (4 pages) 2014(Nov.)
Author:Yuichiro Yazaki, Kazuma Ishidate, Kazuhiro Hagita, Yuta Kondo, Saki Hattori, Makoto Sonehara, Toshiro Sato, Tetsuro Watanabe, Yuto Seino, and Nobuhiro Matsushita


Development of Optical Probe Current Sensor with Kerr Effect for Power Electronics
IEEE Sensors 2014 Proceedings, Valencia, Spain,:1928-1931 2014(Nov.)
Author:Daiki Karasawa, Makoto Sonehara, Shin Kitazawa, Toshiro Sato


Efficiency Increase in On-Chip Buck Converter by Introduction of High Permeability Material to Inductor on Interposer
Journal of the Japan Society of Powder and Powder Metallurgy,61(S1):S340-S342 2014(May)
Author:H. Fuketa, Y. Shinozuka, K. Ishida, M. Takamiya, T. Fujii, H. Shimizu, K. Kobayashi, T. Sato, T. Sakurai


Wafer level package by using post dicing process
ICEP2014 Proceedings (International Conference on Electronics Packaging 2014),:34-38 2014(Apr.)
Author:Noriyuki Fujimori, Takatoshi Igarashi, Takahiro Shimohata, Takuro Suyama, Kazuhiro Yoshida, Yusuke Nakagawa, Tsutomu Nakamura, and Toshiro Sato


Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles
Journal of Applied Physics,114(12):124304 - 124304-8 2013(Sep.)
Author:T. Okada, Y. Gonzalez-Alfaro, A. Espinosa, N. Watanabe, T. Haeiwa, M. Sonehara, S. Mishima, T. Sato, A. Munoz-Noval, P. Aranda, M. Garcia-Hernandez, E. Ruiz-Hitzky


Wideband Visible Wavelength Range MEMS Fabry-Perot Tunable Filter with Highly Accurate Calibration System
IEEE Sensors Journal,13(8):2930-2936 2013(Aug.)
Author:Nozomu Hirokubo, Hiroshi Komatsu, Nobuaki Hashimoto, Makoto Sonehara, and Toshiro Sato


Influence of Initial Surface Roughness on Severe Wear Volume for SUS304 Austenitic Stainless Steels
International Journal of Chemical, Materials Science and Engineering,7(11):126-130 2013(Jul.)
Author:A. Kawamura, K. Ishida, K. Okada, T. Sato


Carbonyl-Iron/Epoxy Composite Magnetic Core for Planar Power Inductor Used in Package-Level Power Grid
IEEE Transactions on Magnetics,49(7):4172-4175 2013(Jul.)
Author:Y. Sugawa, K. Ishidate, M. Sonehara, T. Sato


Characterization of Tunable Magnetic Sensor Using Bias Magnetic Field of a Hard Magnetic Film Magnetized by Pulsed-Magnetic Field
IEEE Transactions on Magnetics,49(7):3854-3857 2013(Jul.)
Author:M. Sonehara, H. Kamada, S. Iida, T. Sato


Fabrication of a Zn ferrite thick film planar power inductor for DC-DC converter LSI package
ELECTRONICS AND COMMUNICATIONS IN JAPAN,96(4):53-60 2013(Apr.)
Author:S. Okazaki, A. Takeuchi, A. Takeshima, M. Sonehara, T. Sato, N. Matsushita


90% High Efficiency and 100-W/cm3 High Power Density Integrated DC-DC Converter for Cellular Phones
IEEE Transactions on Power Electronics,28(4):1994-2004 2013(Apr.)
Author:Satoshi Sugahara, Kouhei Yamada, Masaharu Edo, Toshiro Sato, and Kiyohito Yamasawa


Wideband visible wavelength range MEMS Fabry-Perot Tunable Filter with Ag alloy mirror
ELECTRONICS AND COMMUNICATIONS IN JAPAN,96(3):17-23 2013(Mar.)
Author:N. Hirokubo, H. Komatsu, N. Hashimoto, M. Sonehara, T. Sato


A possibility of magnetic field biasing tunable inductive device using a hard magnetic film magnetized by pulsed-magnetic field
IEEE Transactions on Magnetics,49(3):978-981 2013(Mar.)
Author:Yosuke Obinata, Megumi Yuki, Makoto Sonehara, Yutaka Kuramoto, Kunihiko Suzuki, Toshiro Sato


Relation Between High-Frequency Properties and Direction of Anisotropy Magnetic Field in Magnetic Thin Film for RF Inductor Applications
IEEE Transactions on Magnetics,48(11):4515-4517 2012(Nov.)
Author:Makoto Sonehara, Toshiro Sato


Wideband Visible Wavelength Range MEMS Fabry-Perot Tunable Filter with Calibration System
Proceedings of IEEE SENSORS 2012,:303-306 2012(Oct.)
Author:N. Hirokubo, H. Komatsu, N. Hashimoto, M. Sonehara, T. Sato


Planar Power Inductor with Magnetic Film for Embedded LSI Package
45th International Symposium on Microelectronics 2012 Proceedings,:464~472 2012(Sep.)
Author:Tomoharu Fujii, Kazutaka Kobayashi, Hiroshi Shimizu, Shinji Nakazawa, Toshiro Sato, Fumihiro Sato, Hiroki Kobayashi


OPTICAL PROBE CURRENT SENSOR MODULE USING THE KERR EFFECT OF EXCHANGE-COUPLED MAGNETIC FILM AND ITS APPLICATION TO IGBT SWITCHING CURRENT MEASUREMENTS
INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS,5(2):347-361 2012(Jun.)
Author:K. Ogawa, S. Suzuki, M. Sonehara, T. Sato, K. Asanuma


Optical probe current sensor module using the Kerr effect and its application to IGBT switching current measurements
Proceedings of 5th International Conference on Sensing Technology 2011 (ICST2011), Palmerston North, New Zealand 2011(Nov.)
Author:Keisuke Ogawa,Shin Suzuki,Makoto Sonehara,Toshiro Sato,Kazushi Asanuma


Fabrication of Planar Power Inductor for Embedded Passives in LSI Package for Hundreds Megahertz Switching DC-DC Buck Converter
IEEE Transactions on Magnetics,47(10):3204-3207 2011(Oct.)
Author:Hideyuki Ito, Asako Takeuchi, Shinya Okazaki, Hiroki Kobayashi, Yuichiro Sugawa, Akihiro Takeshima, Makoto Sonehara, Nobuhiro Matsushita, Toshiro Sato


Increase of Q-Factor of RF Magnetic Thin Film Inductor by Introducing Slit-Patterned Magnetic Thin Film and Multiline-Conductor Spiral Coil
IEEE Transactions on Magnetics,47(10):3196-3199 2011(Oct.)
Author:Takayuki Maruyama, Yosuke Obinata, Makoto Sonehara, Kenji Ikeda, Toshiro Sato


Characteristic Analysis of a Micro DC-DC Converter for Portable Electronic Devices and an Improvement of Transient Response Characteristic
ELECTRICAL ENGINEERING IN JAPAN,175(3):56-64 2011(Mar.)
Author:S. Sugahara, K. Yamada, H. Nishio, M. Edo, T. Sato, and K. Yamasawa


Crystal Orientation of Co35Fe65 Thin Film for the GHz Frequency Use with More Than 10 GHz
Journal of the Magnetics Society of Japan,34(3):248-253 2010(May)
Author:Makoto Munakata, Shin-ichi Aoqui, Masatoshi Ohkoshi, Koichiro Maki, Makoto Sonehara, Kenji Ikeda, Toshiro Sato


Strain sensor using stress-magnetoresistance effect of Ni–Fe/Mn–Ir exchange-coupled magnetic film
Journal of Applied Physics,107(9):3 pages 2010(May)
Author:M. Sonehara, T. Shinohara, T. Sato, K. Yamasawa, Y. Miura


Cross-talk suppression in high-density printed circuit boards using magnetic composite filled in spacing between signal lines
IEEE Transactions on Magnetics,45(10):4801-4803 2009(Oct.)
Author:S. Kayama, M. Sonehara, T. Sato, K. Yamasawa, Y. Miura


Development of an electromagnetic wave shielding textile by electroless Ni-based alloy plating
IEEE Transactions on Magnetics,45(10):4173-4175 2009(Oct.)
Author:M. Sonehara, S. Noguchi, T. Kurashina, T. Sato, K. Yamasawa, Y. Miura


Optical/High-frequency Applications of Functional Magnetic Materials
IEEJ Transactions on Electrical and Electronic Engineering,4(1):6-7 2009(Feb.)
Author:Mitsuteru Inoue, Toshiro Sato


Fundamental study of optical probe current sensor using Kerr effect of single magnetic domain film
Proceedings of the 18th IEEE Conference on Sensors (IEEE Sensors 2009),:1232-1237 2009
Author:M. Sonehara, K. Asanuma, N. Otani, T. Goto, Y. Kikuchi, T. Sato, K. Yamasawa, Y. Miura


CoFeSio/SiO2 multilayer granular films with very narrow ferromagnetic resonant linewidth
IEEE Transactions on Magnetics,45(10):4290-4293 2009
Author:K. Ikeda, T. Suzuki, T. Sato


FeNiSiO/SiO2 multi-layer granular magnetic films with high-resistivity
Transactions of the Materials Research Society of Japan,34(1):9-13 2009
Author:K. Ikeda, T. Suzuki, T. Sato


Low Power Consumption and High Power Density Integrated DC-DC Converter for Portable Equipments
Proceedings of the IEEE Asian Solid-State Circuit Conference (ASSCC2008),:149-152 2008
Author:S. Sugahara, K. Yamada, M. Edo, T. Sato, K. Yamasawa


High Efficiency PWM Controlled Micro DC-DC Converter for Portable Electronic Equipments
IEICE Transactions on Communications,E91-B(11):3704-3711 2008
Author:S. Sugahara, K. Yamada, T. Kawashima, M. Edo, T. Sato, K. Yamasawa


Characterization of Novel Chip Temperature-Sensing Device Using Mn-Substituted Li-Zn-Cu Ferrite
IEEE Transactions on Magnetics,44(11):2985-2988 2008
Author:M. Naoe, M. Oishi, S. Okazaki, T. Sato, K. Yamasawa, Y. Miura


Preparation and Characterization of Nanofiber Nonwoven Textile for Electromagnetic Wave Shielding
IEEE Transactions on Magnetics,44(11):3107-3110 2008
Author:M. Sonehara, T. Sato, M. Takasaki, H. Konishi, K. Yamasawa, Y. Miura


Suppression of Sm Segregation and Improvement in Thermal Stability by Introducing Ru Underlayer in Co-Sm Amorphous Films
IEEE Transactions on Magnetics,44(11):3906-3909 2008
Author:K. Ikeda, T. Suzuki, T. Sato


Basic investigation of microtemperature sensor by means of a novel transmission-line technique using a temperature-sensitive Li-Zn-Cu ferrite substrate
Journal of the Magnetism and Magnetic Materials,320(20):949-953 2008
Author:M. Naoe, R. Takahashi, T. Omura, Y. Hotta, T. Sato, K. Yamasawa, Y. Miura


Magnetic properties of Co-Sm amorphous films in GHz band
Journal of the Magnetics Society of Japan,32(3):179-186 2008
Author:K. Ikeda, T. Suzuki, T. Sato


Synthesis and Characterization of Temperature Sensitive Li-Zn-Cu Ferrite
Japanese Journal of Applied Physics,47(1):550-553 2008
Author:M. Naoe, T. Omura, T. Sato, K. Yamasawa, Y. Miura


Ferromagnetic Resonance Simulation of Mn-Ir/Fe-Si Exchange-Coupled Film on Basis of LLG Equation Taking Exchange-Stiffness Dispersion Model into Account
Journal of the Magnetics Society of Japan,31(3):153-158 2007
Author:M. Sonehara, T. Ishikawa, K. Inagaki, T. Sato, K. Yamasawa, Y. Miura, H. Fujiwara


Analysis of Directional Coupler Using Magnetic/Dielectric Hybrid Transmission-Line for Cellular Phone
2006 Asia-Pacific Microwave Conference Proceedings,2:1384-1387 2006
Author:K. Takizawa, S. Mizuta, M. Nakazawa, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, U. Uehara, M. Munakata, M. Yagi


Relation between microwave complex permeability and ferromagnetic Fe-Si layer thickness in Mn-Ir/Fe-Si exchange-coupled film
IEEE Transactions on Magnetics,42(10):2984-2986 2006
Author:M. Sonehara, T. Sugiyama, T. Ishikawa, K. Inagaki, T. Sato, K. Yamasawa, Y. Miura


Suppression of insertion loss by slit patterning of a magnetic film in a CoFeB/polyimide hybrid thin-film coplanar line for a rf impedance matching device
Journal of Applied Physics,99:08P508 2006
Author:Nakayama, H. Yamamoto, Y. Mizoguchi, Y. Nakazawa, M. Sato, T. Yamasawa, K. Miura, Y. Miyake, Y. Akie,M . Uehara, Y. Munakata, M. Yagi, M.


MnIr/FeSi exchange-coupled multilayer film with plural ferromagnetic resonance absorptions for wideband noise filter
Journal of Applied Physics,99:08M309 2006
Author:Sonehara, M. Ishikawa, T. Sugiyama, T. Sato, T. Yamasawa, K. Miura, Y.


Directional Coupler Composed of CoFeB Metallic Magnetic Film/Polyimide Dielectric Film Hybrid Transmission-Line
2005 Asia-Pacific Microwave Conference Proceedings,:2819-2822 2005
Author:K. Takizawa, M. Nakazawa, T. Sato, K. Yamasawa, Y. Miura, M. Munakata, M. Yagi


Development of an Integrated RF Impedance Matching Device with LPF Function using a CoFeB Magnetic/Polyimide Dielectric Hybrid Thin-Fim Coplanar-Line
2005 Asia-Pacific Microwave Conference Proceedings,:720-722 2005
Author:H. Nakayama, T. Yamamoto, Y. Mizoguchi, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara, M. Munakata


Preparation and characterization of Mn-Ir/Fe-Si exchange-coupled multilayer film with Ru underlayer for high-frequency applications
IEEE Transactions on Magnetics,41(10):3511-3513 2005
Author:M. Sonehara, T. Sugiyama, T. Sato, K. Yamasawa, Y. Miura


A new wideband common-mode noise filter consisting of Mn-Zn ferrite core and copper/polyimide tape wound coil
IEEE Transactions on Magnetics,41(10):3571-3573 2005
Author:K. Yanagisawa, F. Zhang, T. Sato, K. Yamasawa, Y. Miura


A thin film spiral microstrip transmission-line using CoZrNb soft magnetic thin film for a quarter wavelength transformer
IEEE Transactions on Magnetics,41(10):3574-3576 2005
Author:H. Suzuki, N. Sugiyama, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara


A planar inductor using Mn-Zn ferrite/polyimide composite thick film for low-voltage and large-current dc-dc converter
IEEE Transactions on Magnetics,41(10):3991-3993 2005
Author:I. Kowase, T. Sato, K. Yamasawa, Y. Miura


FeSi/IrMn Exchange-Coupled Multilayer Film with Plural FMR absorptions
Transactions of the Materials Research Society of Japan,29(4):1735-1738 2004
Author:M. Sonehara, T. Sato, K. Yamasawa, Y. Miura, M. Yamaguchi


Fabrication of a common- mode noise filter for balanced-mode signal transmission using Mn-Zn ferrite particle/polyimide composite thick film
IEEJ Transactions on Fundamentals and Meterials,124(1):91-97 2004
Author:T. Sato, T. Kokai, M. Moroishi, K. Yamasawa, T. Sakuma, H. Karasawa, K. Hirasawa


Amplitude modulation effect of dc-dc converter noise on CMOS logic signal transmission on microstrip PCB
Proceedings of the IEEE International Telecommunications Energy Conference (INTELEC2003),:510- 514 2003
Author:K.-I. Nishijima, T. Sato, K. Yamasawa


Spiral type transmission line with a Mn-Zn ferrite core
IEEE Transactions on Magnetics,39(5):3205-3207 2003
Author:T. Sato, K. Sato, K. Yamasawa, F. Zhang, K. Yanagisawa


A study on hybrid thin film microstrip line composed of CoZrNb metallic magnetic film and Polyimide dielectric film
2002 Asia-Pacific Microwave Conference Proceedings,:602-605 2002
Author:T. Sato, S. Ikeda, K. Takizawa, and K. Yamasawa


Relation between power dissipation and signal transmission characteristic in CoZrNb/Polyimide hybrid microstrip line
Transactions of the Magnetics Society of Japan,2(5):377-383 2002
Author:T. Sato, S. Ikeda, H. Nakayama, K. Takizawa, and K. Yamasawa


Measurement of the source impedance of conducted emission using mode separable LISN: Conducted emission of a switching power supply
ELECTRICAL ENGINEERING IN JAPAN,139(2):72-78 2002
Author:J. Miyashita, M. Mitsuzawa, T. Karube, K. Yamasawa, T. Sato


A high sensitive multilayered parametric magnetic sensor
Proceedings of the International Conference on Electrical Engineering (ICEE 2001),3:1677-1680 2001
Author:K. Karasawa, H. Matsushima, T. Sato, K. Yamasawa, Y. Tanno


A thin film type magnetic/dielectric hybrid transmission-line with a large wavelength shortening
IEEE Transactions on Magnetics,37(4):2903-2904 2001
Author:S. Ikeda, T. Sato, A. Ohshiro, K. Yamasawa, T. Sakuma


A new multilayered common-mode filter on Ni-Zn ferrite substrate
IEEE Transactions on Magnetics,37(4):2900-2902 2001
Author:T. Sato, S. Ikeda, Y. Hara, K. Yamasawa, T. Sakuma


Multilayered transformer utilizing Mn-Zn ferrite and its application to a forward-type DC-DC converter
ELECTRICAL ENGINEERING IN JAPAN,135(4):1-8 2001
Author:T. Sato, H. Yokoyama, K. Yamasawa, K. Toya, S. Kobayashi, T. Minamisawa


FeCoBN magnetic thin film inductor for MHz switching micro DC-DC converters
IEEJ Transactions on Industrial Applications,121-D:84-89 2001
Author:T. Sato, K. Yamasawa, H. Tomita, T. Inoue, T. Mizoguchi


Thin film inductor for micro switching converters using a high resistive Fe-Zr-O film
International Power Electronics Conference 2000 Proceedings (IPEC2000),:315-319 2000
Author:Y. Sasaki, E. Komai, T. Hatanai, T. Sato, K. Yamasawa


Planar power inductor using FeCoBN magnetic film with high saturation magnetization and high electrical resistivity
International Power Electronics Conference 2000 Proceedings (IPEC2000),:303-308 2000
Author:T. Sato, K. Yamasawa, H. Tomita, T. Inoue, T. Mizoguchi


A study of parametric models applied to in-service life prediction of dry vacuum pump
Proceedings of IMACS Symposium on MATHEMATICAL MODELLING,1:111-114 2000
Author:A. Ishida, S. Konishi, T. Sato, K. Yamasawa


A new multilayered parametric magnetic sensor
Proceedings of the 2nd Magneto-Electronics International Symposium (Nagano magel’99),:319-322 1999
Author:K. Karasawa, H. Matsushima, Y. Tanno, T. Sato, K. Yamasawa


A small and thin common mode choke composed of multilayered transformer structure with high coupling coefficient
Proceedings of the 2nd Magneto-Electronics International Symposium (Nagano magel’99),:395-398 1999
Author:Y. Hara, T. Sato, K. Yamasawa, K. Toya, S. Kobayashi, T. Minamisawa


Device simulations of magnetic/dielectric hybrid transmission-lines by using electromagnetic field analysis
Proceedings of the 2nd Magneto-Electronics International Symposium (Nagano magel’99),:399-402 1999
Author:S. Ikeda, N. Shirai, K. Ito, A. Hirano, T. Sato, K. Yamasawa


Frequency-modulation type magnetic field sensor using transmission-line magnetic device
IEEE TRANSACTIONS ON MAGNETICS,35(5):3631-3633 1999
Author:S. Ikeda, T. Sato, K. Yamasawa


Sputter-deposited FeCoBC/AlNx multilayered film for wet-etching process
IEEE TRANSACTIONS ON MAGNETICS,35(5):3571-3573 1999
Author:H. Tomita, T. Inoue, T. Mizoguchi, T. Sato


A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite
IEEE TRANSACTIONS ON MAGNETICS,35(5):3538-3540 1999
Author:T. Inoue, M. Furukawa, T. Sato, K. Yamasawa, T. Takahashi, Y. Sasaki, Y. Yamamoto, T. Hatanai, A. Makino


The optimum chip size of a thin film reactor for a high-efficiency operation of a micro dc-dc converter
Record of the IEEE Power Electronics Specialists Conference (PESC’98),:1499-1503 1998
Author:S. Sugahara, M. Edo, T. Sato, K. Yamasawa


A new multi-polar flat transformer and its application to a planar type dc/dc converter
Record of the IEEE Power Electronics Specialists Conference (PESC’98),:1548-1554 1998
Author:T. Minamisawa, T. Sato, K. Yamasawa


Operation characteristics of a buck/boost converter using a layered inductor with high resistive Fe(Co-Fe)-M-O (M=Hf, Zr, rare-earth) films
Record of the IEEE Power Electronics Specialists Conference (PESC’98),:1555-1560 1998
Author:Y. Sasaki, S. Morita, T. Hatanai, A. Makino, T. Sato, K. Yamasawa


Transmission-line low pass filter for switching power supplies
Record of the IEEE Power Electronics Specialists Conference (PESC’98),:1972-1978 1998
Author:T. Sato, S. Ikeda, K. Yamasawa, T. Mizoguchi


The effect of magnetic film structure on the inductance of a planar inductor
IEEE TRANSACTIONS ON MAGNETICS,34(4):1372-1374 1998
Author:Inoue, T; Nishijima, K; Yatabe, S; Mizoguchi, T; Sato, T


New applications of nanocrystalline Fe(Co-Fe)-Hf-O magnetic films to micromagnetic devices
JOURNAL OF APPLIED PHYSICS,83(11):6658-6660 1998
Author:T. Sato, Y. Miura, S. Matumura, K. Yamasawa, S. Morita, Y. Sasaki, T. Hatanai, A. Makino


High frequency soft magnetic properties of nanocrystalline Fe-(Co)-Hf-O films with high electrical resistivity and their application to micro DC-DC converter
NANOSTRUCTURED MATERIALS,8(8):1025-1032 1997
Author:Y. Sasaki, S. Morita, T. Hatanai, A. Makino, T. Sato, K. Yamasawa


Application of nanocrystalline Fe (or Co-Fe)-Hf-O magnetic films with high electrical resistivity to micro DC-DC converters
IEEE TRANSACTIONS ON MAGNETICS,33(5):3310-3312 1997
Author:T. Sato, E. Komai, K. Yamasawa, T. Hatanai, A. Makino


5MHz switching micro dc-dc converter using planar inductor
Proceedings of the IEEE International Telecommunications Energy Conference (INTELEC’96),:485-490 1996
Author:T. Sato, T. Inoue, H. Tomita, S. Yatabe, K. Nishijima, Y. Tokai, M. Nameki, N. Saito, T. Mizoguchi


Epitaxial Fe72Co28(112) films grown on MgO(100) substrates
Japanese Journal of Applied Physics,34:1851-1854 1995
Author:H. Tomita, A. Sawabe, T. Sato, T. Mizoguchi


Simulation of Micro Magnetic Devices
IEEE Translation Journal on Magnetics in Japan,9(4):68-75 1994(Apr.)
Author:T. Sato, T. Mizoguchi, M. Sahashi


Oblique field annealing of CoZrNb amorphous magnetic thin film
IEEE Transactions on Magnetics,30(2):1336-1339 1994
Author:H. Tomita, T. Sato, T. Mizoguchi


A magnetic thin film inductor and its application to a MHz switching dc-dc converter
IEEE Transactions on Magnetics,30(2):217-223 1994
Author:T. Sato, H. Tomita, A. Sawabe, T. Inoue, T. Mizoguchi, M. Sahashi


Formula for dynamic power loss in ferrite cores taking into account displacement current
IEEE Transactions on Magnetics,29(6):3517-3519 1993
Author:Y. Sakaki, M. Yoshida, T. Sato


Planar inductor for very small dc-dc converters
IEICE Transactions on Communications,E75-B(11):1186-1191 1992
Author:T. Sato, M. Hasegawa, T. Mizoguchi, M. Sahashi


Study of high power planar inductor
IEEE Transactions on Magnetics,27(6):5277-5279 1991
Author:T. Sato, M. Hasegawa, T. Mizoguchi, M. Sahashi


Physical meaning of equivalent loss resistance of magnetic cores
IEEE Transactions on Magnetics,26(5):2894-2897 1990
Author:T. Sato, Y. Sakaki


Magnetization Mechanism of Polycrystalline Mn-Zn Ferrite in MHz Band
IEEE Translation Journal on Magnetics in Japan,3(7):531-533 1988(Jul.)
Author:T. Sato, Y. Sakaki


Very low loss ultrathin Co based amorphous ribbon cores
Journal of Applied Physics,64(10):6050-6052 1988
Author:M. Yagi, T. Sato, Y. Sakaki, T. Sawa, K. Inomata


Discussion on eddy current loss under square wave voltage excitation
IEEE Transactions on Magnetics,24(6):2904-2906 1988
Author:T. Sato, Y. Sakaki


100kHz - 10MHz iron loss measuring system
IEEE Transactions on Magnetics,23(5):2593-2595 1987
Author:T. Sato, Y. Sakaki


A high frequency iron loss measuring system
IEEE Transactions on Magnetics,20(5):1729-1731 1984
Author:T. Katane, T. Yamaguchi, T. Ito, T. Sato, Y. Sakaki


Large signal eddy current losses beyond 100kHz
IEEE Transactions on Magnetics,20(5):1487-1489 1984
Author:Y. Sakaki, T. Sato


Loss evaluation in converter transformer cores
Proceedings of the IEEE International Telecommunications Energy Conference (INTELEC’83),:408-412 1983
Author:Y. Sakaki, T. Sato, T. Ito


Presentations
Fe-based Composite Magnetic Core for GaN Power Device Switching Converter (Invited)
International Symposium on Advanced Power Packaging 2019 (ISAPP2019), Osaka, Japan 2019(Oct.)
Author:Toshiro Sato


Fe-based Metal composite Magnetic Core and Its Application to High-frequency Switching DC-DC Converter (Invited)
IEEE Power Electronics Society , 2018 International Workshop on Power Supply On Chip, 4-1, NCTU, Hsinchu, Taiwan 2018(Oct.)
Author:Toshiro Sato, Tsutomu Mizuno, Makoto Sonehara, Kousuke Miyaji, Tsuyoshi Funaki, Takaaki Ibuchi


Fundamental Study on Magnetorheological Fluid Brakes for Regional Jets
Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM 2018) , Yogyakarta, INDONESIA 2018(Jul.)
Author:Taichiro Sumi, Norihiro Sato, Makoto Sonehara, Toshiro Sato, Hiroyuki Wakiwaka, Yoshimi Kikuchi


Fundamental Study on Eddy Current Braking Using DC/AC Excitaion Methods for Regional Jets
Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM 2018) , Yogyakarta, INDONESIA 2018(Jul.)
Author:Norihiro Sato, Taichiro Sumi, Makoto Sonehara, Toshiro Sato, Hiroyuki Wakiwaka, Yoshimi Kikuchi


Fabrication of ferromagnetic Co-MgF2 granular film with high transmittance and large Faraday-effect for optical magnetic field sensor
International Magnetics Conference 2018 (INTERMAG2018), Singapore 2018(Apr.)
Author:Mitsunori Miyamoto, Toshiya Kubo, Yuta Fujishiro, Kenta Shiota, Makoto Sonehara, Toshiro Sato


Novel making method of high resistive surface layer of Fe-based amorphous powder by surface-modification using two-step acid solution process
International Magnetics Conference 2018 (INTERMAG2018), Singapore 2018(Apr.)
Author:Kanako Sugimura, Naoki Yabu, Makoto Sonehara, Toshiro Sato


Fabrication and evaluation of composite magnetic core using iron-based amorphous alloy powder with different particle-size distribution
International Magnetics Conference 2018 (INTERMAG2018), Singapore 2018(Apr.)
Author:Naoki Yabu, Kanako Sugimura, Yutaro Inagaki, Daiki Ueda, Makoto Sonehara, Toshiro Sato


A 120dB-Ohm 16MHz Pseudo Differential CMOS Analog Front End Circuit for Optical Probe Current Sensor
International Conference on Solid State Devices and Materials 2017 (SSDM2017), Sendai, Japan 2017(Sep.)
Author:Takaharu Uekura, Kousuke Oyanagi, Makoto Sonehara, Toshiro Sato, and Kousuke Miyaji


LLC resonant converter using magnetocated wire and iron-based metal composite core
International Magnetics Conference 2017 (INTERMAG2017), Dublin, Ireland 2017(Apr.)
Author:Tatsuya Yamamoto, Y. Konno, T. Dobashi, Kanako Sugimura, Toshiro Sato, Y. Bu, Tsutomu Mizuno


Characterization of UHF band LC filter with RF spiral inductor using carbonyl-iron-particle/epoxy composite magnetic and chip capacitor
International Magnetics Conference 2017 (INTERMAG2017), Dublin, Ireland 2017(Apr.)
Author:Makoto Sonehara, Yuki Miyajima, Sota Yamaguchi, Toshiro Sato


Surface-oxidized amorphous alloy powder/epoxy resin composite bulk magnetic core and its application to MHz band switching LLC resonant converter
International Magnetics Conference 2017 (INTERMAG2017), Dublin, Ireland 2017(Apr.)
Author:Kanako Sugimura, Daisuke Shibamoto, Tatsuya Yamamoto, Ryosuke Hirayama, Atsuya Ueno, Kelvin Lai Siong Ong, Naoki Yabu, Makoto Sonehara, Toshiro Sato, Tsutomu Mizuno, Hideaki Mizusaki


Magnetic Properties of Ni-Zn Ferrite/Metal Composite Core in MHz Range
61st Annual Conference on Magnetism and Magnetic Materials, New Orleans, LA, USA 2016(Nov.)
Author:Satoshi Mori, Takeshi Mitsuoka, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita


Surface-oxidized Carbonyl-iron powder/epoxy composite bulk magnetic core and its application to a MHz switching buck dc-dc converter
MMM-Intermag 2016 Joint Conference, San Diego, CA, USA 2016(Jan.)
Author:Kanako Sugimura, Atsuya Ueno, Daisuke Shibamoto, Kosuke Sato, Makoto Sonehara, Toshiro Sato


Fundamental study of non-contact water salinity sensor by using electromagnetic means for seawater desalination plants
MMM-Intermag 2016 Joint Conference, San Diego, CA, USA 2016(Jan.)
Author:Nguyen Van Toai, Makoto Sonehara, Toshiro Sato


Formation of high electrical-resistivity thin surface layer on Carbonyl-iron powder (CIP) and thermal stability of nanocrystalline structure and curling magnetic structure of CIP
MMM-Intermag 2016 Joint Conference, San Diego, CA, USA 2016(Jan.)
Author:Kanako Sugimura, Yuki Miyajima, Fumitaka Hayashi, Makoto Sonehara, Toshiro Sato, Nobuyuki Zettsu, Katsuya Teshima, Hideaki Mizusaki


Development of Simplified Quasi Transmission Line Thin Film Common Mode Filter With Air-Core Spiral Inductor and MIM Capacitors for Cell Phone
International Conference on Microwave Magnetics 2014 (ICMM2014), Sendai, Japan 2014(Jul.)
Author:Yasuaki Yoshisaku,Ryuji Nakagomi, Yuki Watanabe, Hidetoshi Nakayama, Makoto Sonehara, Toshiro Sato


Q-factor increase of RF spiral inductor using composite magnetic core
International Conference on Microwave Magnetics 2014 (ICMM2014), Sendai, Japan 2014(Jul.)
Author:Kazuaki Furihata, Jun Koguchi, Shingo Tanaka, Makoto Sonehara and Toshiro Sato


Embedded planar power inductor in organic interposer for package-level DC power gird
International Magnetics Conference 2014 (INTERMAG2014), Dresden, Germany 2014(May)
Author:Yuichiro Yazaki, Kazuma Ishidate, Kazuhiro Hagita, Yuta Kondo, Saki Hattori, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita, Tetsuro Watanabe, Yuto Seino


Influence of Initial Surface Roughness on Severe Wear Volume for SUS304 Austenitic Stainless Steels
International Conference on Tribology and Interface Engineering 2013 (ICTIE2013), Venezia, Italy 2013(Nov.)
Author:Akira Kawamura,Kazuyoshi Ishida,Katsuzo Okada, Toshiro Sato


Zn-Co Substituted Ferrite Films Prepared by Solution Process
11th International Conference on Ferrites (ICF11), Okinawa, Japan 2013(Apr.)
Author:Tetsuro Watanabe, Kiminori Ushida, Kenichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada, Kazuhiro Hagita, Makoto Sonehara, Toshiro Sato


Efficiency Increase in On-Chip Buck Converter by Introduction of High Permeability Material to Inductor on Interposer
11th International Conference on Ferrites (ICF11), Okinawa, Japan 2013(Apr.)
Author:Hiroshi Fuketa, Yasuhiro Shinozuka, Koichi Ishida, Makoto Takamiya, Tomoharu Fujii, Hiroshi Shimizu, Kazutaka Kobayashi, Toshiro Sato, Takayasu Sakurai


Magnetic Properties of Spin-sprayed Ferrite Film Deposited on Glass/Epoxy Build-up Layer in Organic Interposer Substrate
11th International Conference on Ferrites (ICF11), Okinawa, Japan 2013(Apr.)
Author:Kazuhiro Hagita, Hiroki Kobayashi, Fumihiro Sato, Yuichiro Yazaki, Makoto Sonehara, Toshiro Sato, Tetsuro Watanabe, Nobuhiro Matsushita, Tomoharu Fujii, Hiroshi Shimizu, Kazutaka Kobayashi


Carbonyl-iron/epoxy composite magnetic core for planar power inductor used in POL DC-DC converter for package-level power grid
12th Joint MMM-Intermag Conference, Chicago, IL, USA 2013(Jan.)
Author:Yuichiro Sugawa, Kazuma Ishidate, Makoto Sonehara, Toshiro Sato


Characterization of current sensor with variable sensitivity and measuring range using bias magnetic field of a hard magnetic film magnetized by pulsed-current method
12th Joint MMM-Intermag Conference, Chicago, IL, USA 2013(Jan.)
Author:Makoto Sonehara, Hiroki Kamada, Satoko Iida, Toshiro Sato


Magnetic core power inductor embedded in plastic interposer toward power supply integrated in LSI Package (Invited)
The 3rd. International Workshop on Power Supply on Chip 2012, San Francisco, CA, USA , 7-2 2012(Nov.)
Author:Toshiro Sato, Makoto Sonehara, Hiroki Kobayashi, Fumihiro Sato, Kazuhiro Hagita, Rie Takeda, Nobuhiro Matsushita, Tomohiro Fujii, Shinji Nakazawa, Hiroshi Shimizu, Kazutaka Kobayashi, Yasuhiro Shinozuka, Yuji Fuketa, Makoto Takamiya, Takayasu Sakurai


A study of Zn-ferrite film planar power inductor embedded in LSI interposer for integrated power supply
International Conference of the Asian Union of Magnetic Societies 2012 (ICAUMS2012), Nara, Japan 2012(Oct.)
Author:Hiroki Kobayashi, Fumihiro Sato, Kazuhiro Hagita, Rie Takeda, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita, Kazutaka Kobayashi, Hiroshi Shimizu, Tomohiro Fujii, Koichi Ishida, Takayasu Sakurai


Linearity evaluation for optical probe current sensor using the magnetic Kerr effect
International Conference of the Asian Union of Magnetic Societies 2012 (ICAUMS2012), Nara, Japan 2012(Oct.)
Author:Shin Suzuki, Hiroki Morisaki, Makoto Sonehara, Keisuke Ogawa, Toshiro Sato


Development of Micro Magnetic Devices for High-Frequency Power Conversion and RF Applications (Invited)
2nd International Conference of the Asian Union of Magnetics Societies (ICAUMS2012) , :5aB-3 2012(Oct.)
Author:Toshiro Sato, Makoto Sonehara, Kenji Ikeda, Hidetoshi Nakayama, Kazutaka Takizawa


A possibility of tunable soft magnetic inductive device using bias magnetic field of a hard magnetic film magnetized by pulsed-current method
International Conference on Microwave Magnetics 2012 (ICMM2012), Kaiserslautern, Germany 2012(Aug.)
Author:Yosuke Obinata, Megumi Yuki, Makoto Sonehara, Yutaka Kuramoto, Kunihiko Suzuki, Kenji Ikeda, Toshiro Sato


A possibility of tunable soft magnetic inductive device using DC bias magnetic field of hard magnetic film magnetized by pulse current method
International Magnetics Conference 2012 (INTERMAG2012), Vancouver, Canada 2012(May)
Author:Megumi Yuki, Kenji Ikeda, Yutaka Kuramoto, Kunihiko Suzuki, Makoto Sonehara, Toshiro Sato


Relation between high-frequency properties and direction of anisotropy magnetic field in magnetic thin film for RF inductor
International Magnetics Conference 2012 (INTERMAG2012), Vancouver, Canada 2012(May)
Author:Makoto Sonehara, Toshiro Sato


Relation between high-frequency properties and angle of anisotropy magnetic field in magnetic thin film for spiral inductor
International Magnetics Conference 2011 (INTERMAG2011), Taipei, Taiwan 2011(Apr.)
Author:Makoto Sonehara, Keisuke Ogawa, Kenji Ikeda, Toshiro Sato


Fabrication of planar power inductor for embedded passives in LSI package for hundreds megahertz switching DC-DC buck converter
International Magnetics Conference 2011 (INTERMAG2011), Taipei, Taiwan 2011(Apr.)
Author:Hideyuki Ito, Asako Takeuchi, Shinya Okazaki, Hiroki Kobayashi, Yuichiro Sugawa, Akihiro Takeshima, Makoto Sonehara, Nobuhiro Matsushita, Toshiro Sato


Increase of Q-factor of RF magnetic thin film inductor by introducing multi conductor line spiral coil and slit-patterned magnetic thin film
International Magnetics Conference 2011 (INTERMAG2011), Taipei, Taiwan 2011(Apr.)
Author:Takayuki Maruyama, Yosuke Obinata, Makoto Sonehara, Kenji Ikeda, Toshiro Sato


Development of Zn-Ferrite Thick Film Planar Power Inductor
International Conference on Microwave Magnetics 2010 (ICMM2010), Boston, MA, USA 2010(Jun.)
Author:Shinya Okazaki, Asako Takeuchi, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita


CoFeSiO/SiO2 Magnetic Thin Film Inductor for CSP RF-IC
International Conference on Microwave Magnetics 2010 (ICMM2010), Boston, MA, USA 2010(Jun.)
Author:Takayuki Maruyama, Megumi Yuki, Daisuke Kobayashi, Tomotake Minemura, Makoto Sonehara, Kenji Ikeda, Toshiro Sato


Strain sensor using stress-magnetoresistance effect of Ni-Fe/Mn-Ir exchange-coupled magnetic film
11th Joint MMM-Intermag Conference, Washington DC, USA 2010(Jan.)
Author:T. Shinohara, M. Sonehara, T. Sato, K. Yamasawa, Y. Miura


Cross-talk suppression in high density printed circuit board using magnetic composite filled in spacing between signal lines
International Magnetics Conference 2009 (INTERMAG2009), Sacramento, CA, USA 2009(May)
Author:S. Kayama, M. Sonehara,T. Sato,K. Yamasawa,Y. Miura


CoFeSiO/SiO2 multilayer granular film with very narrow ferromagnetic resonant linewidth
International Magnetics Conference 2009 (INTERMAG2009), Sacramento, CA, USA 2009(May)
Author:K. Ikeda, T. Suzuki, T. Sato


Development of electromagnetic wave shielding textile by electroless Ni-based alloy plating
International Magnetics Conference 2009 (INTERMAG2009), Sacramento, CA, USA 2009(May)
Author:M. Sonehara,T. Sato,K. Yamasawa,Y. Miura


Experimental results on electromagnetic wave shielding using nano-fiber textile with metallic magnetic material
6th International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM2008), Madrid, Spain 2008(May)
Author:Makoto Sonehara,Toshiro Sato,Midori Takasaki,Hajime Konishi,Kiyohito Yamasawa,Yoshimasa Miura


Fabrication of novel chip temperature sensing device using Mn substituted Li-Zn-Cu ferrite
International Magnetics Conference 2008 (INTERMAG2008), Madrid, Spain 2008(May)
Author:Masayuki Naoe, Masayuki Oishi, Shinya Okazaki, Toshiro Sato, Kiyohito Yamasawa, Yoshimasa Miura
Abstract:要旨


Preparation and characterization of nano-fiber nonwoven textile for electromagnetic wave shielding
International Magnetics Conference 2008 (INTERMAG2008), Madrid, Spain 2008(May)
Author:Makoto Sonehara,Toshiro Sato,Midori Takasaki,Hajime Konishi,Kiyohito Yamasawa,Yoshimasa Miura
Abstract:要旨


Suppression of Sm segregation and improvement of thermal stability by introducing Ru underlayer in Co-Sm amorphous films
International Magnetics Conference 2008 (INTERMAG2008), Madrid, Spain 2008(May)
Author:Kenji Ikeda, Toshimasa Suzuki, Toshiro Sato
Abstract:要旨


Development of Integrated Magnetic Thin Film Devices for RF Applications (Invited)
2008 Asian Magnetics Conference , (EC-02):269 2008
Author:T. Sato, M. Sonehara, K. Takizawa, H. Nakayama, K. Yamasawa, Y. Miura


Basic Investigation of Micro Temperature Sensor by means of A Novel Transmission-Line Technique using A Temperature Sensing Li-Zn-Cu Ferrite Substrate
18th Soft Magnetic Materials Conference 2007, Cardiff, UK 2007(Sep.)
Author:M. Naoe, R. Takahashi, T. Omura, Y. Hotta, T. Sato, K. Yamasawa, and Y. Miura


Mn-Ir/Fe-Si exchange-coupled film and its microwave magnetic properties
2007 International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2007), Nagano, Japan 2007(Jun.)
Author:M. Sonehara, K. Inagaki, T. Sato, K. Yamasawa, Y. Miura


Synthesis and characterization of Temperature Sensitive Li-Zn-Cu Ferrite
2007 International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2007), Nagano, Japan 2007(Jun.)
Author:M. Naoe, T. Omura, T. Sato, K. Yamasawa, and Y. Miura


Fabrication of magnetic thin film directional coupler for mobile phones
5th International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM5), Baltimore, MD, USA 2007(Jan.)
Author:K. Takizawa, M. Nakazawa, K. Sugiura, S. Mizuta, A. Hashimoto, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara, M. Munakata, M. Yagi


Investigation of high frequency permeability of Mn-Ir/Fe-Si exchange-coupled film on the basis of micromagnetic simulator
3rd Asia Forum on Magnetics, Matsue, Japan 2006(Sep.)
Author:M. Sonehara, T. Ishikawa, K. Inagaki, T. Sato, K. Yamasawa, Y. Miura, H. Fujiwara


Li-Zn-Cu ferrite for temperature sensing
3rd Asia Forum on Magnetics, Matsue, Japan 2006(Sep.)
Author:M. Naoe, T. Omura, R. Takahashi, T. Sato, Y. Yamasawa, and Y. Miura


Temperature characteristics of the polycrystalline Li-Zn-Cu ferrite
International Conference on Magnetism (ICM2006), Kyoto, Japan 2006(Aug.)
Author:M. Naoe, T. Omura, R. Takahashi, T. Sato, K. Yamasawa, and Y. Miura


Fabrication of an insulating type transmission-line transformer for high frequency inverter for discharge lamp
International Magnetics Conference 2006 (INTERMAG2006), San Diego, CA, USA 2006(May)
Author:T. Miyazaki, A. Kikuchi, T. Sato, K. Yamasawa, Y. Miura


Fabrication and evaluation of the directional coupler using CoFeB metallic magnetic film/polyimide dielectric film hybrid transmission-line
International Magnetics Conference 2006 (INTERMAG2006), San Diego, CA, USA 2006(May)
Author:K. Takizawa, S. Mizuta, M. Nakazawa, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara, M. Munakata, M. Yagi


Relation between microwave complex permeability and ferromagnetic Fe-Si layer thickness in Mn-Ir/Fe-Si exchange-coupled film
International Magnetics Conference 2006 (INTERMAG2006), San Diego, CA, USA 2006(May)
Author:M. Sonehara, T. Sugiyama, T. Ishikawa, K. Inagaki, S. Ikeda, T. Sato, K. Yamasawa, Y. Miura
Abstract:要旨


Suppression of insertion loss by slit-patterning of a magnetic film on a CoFeB/Polyimide hybrid thin-film coplanar-line for a RF impedance matching device
50th Conference on Magnetism and Magnetic Materials, San Jose, CA, USA 2005(Nov.)
Author:H. Nakayama, T. Yamamoto, Y. Mizoguchi, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara, M. Munakata, M. Yagi
Abstract:要旨


Mn-Ir/Fe-Si exchange-coupled multilayer film with plural FMR absorptions for wideband noise filter
50th Conference on Magnetism and Magnetic Materials, San Jose, CA, USA 2005(Nov.)
Author:M. Sonehara, T. Ishikawa, T. Sugiyama, T. Sato, K. Yamasawa, Y. Miura
Abstract:要旨


A coplanar-coupled-line common-mode filter using CoZrNb magnetic thin film for GHz frequency band
International Magnetics Conference 2005 (INTERMAG2005), Nagoya, Japan 2005(Apr.)
Author:Y. Sudo, K. Watanabe, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara


Latest activities on the high frequency micromagnetic devices and materials in Japan (invited)
3rd International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM3), Sendai, Japan 2005(Apr.)
Author:Toshiro Sato


Preparation and characterization of Mn-Ir/Fe-Si exchange-coupled multilayer film with Ru underlayer for high-frequency micromagnetic devices
International Magnetics Conference 2005 (INTERMAG2005), Nagoya, Japan 2005(Apr.)
Author:M. Sonehara, T. Sugiyama, T. Sato, K. Yamasawa, Y. Miura
Abstract:要旨


A wideband common-mode noise filter with a Mn-Zn ferrite and Cu/polyimide tape wound coil for switching power supplies used in electronic measuring instruments
International Magnetics Conference 2005 (INTERMAG2005), Nagoya, Japan 2005(Apr.)
Author:K. Yanagisawa, F. Zhang, T. Sato, K. Yamasawa, Y. Miura
Abstract:要旨


A thin film spiral microstrip transmission-line using CoZrNb soft magnetic thin film for a quarter wavelength transformer
International Magnetics Conference 2005 (INTERMAG2005), Nagoya, Japan 2005(Apr.)
Author:H. Suzuki, N. Sugiyama, T. Sato, K. Yamasawa, Y. Miura, Y. Miyake, M. Akie, Y. Uehara
Abstract:要旨


A planar inductor using Mn-Zn ferrite/polyimide composite thick film for low-voltage, large-current dc-dc converter
International Magnetics Conference 2005 (INTERMAG2005), Nagoya, Japan 2005(Apr.)
Author:I. Kowase, T. Sato, K. Yamasawa, Y. Miura
Abstract:要旨


FeSi/IrMn exchange coupled multilayer film with plural FMR absorptions
IUMRS-ICAM 2003, Yokohama, Japan 2003(Oct.)
Author:Makoto Sonehara, Toshiro Sato, Kiyohito Yamasawa, Yoshimasa Miura, Masahiro Yamaguchi


Magnetic thin film inductor for MHz switching dc-dc converter (invited)
2rd International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM2), Boston, MA, USA 2003(Apr.)
Author:Toshiro Sato


Spiral type transmission line with a Mn-Zn ferrite core
International Magnetics Conference 2003 (INTERMAG2003), Boston, MA, USA 2003(Apr.)
Author:Toshiro Sato, Kousuke Sato, Kiyohito Yamasawa, Fuchun Zhang, Koichi Yanagisawa
Abstract:要旨


A new multilayered common-mode filter on Ni-Zn ferrite substrate
8th Joint MMM-Intermag Conference, San Antonio, TX, USA 2001(Jan.)
Author:T. Sato, S. Ikeda, Y. Hara, K. Yamasawa, T. Sakuma
Abstract:要旨


Frequency-modulation type magnetic field sensor using transmission-line magnetic device
International Magnetics Conference 1999 (INTERMAG1999), Kyongju, Korea 1999(May)
Author:S. Ikeda, T. Sato, K. Yamasawa
Abstract:要旨


Sputter-deposited FeCoBC/AlNx multilayered film for wet-etching process
International Magnetics Conference 1999 (INTERMAG1999), Kyongju, Korea 1999(May)
Author:H. Tomita, T. Inoue, T. Mizoguchi, T. Sato
Abstract:要旨


A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite
International Magnetics Conference 1999 (INTERMAG1999), Kyongju, Korea 1999(May)
Author:T. Inoue, M. Furukawa, T. Sato, K. Yamasawa, T. Takahashi, Y. Sasaki, Y. Yamamoto, T. Hatanai, A. Makino
Abstract:要旨


New applications of nanocrystalline Fe(Co-Fe)-Hf-O magnetic films to micromagnetic devices
7th Joint Intermag-MMM Conference, San Francisco, CA, USA 1998(Jan.)
Author:T. Sato, Y. Miura, S. Matumura, K. Yamasawa, S. Morita, Y. Sasaki, T. Hatanai, A. Makino
Abstract:要旨


Application of nanocrystalline Fe (or Co-Fe)-Hf-O magnetic films with high electrical resistivity to micro DC-DC converters
International Magnetics Conference 1997 (INTERMAG1997), New Orleans, LA, USA 1997(Apr.)
Author:T. Sato, E. Komai, K. Yamasawa, T. Hatanai, A. Makino
Abstract:要旨


Study of high power planar inductor
5th Joint Intermag-MMM Conference, Pittsburgh, PA, USA 1991(Jun.)
Author:T. Sato, M. Hasegawa, T. Mizoguchi, M. Sahashi
Abstract:要旨


Very low loss ultrathin Co based amorphous ribbon cores
4th Joint Intermag-MMM Conference, Vancouver, Canada 1988(Jul.)
Author:M. Yagi, T. Sato, Y. Sakaki, T. Sawa, K. Inomata
Abstract:要旨


Discussion on eddy current loss under square wave voltage excitation
4th Joint Intermag-MMM Conference, Vancouver, Canada 1988(Jul.)
Author:T. Sato, Y. Sakaki
Abstract:要旨


100kHz - 10MHz iron loss measuring system
International Magnetics Conference 1987 (INTERMAG1987), Tokyo, Japan 1987(Apr.)
Author:T. Sato, Y. Sakaki
Abstract:要旨


A high frequency iron loss measuring system
International Magnetics Conference 1984 (INTERMAG1984), Hamburg, Germany 1984(Apr.)
Author:T. Katane, T. Yamaguchi, T. Ito, T. Sato, Y. Sakaki
Abstract:要旨


Large signal eddy current losses beyond 100kHz
International Magnetics Conference 1984 (INTERMAG1984), Hamburg, Germany 1984(Apr.)
Author:Y. Sakaki, T. Sato
Abstract:要旨