Faculty Profiles - FUKUMOTO Yuki

Papers - FUKUMOTO Yuki

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Imbalance difference model for prediction of unintentional radiated emission from 10-wire power cable using for power line communication Reviewed

Matsushima T., Okumura H., Kuwabara N., Fukumoto Y.

Wireless Networks 30 ( 5 ) 3599 - 3606 2024.07

Analysis of Degradation of Transmission Characteristics of Underwater Antenna Due to Metal Enclosure of Autonomous Underwater Vehicle Reviewed International journal

Matsumura Shoichi, Matsushima Tohlu, Fukumoto Yuki, Eguchi Kazuhiro

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 437 - 440 2024.05

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

The Autonomous Underwater Vehicle (AUV) is anticipated as a means of collecting underwater visual information using its built-in camera. While underwater radio wave communication via underwater antennas has been developed as a means of information collection, it is expected that the metal casing of AUV may adversely affect the transmission characteristics of antennas in underwater radio wave communication. Therefore, this report evaluates the impact of AUV's metal casing on antenna-to-antenna communication using an electromagnetic field simulator. The evaluation indicates that when the size of the antennas is larger than the AUV's metal casing, the impact on transmission characteristics is minimal even when the AUV is positioned between the antennas. On the other hand, when the metal casing is larger than the antenna size, the transmission characteristics between antennas degrade due to eddy currents flowing in the metal casing induced by antenna currents. Consequently, it is suggested that when attaching underwater antennas to AUVs, maintaining relatively good transmission characteristics, even with smaller antennas, is possible by appropriately configuring the size relationship and placement of the metal casing relative to the antennas.

DOI： 10.34385/proc.82.thuam1a.5

CiNii Research

Investigation of Calculation Accuracy for Line Constants of Transmission Line Constructed With Cable and Ground Plane Reviewed International journal

Kuwabara Nobuo, Matsushima Tohlu, Fukumoto Yuki, Enoki Ryouya

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 186 - 189 2024.05

Authorship：Last author Language：English Publishing type：Research paper (international conference proceedings)

The transmission line constructed with cable and ground plane is one of the radiated emission sources. Therefore, the characteristics of the line should be investigated to achieve electromagnetic compatibility. The numerical analysis has the merit that the characteristics can be investigated effectively, but the perfect modeling of this transmission line is difficult. In this paper, we evaluated the calculation accuracy from 0.1 MHz to 1000 MHz by comparing the calculating line constants with the measuring values. As a result, it was found that the characteristic impedance and phase constant can be calculated with a certain degree of accuracy, but the deviation of the attenuation constant is large.

DOI： 10.34385/proc.82.tuepm1a.4

CiNii Research

Development of Emulator Simulating Transmission of Undersea Radio Communication Reviewed International journal

Semba Takuto, Kawamoto Ayumu, Matsushima Tohlu, Fukumoto Yuki, Eguchi Kazuhiro, Wakisaka Toshiyuki

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 429 - 432 2024.05

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

The authors' research group is engaged in research and development of undersea radio communication technology. To improve communication efficiency, antenna characteristic and communication system are being developed through actual measurement. However, it is not easy to conduct large-scale measurement because of the time and cost required for preparation. Therefore, an undersea communication emulator that simulates undersea radio wave attenuation is being built to simplify large-scale experiment. In this paper, an undersea communication emulator of the transmission characteristic obtained by actual measurement is fabricated, and comparison of transmission characteristic and communication performance are shown through communication experiment. As a result of evaluating the communication characteristics of the fabricated emulator, it was confirmed that the transmission characteristic was expressed with a difference of less than 1 dB in a bandwidth of approximately 85 % of the carrier frequency, and that the transmission rate could be simulated with an accuracy of less than 1 Mbps.

DOI： 10.34385/proc.82.thuam1a.3

CiNii Research

Comparison of the Dependence of Wiring Lengths of Radiated Immunity of Harnesses Connecting Automotive Communication Equipment Reviewed International journal

Kagawa Akito, Inoue Mao, Matsushima Tohlu, Fukumoto Yuki

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 457 - 460 2024.05

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

In this report, we compared the immunity characteristics of wiring harnesses connecting automotive communication equipment at different wiring lengths. The communication behavior of an automotive harness connected to an evaluation module equipped with automotive Ethernet and exposed to radiated electromagnetic noise was compared for different wiring lengths. The S-parameters were measured under the same wiring conditions, and the frequency characteristics of the amount of noise applied were derived and compared with the length of the wiring. A reverberation chamber was used for the evaluation. From the results of each evaluation, changes in immunity characteristics due to differences in wiring length were confirmed for each frequency of electromagnetic waves, but no correlation was observed between communication quality characteristics and the results of S-parameter measurement. On the other hand, the frequency characteristics of the amount of noise applied also changed with the difference in wiring length, suggesting that a stable evaluation is possible with longer wiring lengths.

DOI： 10.34385/proc.82.thuam1c.1

CiNii Research

Communication Speed Estimation of Undersea Wavelet-OFDM Communication Under EM Noise Environment Reviewed International journal

Motomura Shiryu, Semba Takuto, Wakisaka Toshiyuki, Matsushima Tohlu, Fukumoto Yuki, Eguchi Kazuhiro

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 433 - 436 2024.05

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

As the marine business expands, there is a growing demand for real-time capturing of autonomous underwater vehicles (AUVs) status using radio frequency communications. On the other hand, electromagnetic noise emitted by AUVs can interfere with communications.To investigate the impact of electromagnetic noise in undersea Wavelet-OFDM communication, the author constructed an experimental setup that simulates the radio wave transmission characteristics of underwater antennas without the experimental environment in the sea and introduced external noise to assess communication speed. The authors compared the noise power induced in the receiver to the communication speed using the proposed evaluation setup.
The results shows that when the distance between the loop antennas was 1 m, communication was disabled by applying a -90 dBm disturbance. Additionally, the author proposed a method to estimate communication speed using transmission characteristics and measured electromagnetic noise. The communication speeds calculated using the proposed method agreed with the measured results with a maximum error of 1.65 Mbps. Improving accuracy remains a challenge for future research.

DOI： 10.34385/proc.82.thuam1a.4

CiNii Research

Application of the Impedance Balance Method to Electric Compressor System With an Integrated Mechanical and Electrical Structure Reviewed International journal

Fujimura Makoto, Muto Fumiya, Matsushima Tohlu, Fukumoto Yuki, Takada Kohei, Kobayashi Koji

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 66 - 69 2024.05

Authorship：Last author Language：English Publishing type：Research paper (international conference proceedings)

The impedance balance method is used as a countermeasure against electromagnetic noise in power electronic circuits. In a previous study, the impedance balance method was used to reduce the common-mode voltage in a three-phase inverter circuit. However, it has been difficult to reduce common-mode voltage using conventional methods in an electric compressor system with an integrated mechanical and electrical structure, where the three-phase inverter and motor are housed in a single housing. This research describes a method to reduce the common-mode voltage in an electric compressor system with an integrated mechanical and electrical structure, using an impedance balance method. The first is to reduce the impedance of the balancing elements added to the circuit, and the second is to increase the impedance of the three three-phase output line connecting the three-phase inverter and the motor. By combining these two methods, the frequency bandwidth of the reduction effect was expanded from 2 MHz to 30 MHz, and a reduction in common-mode voltage of up to 30 dB was confirmed.

DOI： 10.34385/proc.82.monpm2c.2

CiNii Research

Analysis of Mode Conversion Using Modal Equivalent Circuits for Immunity Evaluation of High-Speed Communication Equipment Reviewed International journal

Kawashima Takumi, Wakita Kazuya, Kaku Yoshifumi, Matsushima Tohlu, Fukumoto Yuki

IEICE Proceeding Series ( The Institute of Electronics, Information and Communication Engineers ) 82 333 - 336 2024.05

Authorship：Last author Language：English Publishing type：Research paper (international conference proceedings)

In this report, the mechanism of mode conversion of interfering electromagnetic waves injected into communication equipment from coaxial cables to in-vehicle communication modules is evaluated and clarified from the viewpoint of immunity.A mode conversion equivalent circuit was used for this purpose.
Considering radiated immunity, the applied electromagnetic field induces a common-mode current in the coaxial cable, which propagates through the cable to the signal line inside the enclosure via a connector.
When microstrip lines are used within a printed circuit board, the imbalance difference between the two transmission lines causes a conversion from common-mode current to normal-mode voltage.
Furthermore, when the imbalance difference is small, the parasitic inductance between the ground connections at the connectors is dominant in the mode conversion.
To evaluate these phenomena, a mode transformation circuit with ideal transformers was created.
The circuit simulations were conducted using the model and a modal transmission line.
The obtained results showed the same trend as that of the 3D electromagnetic field simulation.

DOI： 10.34385/proc.82.wedpm1a.1

CiNii Research

Wavelet OFDM Wireless Communication System for Autonomous Underwater Vehicles Using Loop-Shaped Antennas in Underwater Environments Reviewed

Hasaba R., Eguchi K., Wakisaka T., Hirokawa J., Hirose M., Matsushima T., Fukumoto Y., Nishida Y., Ishii K.

IEEE Access 2024.01

Microwave Patch Antenna Placement on 6U CubeSat Reviewed

Nakayama D., Sano K., Matsushima T., Fukumoto Y.

2024 International Conference on Electronics Packaging, ICEP 2024 193 - 194 2024.01

Matching Circuit to Improve Transmission Characteristic of Antenna for Undersea Communication Reviewed

Miki S., Kuwahara K., Eguchi K., Nakayama D., Matsushima T., Fukumoto Y.

2024 International Conference on Electronics Packaging, ICEP 2024 195 - 196 2024.01

Investigation of Calculation Accuracy for Line Constants of Transmission Line Constructed With Cable and Ground Plane Reviewed

Kuwabara N., Matsushima T., Enoki R., Fukumoto Y.

2024 IEEE Joint International Symposium on Electromagnetic Compatibility, Signal and Power Integrity: EMC Japan/Asia Pacific International Symposium on Electromagnetic Compatibility, EMC Japan/APEMC Okinawa 2024 - Proceedings 186 - 189 2024.01

Development of Emulator Simulating Transmission of Undersea Radio Communication Reviewed

Semba T., Kawamoto A., Matsushima T., Fukumoto Y., Eguchi K., Wakisaka T.

Comparison of the Dependence of Wiring Lengths of Radiated Immunity of Harnesses Connecting Automotive Communication Equipment Reviewed

Kagawa A., Inoue M., Matsushima T., Fukumoto Y.

Communication Speed Estimation of Undersea Wavelet-OFDM Communication under EM Noise Environment Reviewed

Motomura S., Semba T., Wakisaka T., Matsushima T., Fukumoto Y., Eguchi K.

Application of the Impedance Balance Method to Electric Compressor System with an Integrated Mechanical and Electrical Structure Reviewed

Fujimura M., Muto F., Matsushima T., Fukumoto Y., Takada K., Kobayashi K.

Analysis of mode conversion using modal equivalent circuits for immunity evaluation of high-speed communication equipment Reviewed

Kawashima T., Wakita K., Kaku Y., Matsushima T., Fukumoto Y.

Analysis of Degradation of Transmission Characteristics of Underwater Antenna due to Metal Enclosure of Autonomous Underwater Vehicle Reviewed

Matsumura S., Matsushima T., Fukumoto Y., Eguchi K.

Simple Comparison Method of Countermeasure Effect for Common Mode Filter on Radiated Emission Considering Conversion from Differential Mode to Common Mode Reviewed

KIKUCHI Koichi, MUNEMOTO Yu, MATSUSHIMA Tohlu, KUWABARA Nobuo, FUKUMOTO Yuki

J106-B ( 8 ) 519 - 526 2023.08

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

Each mixed-mode S-parameter of CMF has a phase characteristic, the phases are not the same, and the CMFs cannot be simply compared. In this study, as one way to confirm the usefulness of CMFs, we found a formula for equivalent common-mode voltage VEQ and calculated VEQ of each CMF for a square wave. Radiated emission levels were then evaluated by measuring CISPR 25. As a result, it was found that the magnitude relationship is the same as that of the equivalent common mode voltage VEQ.

DOI： 10.14923/transcomj.2022pep0009

CiNii Research

Transmission Characteristic Evaluation of Distribution Board in High-Speed Power Line Communication Reviewed

WAKISAKA Toshiyuki, MATSUSHIMA Tohlu, ENOKI Ryoya, KUWABARA Nobuo, FUKUMOTO Yuki

J106-B ( 8 ) 498 - 508 2023.08

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)

Today, with the increasing demand for IoT, there is a growing demand for high-speed power line communication (PLC) in large-scale facilities such as factories. So far, many studies have been conducted on the transmission characteristics of single-phase power lines in general households. and transmission characteristics including cross-phase communication have not been clarified. Therefore, in this paper, regarding transmission characteristics via distribution boards used in large-scale facilities such as factories, we first examine the signal propagation characteristics of a single breaker, showed that the mode S-parameter value increased. Then, we examined how the number of branches affects communication via distribution boards by measurement and analysis, and showed that in any case, it is close to 1/number of branches. By estimating the transmission characteristics via the distribution board according to the contents of this paper, it is possible to estimate the location where the PLC repeater should be installed.

DOI： 10.14923/transcomj.2022pep0001

CiNii Research

海中における伝送特性を用いた Wavelet-OFDM 通信の通信速度推定

元村史龍, 仙波拓人, 桑原堅誠, 脇坂俊幸, 松嶋徹, 福本幸弘

エレクトロニクス実装学術講演大会講演論文集 ( 一般社団法人エレクトロニクス実装学会 ) 37 ( 0 ) 14A5-4 2023.03

Underwater Live Video Streaming Experiment Using Radio Frequency Communication for AUVs Reviewed International journal

Alahmad Raji, Nishida Yuya, Ishii Kazuo, Fukumoto Yuki, Matsushima Tohlu

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 28 497 - 501 2023.02

Authorship：Last author Language：English Publishing type：Research paper (international conference proceedings)

Autonomous Underwater Vehicles (AUVs) require long-distance communication, especially in the deep sea. Radiofrequency (RF) communication provides a high data rate. However, electromagnetic wave is seriously limited by high attenuation in the water medium. In this study, we investigate Radiofrequency communication in seawater. The experiment results show the effects of the distance between the transmitter and receiver, and the stability of the antennas. We achieved HD video transmission with 25fps.

DOI： 10.5954/icarob.2023.os21-1

CiNii Research

Experimental Study of Underwater RF Communication for Live Video Transmission for AUVs Application Reviewed

Alahmad Raji, Ishii Kazuo, Nishida Yuya, Fukumoto Yuki, Matsushima Tohlu

Journal of Robotics, Networking and Artificial Life ( ALife Robotics Corporation Ltd. ) 10 ( 1 ) 84 - 90 2023.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

Autonomous Underwater Vehicles (AUVs) require long-distance communication, especially in the deep sea. Acoustics communication and wireless optical communication have limitations of low latency and water conditions effects respectively. Radiofrequency (RF) communication provides a high data rate with free orientation of the transmitter/receiver antennas. However, electromagnetic waves are highly restricted by high attenuation over short distances in the underwater medium. In this study, we investigated the RF communication in a tank full of seawater. A loop antenna and rectangular antenna were used for the base station and AUV respectively. The experiments were conducted to measure the transmission rate with different distances between the base station and the AUV using both User Datagram Protocol (UDP) and Transmission Control Protocol (TCP). Live video streaming with framerate analysis was considered. The results show the effect of the distance between the transmitter and receiver on the transmission rate, in addition, to the antenna's stability has huge effects on the connection stability. We successfully achieved a High-Definition (HD) video streaming with 25fps for over 1 meter.

DOI： 10.57417/jrnal.10.1_84

Scopus

CiNii Research

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Underwater Live Video Streaming Experiment Using Radio Frequency Communication for AUVs Reviewed

Alahmad R., Nishida Y., Ishii K., Fukumoto Y., Matsushima T.

Proceedings of International Conference on Artificial Life and Robotics 499 - 503 2023.01

Experimental Study of Wavelet-OFDM Radio Communication System for AUVs Under Seawater Reviewed

Hasaba R., Eguchi K., Wakisaka T., Satoh H., Hirokawa J., Hirose M., Matsushima T., Fukumoto Y., Nishida Y., Ishii K.

17th European Conference on Antennas and Propagation, EuCAP 2023 2023.01

Comparison of Suppression Effect by CMF for UTP and STP Lines Using Chain Parameter Matrix Reviewed International journal

Kuwabara N., Matsushima T., Fukumoto Y.

2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023 196 - 201 2023.01

Common-mode Current Converted from PLC Signal in Three-phase Distribution Network with Earth Leakage Circuit Breaker Reviewed International journal

Enoki R., Wakisaka T., Matsushima T., Fukumoto Y.

IEEE International Symposium on Electromagnetic Compatibility 2023-September 2023.01

Analysis of Common-mode Voltage during Switching of Individual IGBTs in Three-phase Inverter Reviewed International journal

Fujimura M., Matsushima T., Fukumoto Y., Takada K., Kobayashi K.

IEEE International Symposium on Electromagnetic Compatibility 2023-September 2023.01

Evaluation of Transmission Attenuation in Glass with Varying Angle of Incidence for 28 GHz Band Reviewed International journal

Tsunenari S., Matsushima T., Fukumoto Y.

Asia-Pacific Microwave Conference Proceedings, APMC 491 - 493 2023.01

Analysis Method of Transmission Characteristics between Coil Antennas for Short-Range Wireless Communication

Wakisaka Toshiyuki, Kuwahara Kensei, Semba Takuto, Matsushima Tohlu, Fukumoto Yuki

Journal of The Japan Institute of Electronics Packaging ( The Japan Institute of Electronics Packaging ) 25 ( 4 ) 309 - 313 2022.07

Communication Distance Estimation for Power Line Communication Using Various Differently Constituted Power Cables Reviewed

Fukumoto Y., Oshikawa K., Matsushima T., Kuwabara N., Wakisaka T.

IEEJ Transactions on Electrical and Electronic Engineering 17 ( 4 ) 498 - 505 2022.04

Rapid Calculation Method of Three-Dimensional Communication Range in HF Broadband Communication System Reviewed

Kuwahara K., Fukumoto Y., Matsushima T., Wakisaka T.

2022 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2022 106 - 111 2022.01

Electromagnetic Noise Evaluation of Transceiver IC and Communication Modules in CAN-FD Communication Reviewed

Nishida S., Matsushima T., Fukumoto Y.

2022 IEEE CPMT Symposium Japan, ICSJ 2022 76 - 79 2022.01

Detection of fault location in branching power distribution network using deep learning algorithm Reviewed

Nagata D., Fujioka S., Matshushima T., Kawano H., Fukumoto Y.

IEEE International Symposium on Electromagnetic Compatibility 2022-September 655 - 660 2022.01

Circuit analysis of common mode current in coupling coils for HF broadband communication system Reviewed

Matsushima T., Kuwahara K., Fukumoto Y.

2022 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2022 19 - 21 2022.01

Basic Study of Communication System in Seawater Using Magnetic Field Coupler and Wavelet OFDM Reviewed

Hasaba R., Eguchi K., Wakisaka T., Sato H., Hirokawa J., Hirose M., Matsushima T., Fukumoto Y.

Asia-Pacific Microwave Conference Proceedings, APMC 2022-November 488 - 489 2022.01

Analysis of CM-Signal Suppression Effect from DM Signal by Common-Mode Choke Coil Using Chain-Parameter Matrix Reviewed

Kuwabara N., Matsushima T., Fukumoto Y.

2022 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2022 181 - 186 2022.01

A Design Method for the Loop Antenna to Control a Range of HF-Broadband Wireless Communication

Proceedings of JIEP Annual Meeting ( The Japan Institute of Electronics Packaging ) 36 ( 0 ) 24B5-1 2022.01

Calculation of Radiated Emission from STP Cable by Chain-Parameter-Matrix Reviewed

Kuwabara N., Matsushima T., Fukumoto Y.

2021 Joint IEEE International Symposium on Electromagnetic Compatibility Signal and Power Integrity, and EMC Europe, EMC/SI/PI/EMC Europe 2021 1087 - 1092 2021.07

Simulation of mode division multiplex transmission method in shielded four-wire cable Reviewed

Matsushima T., Sato T., Fukumoto Y., Kuwabara N.

2021 Joint IEEE International Symposium on Electromagnetic Compatibility Signal and Power Integrity, and EMC Europe, EMC/SI/PI/EMC Europe 2021 570 - 574 2021.07

Evaluation of influence to electromagnetic environment on outside of building by PLC system using three-wire three-phase power line Reviewed

Wakisaka T., Matsushima T., Koga H., Okumura H., Kuwabara N., Fukumoto Y.

Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 214 ( 2 ) 2021.06

Transmission line pulse method with arbitrary characteristic impedance for immunity evaluation of ESD protection device Reviewed

Tanaka K., Matsushima T., Fukumoto Y.

2021 IEEE CPMT Symposium Japan, ICSJ 2021 21 - 24 2021.01

Equivalent Circuit of Common-Mode Choke Coil Considering with Conversion from Differential-Mode Signal to Common-Mode Disturbance Reviewed

Kuwabara N., Matsushima T., Fukumoto Y.

2021 13th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMC Compo 2021 59 - 64 2021.01

Imbalance difference model for prediction of unintentional radiated emission from 10-wire power cable using for power line communication Reviewed International journal

Tohlu Matsushima, Hiroyuki Okumura, Nobuo Kuwabara, Yuki Fukumoto

Wireless Networks 2020.10

Investigation of Multi-Cable Effect to Radiated Emission from Cable Used for Power Line Communication Reviewed International journal

Tohlu Matsushima, Hiroyuki Okumura, Nobuo Kuwabara, Miuto Iwasaki, Dai Ichiro Koike, Yuki Fukumoto

Proceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020 2020.09

Cancellation of common-mode excitation by SCD21and SCC21of CMF due to phase relationship between DM and CM voltages Reviewed International journal

Tohlu Matsushima, Koichi Kikuchi, Kenta Ishibashi, Yuki Fukumoto, Nobuo Kuwabara

Proceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020 2020.09

Analysis of Cable Length Dependency on Common Mode Current by Using Scale Model for Power Line Communication Reviewed International journal

Dai Ichiro Koike, Hiroyuki Okumura, Tohlu Matsushima, Yuki Fukumoto, Nobuo Kuwabara

Proceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020 2020.09

Influence of Scd21 Characteristics of Common-Mode Filter on Radiated Emission from UTP Cable Reviewed International journal

Koichi Kikuchi, Tohlu Matsushima, Kenta Ishibashi, Nobuo Kuwabara, Yuki Fukumoto

2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020 386 - 391 2020.09

Measurement of Differential Mode Impedance and Longitudinal Conversion Loss for In-Factory High-Speed PLC System using Three-Phase Power Distribution System Reviewed International journal

Wakisaka T., Matsushima T., Okumura H., Koga H., Kuwabara N., Fukumoto Y.

2020 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2020 2020.04

Evaluation of Influence to Electromagnetic Environment on Outside of Building by PLC System using Three-wire Three-phase Power Line Reviewed

Wakisaka Toshiyuki, Matsushima Tohlu, Koga Hisao, Okumura Hiroyuki, Kuwabara Nobuo, Fukumoto Yukihiro

IEEJ Transactions on Fundamentals and Materials ( The Institute of Electrical Engineers of Japan ) 140 ( 12 ) 557 - 564 2020.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

In this paper, the influence to electromagnetic environment was evaluated on the outside of buildings where power line communication (PLC) systems were installed to a three-wire three-phase power distribution line. The electric field strength was measured at 140 points in five factories, in two office buildings, and in one stadium. Since many radio waves existed in the environment, the electric field strength when PLC system was operated and was not operated was measured. The influence was evaluated by the cumulated occurrence probability because the frequency characteristics of the electric filed strength changed by the measurement points. The results showed that the occurrence probability was not changed when the PLC system was operated and was not operated. The electric field strength was calculated by the common mode current obtained from the test result, and this indicated that the occurrence probability was lower than the measured occurrence probability of electric field strength.

DOI： 10.1541/ieejfms.140.557

Scopus

CiNii Article

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Other Link： https://ci.nii.ac.jp/naid/130007948596

Method of implementing radiation resistance to analysis model for radiated emission using chain parameter matrix Reviewed

Kuwabara Nobuo, Matsushima Tohlu, Fukumoto Yuki

IEICE Communications Express ( The Institute of Electronics, Information and Communication Engineers ) 9 ( 9 ) 446 - 450 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

The analysis method using the chain parameter matrix (F-matrix) has been proposed for calculating radiated emission from the cable used by power line communication (PLC). In this paper, the radiation resistance was implemented to the F-matrix as the load of the common mode current which was converted from the differential mode PLC signal by the unbalance of the transmission system and was considered as the emission source. The calculated result for the simple cable model was compared to the measurement value and to the calculation value of which the radiation resistance was not considered. The investigation result indicated that the influence of radiation resistance appeared at the frequency where the high radiated emission was observed.

DOI： 10.1587/comex.2020XBL0070

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Fukumoto/Matsushima Laboratory, Department of Electrical and Electronic Engineering, School of Engineering, Kyushu Institute of Technology

Fukumoto Yukihiro, Matsushima Tohlu

Journal of The Japan Institute of Electronics Packaging ( The Japan Institute of Electronics Packaging ) 22 ( 7 ) 622 - 622 2019.11

Characteristics of Radiated Emission by PLC Signal from Three-wire Power Cable Reviewed International journal

Nobuo Kuwabara, Yuki Fukumoto, Tohlu Matsushima, Hiroyuki Okumura

EMC Europe 2019 267 - 272 2019.09

Characteristics of Radiated Emission by PLC Signal from Three-wire Power Cable Reviewed

Kuwabara N., Matsushima T., Fukumoto Y., Okumura H.

EMC Europe 2019 - 2019 International Symposium on Electromagnetic Compatibility 267 - 272 2019.09

Evaluation of EM emission from a wire with common mode filter considering mode-conversion Reviewed International journal

Koichi Kikuchi, Masaharu Kondo, Tohlu Matsushima, Yuki Fukumoto, Nobuo Kuwbara

2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) 2019.07

Statisitical Investigation of Radiated Emissions from PLC System Connected to 3-Phase Power Lines in Factories Reviewed International journal

Toshiyuki Wakisaka, Tohlu Matsushima, Hisao KOGA, Naohiro Kawabata, Nobuo kuwabara, Yuki Fukumoto

APEMC 2019 & EMC Sapporo 2019.06

Calculation of Electromagnetic Field Radiated from Power Line Communication of Three Wires System Reviewed International journal

Takeshi Yamamoto, Tohlu Matsushima, Nobuo kuwabara, Yuki Fukumoto, Hiroyuki Okumura, Toshiyuki Wakisaka

APEMC 2019 & EMC Sapporo 2019.06

Calculation of Electromagnetic Field Radiated from Power Line Communication of Three Wires System Reviewed

Yamamoto T., Okumura H., Wakisaka T., Matsushima T., Kuwabara N., Fukumoto Y.

2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019 704 - 707 2019.06

Experimental study of the relationship between maximum common mode current and maximum magnetic field strength using a simple power distribution line model Reviewed

Okumura Hiroyuki, Matsushima Tohlu, Kuwabara Nobuo, Yamamoto Takeshi, Wakisaka Toshiyuki, Fukumoto Yuki

IEICE Communications Express ( The Institute of Electronics, Information and Communication Engineers ) 8 ( 5 ) 178 - 183 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

The relation between maximum common mode current and maximum radiated magnetic field strength was experimentally studied using a simple power distribution line model. The common mode current was measured along the cable and the radiated magnetic field strength was measured around the model. They were evaluated using the S21 parameter. The frequency characteristic of both the maximum current and the maximum strength showed a closely similar pattern. Our evaluation of their correlation indicated that the relation between the maximum common mode current and the maximum radiated magnetic field strength could be represented by a straight line, and that 80% of the measured data was contained within 2 dB of the regression line.

DOI： 10.1587/comex.2019XBL0004

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Measurement of Transmission Characteristics for Long-distance Power Line Communication

Ohara Soichiro, Kobayashi Fumikazu, Oshikawa Kazumasa, Wakisaka Toshiyuki, Matsushima Tohlu, Fukumoto Yuki

Proceedings of IIAE Annual Conference ( The Institute of Industrial Applications Engineers ) 2019 ( 0 ) 41 - 41 2019.01

妨害波パラメータに対するEthernet通信のパケットエラーレートの変化

石橋健太, 松嶋徹, 福本幸弘

エレクトロニクス実装学術講演大会講演論文集 ( 一般社団法人エレクトロニクス実装学会 ) 33 ( 0 ) 12C2-04 2019.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)

近年,自動運転技術などの発達により,車載通信の大容量化が求められている.この要求に対して,通信容量が比較的大きいEthernetを車載用途に転用する動きがある. Ethernetはオフィスや家庭で使用されてきたため,車載用途と比較して信頼性要求は高くない.そこで本研究では,信頼性の評価方法を定めるため,Ethernetが弱点とする妨害波のパラメータを探ることを目的とした.そのために,妨害波として差動のパルス電圧を通信中のEthernetケーブルに対して印加し,その妨害波のパラメータとパケットエラーレートの相関を調査した.この論文ではその結果を報告する.

DOI： 10.11486/ejisso.33.0_12c2-04

CiNii Article

CiNii Research

モーメント法を用いた高周波電流測定用ロゴスキーコイルの設計

押川和正, 桑原伸夫, 福本幸弘, 松嶋徹, 脇坂俊幸

エレクトロニクス実装学術講演大会講演論文集 ( 一般社団法人エレクトロニクス実装学会 ) 33 ( 0 ) 11D3-02 2019.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)

PLCなど電力線上の高周波電流を測定する際、低周波電流による磁気飽和をしないロゴスキーコイルを用いる必要がある。本論文では、モーメント法を用いた電磁界解析プログラムであるNEC2によるシミュレーションにより伝達インピーダンスを求め、所望の高周波電流を測定できるロゴスキーコイルを設計した。設計したロゴスキーコイルを作製・評価し、電力線上のPLC信号の電流測定を行った。

DOI： 10.11486/ejisso.33.0_11d3-02

CiNii Article

CiNii Research

Key Challenges for Internet of Things in Consumer Electronics Industry Reviewed

Yukihiro Fukumoto, Kazuo Kajimoto

Studies in Computational Intelligence, Artificial Intelligence and Robotics 752 229 - 237 2018.01

Key Challenges for Internet of Things in Consumer Electronics Industry Invited Reviewed

Yukihiro Fukumoto, Kazuo Kajimoto

The 2nd International Symposium on Artificial Intelligence and Robotics (ISAIR 2017) 2017.11

High-Speed Simulation of PCB Emission and Immunity with Frequency-Domain IC/LSI Source Mode Reviewed

Osami Wada, Zhi Liang Wang, Tetsuya Watanabe, Yukihiro Fukumoto, Osamu Shibata, Eiji Takahashi, Hideki Osaka, S. Matsunaga, Ryuji Koga

2003 IEEE Int. Symp. on EMC TU-AM-SS1-2 4 - 9 2003.08

LSIの電源端子電流モデルのEMIシミュレーションへの適用 Reviewed

高山惠介, 木下智博, 松石拓也, 松永茂樹, 王志良, 豊田啓孝, 和田修己, 古賀隆治, 福本幸弘

電子情報通信学会論文誌Ｂ J86-B ( 2 ) 226 - 235 2003.02

EMC基礎講座第11回：プリント配線板のEMC設計CAD Invited Reviewed

福本幸弘, 中山武司

エレクトロニクス実装学会誌 5 ( 6 ) 613 - 618 2002.09

Evaluation of LSI immunity to noise using an equivalent internal impedance model Reviewed

Eiji Takahashi, Osamu Shibata, Yukihiro Fukumoto, Takashi Yoneda, Hiroshi Benno, Osami Wada

EMC EUROPE 2002 Int. Symp. on EMC 487 - 492 2002.09

Analytical simulation of radiated emission from power bus noise on PCB with linear macro-model of IC/LSI Reviewed

Osami Wada, Zhi Liang Wang, Yukihiro Fukumoto, Yoshitaka Toyota, Ryuji Koga

XXVIth General Assembly of the International Union of Radio Science(URSI) 1691.1 - 1691.4 2002.08

Radiated Emission Analysis of Power Bus Noise by Using a Power Current Model of an LSI Reviewed

Yukihiro Fukumoto, Osamu Shibata, Keisuke Takayama, Tomohiro Kinoshita, Zhi Liang Wang, Yoshitaka Toyota, Osami Wada, Ryuji Koga

2002 IEEE Int. Sympo. on EMC 1037 - 1042 2002.08

A Simple Method for Measuring the Relative Permittivity of Printed Circuit Board Materials Reviewed

Akihiro Namba, Osami Wada, Yoshitaka Toyota, Yukihiro Fukumoto, Zhi Liang Wang, Ryuji Koga, Takuya Miyashita, Tetsushi Watanabe

IEEE Trans. on EMC 43 ( 4 ) 515 - 519 2001.11

Power current model of LSI/IC containing equivalent internal impedance for EMI analysis of digital circuits Reviewed

Yukihiro Fukumoto, Yasuo Takahata, Osami Wada, Yoshitaka Toyota, Takuya Miyashita, Ryuji Koga

E84-B ( 11 ) 3041 - 3049 2001.10

Modeling of Printed Circuit Boards for Fast EMC Simulation Reviewed

Osami Wada, Zhi Liang Wang, Yukihiro Fukumoto, Yoshitaka Toyota, Ryuji Koga

2001 Asia-Pacific Radio Science Conference AP-RASC-’01 2001.08

Power current model of LSI and a parameter identification for EMI simulation of digital PCB Reviewed

Yukihiro Fukumoto, Takuya Matsuishi, Tomohiro Kinoshita, Osami Wada, Yoshitaka Toyota, Ryuji Koga

2001 IEEE Int. Symp. on EMC 1185 - 1190 2001.08

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