EMC design of analog and digital circuits, evaluation, modeling and simulation of EMC characteristics of semiconductor devices, evaluation, modeling and simulation of high-frequency characteristics of passive interconnections.
Overview of the research
The current research activities cover the circuit theory together with the electromagnetic field theory and their applications. The research fields include electromagnetic compatibility (EMC) of electronic devices, circuits, and systems.
Research Areas
Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electronic devices and equipment
Papers
Differential-/Common-Mode Conversion Loss and LCL/TCL Measurement Methods
Tohlu Matsushima; Akira Sugiura; Osami Wada
IEEE Transactions on Electromagnetic Compatibility, Oct. 2020
Experimental investigation of communication quality degradation of 1000BASE-T1 by pulse disturbance
Yusuke Yano; Tohlu Matsushima; Osami Wada
IEICE COMMUNICATIONS EXPRESS, 2020
Single-Conductor Transmission Line Model Incorporating Radiation Reaction
2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019, Jun. 2019
Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres
2018 JOINT IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 2018 IEEE ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC/APEMC), 2018, Peer-reviewed
A Study on Characteristics of 10 MHz to 30 MHz in CISPR 25 ALSF Method CISPR 25 Annex J Reference Data Verification of Long-wire Method
Takanori Uno; Koji Maeda; Toshiyasu Tanaka; Yoshitsugu Okuda; Osami Wada
2018 JOINT IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 2018 IEEE ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC/APEMC), 2018, Peer-reviewed
Formulation of Single-conductor Transmission Line Model with Feedback Electric Fields by Terminal Discontinuity
2018 JOINT IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 2018 IEEE ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC/APEMC), 2018, Peer-reviewed
Modal Analysis of Reflection of TDR in Overhead Distribution Lines
2018 JOINT IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 2018 IEEE ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC/APEMC), 2018, Peer-reviewed
Topological Estimation of Resonant Frequencies by Equivalent Circuit for Star Meta-Atoms
Validation of prediction method of common-mode current reduction based on imbalance difference model for differential transmission line placed near edge of adjacent ground plane
Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMCCompo 2017, 31 Jul. 2017, Peer-reviewed
妨害パルスとパケットの衝突確率を考慮したパケット誤り率解析
高谷 和宏; 富田 大將; 梅田 康希; 小川 将克; 松嶋 徹; 久門 尚史; 和田 修己
電子情報通信学会論文誌. B, 通信, Mar. 2017, Peer-reviewed
Equivalent-Circuit Model for Meta-Atoms Consisting of Wired Metallic Spheres
Quick scanning TDL spectrometry for atmospheric trace gas monitoring with anti-scintillation performance
R Koga; O Wada; M Wang; N Kagawa
APPLICATION OF TUNABLE DIODE AND OTHER INFRARED SOURCES FOR ATMOSPHERIC STUDIES AND INDUSTRIAL PROCESS MONITORING, 1996, Peer-reviewed
Fluctuation spectra for an infrared laser beam propagating horizontally in the open atmosphere
N Kagawa; O Wada; R Koga
OPTICAL RADIATION MEASUREMENTS III, 1996, Peer-reviewed
EIGENMODE ANALYSIS OF WHISPERING-GALLERY MODES OF PILLBOX-TYPE OPTICAL RESONATORS UTILIZING THE FE-BPM FORMULATION
A AHMED; R KOYA; O WADA; M WANG; R KOGA
IEICE TRANSACTIONS ON ELECTRONICS, Nov. 1995, Peer-reviewed
PREDICTION OF PEAK FREQUENCIES ON ELECTROMAGNETIC EMISSION FROM A SIGNAL LINE ON A PRINTED-CIRCUIT BOARD
T MIYASHITA; O WADA; R KOGA; H SANO
IEICE TRANSACTIONS ON COMMUNICATIONS, Feb. 1995, Peer-reviewed
Advances in Research for Electromagnetic Characteristics of Printed Circuits. Recent Activity of Research Group for Electromagnetic Behavior.:-Recent Activity of Research Group for Electromagnetic Behavior-
2008 ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 19TH INTERNATIONAL ZURICH SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, VOLS 1 AND 2, 2008, Peer-reviewed
Effect of package parasitics on conducted and radiated emission with mixed-mode analysis
Umberto Paoletti; Takashi Hisakado; Osami Wada
2008 ASIA-PACIFIC SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY AND 19TH INTERNATIONAL ZURICH SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, VOLS 1 AND 2, 2008, Peer-reviewed
Determination of Effective Parasitic Capacitance around IC Package for EMC modeling
2007 4TH INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY PROCEEDING: EMC 2007, 2007, Peer-reviewed
Fast and accurate estimation of radiated emission from printed circuit board using common-mode antenna model based on common-mode potential distribution
EMC-Conscious Designing Procedure of Digital Electronic Devices and the Development of EMI Simulators
Grant-in-Aid for Scientific Research (A)
Okayama University
Ryuji KOGA
Project Closed
ディジタル電子装置;EMC;近傍電磁界;放射電磁界;回路電流;放射電磁雑音;データベース;近傍界;シミュレータ, digital electronic device;EMC;near-field electromagnetic field;radiated electromagnetic field;circuit current