Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EMCJ |
2018-01-19 10:20 |
Okayama |
|
PWM signal generation method to reduce impulse noise Takeharu Kohri, Masakatsu Ogawa (Sophia), Yuichiro Okugawa, Yoshiharu Akiyama (NTT) EMCJ2017-97 |
Pulse Width Modulation (PWM) control used in an inverter to drive a motor consists of switching devices such as Insulate... [more] |
EMCJ2017-97 pp.55-59 |
EMCJ, IEE-SPC (Joint) |
2017-06-05 13:55 |
Hokkaido |
Sapporo Convention Center |
Improved shunt-type AAN and its characteristics Takashi Shinozuka, Katsumi Fujii (NICT), Kazuhiro Takaya, Yoshiharu Akiyama (NTT), Akira Sugiura, Osami Wada (Kyoto Univ.) EMCJ2017-23 |
(To be available after the conference date) [more] |
EMCJ2017-23 pp.13-18 |
PRMU, IE, MI, SIP |
2017-05-25 14:40 |
Aichi |
|
Local linear predictive coding for characterizing electro-magnetic noise Fumihiko Ishiyama, Yuichiro Okugawa, Yoshiharu Akiyama (NTT) SIP2017-9 IE2017-9 PRMU2017-9 MI2017-9 |
We are investigating methods of characterizing electric noise to identify the source of the electric noise. For the purp... [more] |
SIP2017-9 IE2017-9 PRMU2017-9 MI2017-9 pp.49-54 |
EMCJ |
2017-04-14 14:05 |
Tokyo |
NTT Musashino R&D Center |
Feature extraction of conducted disturbance below 150 kHz from power conversion equipment Farhan Mahmood, Ken Okamoto, Fumihiko Ishiyama, Yuichiro Okugawa, Yoshiharu Akiyama (NTT) EMCJ2017-1 |
[more] |
EMCJ2017-1 pp.1-6 |
EMCJ |
2017-04-14 14:30 |
Tokyo |
NTT Musashino R&D Center |
Method of transient signal analysis and its application to switching noise Fumihiko Ishiyama, Farhan Mahmood, Yuichiro Okugawa, Yoshiharu Akiyama (NTT) EMCJ2017-2 |
We are investigating methods of characterizing electric noise to identify the source of the electric noise. For the purp... [more] |
EMCJ2017-2 pp.7-12 |
EMCJ |
2017-04-14 14:55 |
Tokyo |
NTT Musashino R&D Center |
An analytical study on the novel design method of small size frequency selective EM shield for mobile devices to prevent EM information leakage Go Itami, Yohei Toriumi, Yoshiharu Akiyama (NTT) EMCJ2017-3 |
Recently, a risk of information leakage, such as eavesdropping on display screens and typing characters of mobile device... [more] |
EMCJ2017-3 pp.13-18 |
EMCJ, WPT (Joint) |
2016-01-28 13:10 |
Kumamoto |
Kumamoto National Colle. Technology |
Relationship between Leakage and Induction Magnetic Fields Characteristics of the Simplified Power Line Model
-- Comparison between No Branch and Outlet Branch -- Masamitsu Tokuda (Univ. of Tokyo), Yohei Toriumi, Kazuhiro Takaya, Yoshiharu Akiyama (NTT), Hiroyuki Ohsaki (Univ. of Tokyo) EMCJ2015-107 |
A high speed power line communication system using high frequency band may decrease its transmission speed due to distur... [more] |
EMCJ2015-107 pp.23-28 |
EMCJ, WPT (Joint) |
2014-01-31 16:10 |
Saga |
Saga Univ. |
Investigation of CDN with Transformer Used below 150 kHz Nobuo Kuwabara, Hiromu Okumura (Kyushu Inst. of Tech.), Yuichiro Okugawa, Kazuhiro Takaya, Yoshiharu Akiyama (NTT) EMCJ2013-130 |
Progress of energy saving mind makes a force employing electrical equipment with inverter and converter circuits. The pr... [more] |
EMCJ2013-130 pp.111-116 |
ASN, MoNA (Joint) |
2014-01-24 09:25 |
Ehime |
Hotel Okudogo (Matsuyama) |
Experimental Evaluation of Interference Avoidance between Wireless LAN and ZigBee Ryosuke Murata, Yosuke Takaki, Masakatsu Ogawa (Sophia Univ.), Yuichiro Okugawa, Kazuhiro Takaya, Yoshiharu Akiyama (NTT) MoNA2013-57 |
[more] |
MoNA2013-57 pp.49-53 |
ASN, MoNA (Joint) |
2014-01-24 12:05 |
Ehime |
Hotel Okudogo (Matsuyama) |
[Technology Exhibit]
Experiments on Interference Avoidance method between Wireless LAN and ZigBee Yosuke Takaki, Ryosuke Murata, Masakatsu Ogawa (Sophia Univ), Yuichiro Okugawa, Kazuhiro Takaya, Yoshiharu Akiyama (NTT) MoNA2013-65 |
[more] |
MoNA2013-65 pp.93-94 |
EMCJ |
2013-11-22 15:50 |
Tokyo |
Tokyo Denki Univ. |
Influence on Telecommunication and Mains ports of VDSL Telecommunication Equipment from Injected Disturbances Hiromu Okumura, Nobuo Kuwabara (KIT), Yoshiharu Akiyama, Yuichiro Okugawa (NTT) EMCJ2013-97 |
[more] |
EMCJ2013-97 pp.35-40 |
EMCJ |
2013-09-13 10:35 |
Hokkaido |
Hokkaido Univ. |
A study on electromagnetic interference to telecommunication equipment due to WiFi radio waves Norihito Hirasawa, Ken Okamoto, Hidenori Itou, Masashi Takahashi (NTT East), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) EMCJ2013-49 |
Wireless communication services can be used at various places by development of wireless communication technologies. To ... [more] |
EMCJ2013-49 pp.1-5 |
EMCJ, EMD |
2013-07-12 15:25 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Analysis of high-frequency components in electrostatic discharge events
-- Assessing the effect of discharge electrode material and relative humidity -- Masao Masugi (Ritsumeikan Univ.), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) EMCJ2013-47 EMD2013-32 |
This report describes evaluations of electrostatic discharge (ESD) events from electromagnetic interference (EMI) aspect... [more] |
EMCJ2013-47 EMD2013-32 pp.43-46 |
EMCJ (2nd) |
2012-11-29 13:30 |
Tokyo |
NICT |
A study on the interference characteristics of ZigBee systems on IEEE 802.11g Yuichiro Okugawa, Atsushi Nagao, Shin Kanno, Yoshiharu Akiyama (NTT E&E Labs.) |
In this paper, experimental results on the
frame error rate (FER) of an IEEE 802.11g based
wireless LAN (WLAN) system ... [more] |
|
EMCJ (2nd) |
2012-11-30 16:25 |
Tokyo |
NICT |
Study for the operational guideline of wireless applications' use in telecommunication equipment rooms Kimihiro Tajima (NTT), Hidenori Itou, Norihito Hirasawa (NTT East), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) |
[more] |
|
EST, EMCJ, IEE-EMC [detail] |
2012-10-26 09:25 |
Miyagi |
Tohoku Gakuin University(Tagajo Campus) |
Investigation of relation between disturbance level and degradation of semiconductor devices by using TTL Tsubasa Ueda, Hiromu Okumura, Nobuo Kuwabara (KIT), Yoshiharu Akiyama (NTT) EMCJ2012-76 EST2012-60 |
Various information is included in the electromagnetic waves leaked from an electronic device. If information required f... [more] |
EMCJ2012-76 EST2012-60 pp.71-76 |
EMCJ, EMD |
2012-07-20 15:55 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Energy-based analysis of electrostatic discharge current
-- Assessment of high oscillations in ESD waveform -- Masao Masugi (Ritsumeikan Univ.), Norihito Hirasawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT east) EMCJ2012-48 EMD2012-23 |
This report describes evaluations of electrostatic discharge (ESD) events from electromagnetic interference (EMI) aspect... [more] |
EMCJ2012-48 EMD2012-23 pp.43-46 |
EMCJ |
2012-05-31 15:45 |
Tokyo |
TMU Akihabara Satellite Campus |
Investigation of the input impedance measurement technique of the telecommunication equipments in an operating state Naomichi Nakamura, Norihito Hirasawa, Yoshiharu Akiyama (NTT), Nobuo Kuwabara (Kyushu Institute of Technology Univ.) EMCJ2012-15 |
As the equipment using inverter technology is increasing for power savings, it has been reported that the disturbance fr... [more] |
EMCJ2012-15 pp.35-39 |
EMCJ |
2012-01-27 11:10 |
Fukuoka |
Kyushu Univ. |
A Study on Conducted Disturbances Measurement by using CDNE
-- Necessity of LCL Requirements -- Norihito Hirasawa, Shin Kanno, Yoshiharu Akiyama (NTT) EMCJ2011-117 |
An alternative test method for radiated emission measurement emitted from the lighting equipment in frequency range 30 t... [more] |
EMCJ2011-117 pp.37-40 |
EMCJ, IEE-EMC |
2011-12-09 09:45 |
Aichi |
Nagoya Inst. of Tech. |
A study on the correlation between common mode voltage measured by using CDNE and radiated electromagnetic field strength emitted from LED bulbs. Shin Kanno, Norihito Hirasawa, Yoshiharu Akiyama (NTT) EMCJ2011-98 |
[more] |
EMCJ2011-98 pp.13-17 |