COMMISSION E:
Electromagnetic Environment and Interference(November 2013 – October 2016)
Edited by Yasuhide Hobara
Osami Wada

Natural EM Noise

Electromagnetic Phenomena Associated with Earthquakes

Before the major earthquakes (EQs) (1 month ~ few days), unusual electromagnetic effects have been observed despite thatthe complete physical mechanism have not understood well. One of these effects is anomaly occurred in the different regionsof the ionosphere. In Japan, the densest VLF/LF transmitter signal receiving network have been deployed by UEC (University
of Electro-Communications) and it continuously monitors the lower ionospheric conditions. Distinctive ionosphericperturbations in the nighttime D region (~80 km) were observed prior to major seismic activities such as Tohoku-Oki
Earthquake in 2011.
Hobara et al. [2013] study the ionospheric perturbations by the Japanese VLF/LF transmitter amplitude data together withfrequency dependent filtered surface displacement data from high density GPS network for inland earthquakes in Japan during
several consecutive years to study the LAI (Lithosphere-Atmosphere-Ionosphere) coupling mechanism. They found that both
ionospheric perturbations and surface displacements occurred almost simultaneously about one week before for some of theshallow earthquakes indicative of coupling between the precursory ground movement and relevant ionospheric perturbations.
Either ionospheric or GPS anomalies were also found for other earthquakes. Chen et al. [2014] analyzed surface displacement
data and for Tohoku-Oki earthquake. They found that the horizontal displacements integrated with the vertical movementsfrom the residual GPS data are very useful to construct comprehensive images in diagnosing the surface deformation fromdestructive earthquakes along the subduction zone.
Kawano et al., 2015 carried out the statistical study of ionospheric perturbations associated with 243 major earthquakes
around Japan both for inland and sea earthquakes. These earthquakes were characterized into three different groups based on
the Centroid-Moment-Tensor (CMT) solution. As a result, the reverse fault type earthquakes have the highest occurrence rateof ionospheric perturbation, which indicates the coupling efficiency of seismic activity into the overlaying ionosphereprobably controlled by preparation process of earthquakes.
Estimating the location and spatial extent of the lower ionospheric perturbations by using VLF/LF transmitter signal
observations is a challenging task due to the large spatial separation between transmitters and receivers in general. This
problem is very important to obtain the quantitative information of possible ionospheric perturbations in D region before
earthquakes. Inui and Hobara [2014] characterize the spatial-temporal dependence of ionospheric perturbations from known
perturbation sources i.e. solar eclipse passing through the VLF/LF transmitter receiving network in Japan by comparing theresults from observation with the numerical model by FDTD method.
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Another important problem is to quantitatively estimate the external forcing effects from various physical parameters to
the VLF/LF transmitter signal amplitude to improve the detection efficiency of unknown ionospheric anomalies such as preseismic ionospheric perturbations. Tatsuta et al. [2015] investigate the effect of geomagnetic storms to the VLF/LF transmitter
signal amplitude for different transmitter-receiver paths (high latitude, mid latitude, and trans equatorial paths) and found that
detection rate of anomalies varies with latitudes of propagation paths.
Statistical properties of pre-seismic anomalies in ULF geomagnetic fields have been reported by Han et al. [2014] They
performed the superposed epoch analysis and found that ULF anomalies appear 6~15 days before sizable earthquakes.
Moreover, Molchan’s error diagrams is derived containing precursory information of earthquakes and discuss how they canbe used in short-term earthquake forecasting.
As were mentioned above currently research on statistical properties of electromagnetic anomalies based on long-term data
set are conducted for understanding physical mechanisms of these phenomena and LAI coupling, whilst multi-parametricapproach to identify these anomalies is important for future earthquake prediction in high accuracy.
Rozhnoi et al. [2014] report on fluctuations VLF transmitter signals that correlate both spatially and temporally with thepassage of the tsunamis recorded by the Deep-ocean Assessments and Reporting of Tsunamis bottom pressure stations.
Measured signals were consistent with the hypothesis that the ocean tsunami following the Chile earthquake on 27 February2010 radiated internal gravity waves which propagated through the lower ionosphere.

Lightning and related phenomena

From 2013 to 2016, so much progress in lightning research related to EMC issues is seen in the literatures. In this section,some of such progress are reviewed mainly on lightning location system research particularly in Asian region.
An international collaborative research between Osaka University and New Mexico Institute of Mining and Technology
improved greatly the VHF DITF developed by the research group of Osaka University and observed lightning discharges withan “upgraded VHF digital interferometer” system [Akita et al., 2014]. Stock et al. [2014] also reported an algorithm
implemented on the same hardware described in Akita et al. [2014]. The algorithm employed by Stock et al. [2014] was moreclose to that reported by Sun et al. [2012] than that reported by Akita et al. [2014]. They also succeeded in locating in 2D
lightning discharges in details. The detailed procedures to locate VHF sources, including noise reduction, are available in
Stock et al. [2014] and Akita et al. [2014].
In 2012, Phased Array Weather Radar [Yoshikawa et al. 2013] was developed by Toshiba, NICT and Osaka University.
The observation results are impressive and succeed in capturing the descending process of precipitation core of thunderstorms.
The project with RIKEN started in 2013 [Miyoshi et al. 2016] and use the data from the Phased Array Weather Radar for data
assimilation with K-Computer system. The LF based lightning location system called BOLT locates in 3D pulse peak signals
on electric field change waveforms of each sensor by the TOA. Initial observation results of BOLT were compared with the
PAR observation results [Yoshida et al., 2014].
Winter thunderstorm activities—relatively rare in the world—occur around the coast line in the north-west part of Japan.
The winter lightning is characterized by e.g. its large electrical energy and predominance of positive lightning polarity, which
is very different from conventional lightning in summertime. Thus many field campaigns have been conducted by Japanesegroup to elaborate on lightning physical properties by using modern technological systems such as digital interferometer, VLF
interferometer, ELF observation network etc. The damages to the power grid and wind turbine system are also significant andspatial distributions of the energetic lightning deduced by ELF remote sensing technique is useful to mitigate future lightning
damages [Hobara et al., 2013, 2015].
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Recent findings of TLEs (Sprite and Jets) and high energy phenomena have also been observed in Japan and many research
activities are going on in relation with associated electromagnetic emissions including JAXA’s Global Lightning and Sprite
Measurements (GLIMS) mission onboard ISS (International Space Station) [Sato et al., 2014].
Lightning application to the severe meteorological phenomena such as tornadoes and heavy precipitations have received a
lot of attention in recent years for short-term forecasting of severe weather and for mitigating damages from natural disasters.
Japanese total lightning network recently deployed by UEC group in collaboration with Earth Network started operation andsuccessfully observed the sharp increase in lightning flash rate (lightning jump) immediately before the severe weather onset
such as tornadoes and gust wind [Hobara et al., 2015].

References
Akita, M., M. Stock, Z. Kawasaki, P.R. Krehbiel, W. Rison, M. Stanley [2014], “Data Processing Procedure using Distributionof Slopes of Phase Differences for Broadband VHF Interferometer,” J. Geophys. Res., 119, 6085–6104,
doi:10.1002/2013JD020378.
Han, P., K. Hattori, M. Hirokawa, J. Zhuang, C. Chen, F. Febriani, H. Yamaguchi, C. Yoshino, J. Liu, and S. Yoshida [2014],“Statistical analysis of ULF seismomagnetic phenomena at Kakioka, Japan, during 2001-2010,” J. Geophys. Res. Space
Physics,119(6), 4998–5011, doi:10.1002/2014JA019789.
Hobara, Y., R. Miyake, C. H. Chen [2013], “Simultaneous observations of ionospheric disturbances from VLF transmitter signals andsurface displacements from GPS related to inland earthquakes over Japan,” American Geophysical Union Fall Meeting, NH33B-1642,
Dec.
Hobara, Y., T. Inoue, M. Hayakawa, and K. Shiokawa [2013], “Deducing Locations and Charge Moment Changes of Lightning
Discharges by ELF Network Observations in Japan,” IEEJ Trans Power Energy, Vol.133, No.12, 994-1000, doi:
/10.1541/ieejpes.133.994.
Hobara, Y., J. Yamashita and T. Narita [2015], “Spatial Distributions of Lightning with Charge Moment Change over northern Part ofJapan by ELF and LLP Observations,” Asia-Pacific International Conference 2015, TC2.2, June.
Hobara, Y., H. Ishii, Y. Kumagai, C. Liu, S. Heckman, C. Price and E. R. Williams [2015], “Preliminary Results from the Japanese
Total Lightning Network,” American Geophysical Union Fall Meeting, AE31B-0433, Dec.
Inui, D., and Y. Hobara [2014], “Spatio-Temporal characteristics of subionospheric perturbations associated with annular solar eclipse
over Japan: Network observations and modeling,” URSI GASS, Aug.
Kawano, T., K. Tatsuta and Y. Hobara [2015], “A Statistical study on VLF subionospheric perturbations associated with major
earthquakes: A View from Focal Mechanism,” American Geophysical Union Fall Meeting, NH21C-1836, Dec. 2015.
Rozhnoi, A., S. Shalimov, M. Solovieva, B. Levin, G. Shevchenko, M. Hayakawa, Y. Hobara, S. N. Walker, and V. Fedun[2014], “Detection of tsunami-driven phase and amplitude perturbations of subionospheric VLF signals following the 2010
Chile earthquake,” J. Geophys. Res., 5012–5019, 119-6.
Sato, M., T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, T. Adachi, M. Suzuki, A. Yamazaki, Y. Takahashi, U. Inan, I.
Linscott, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara, T. Sano, T. Abe, M. Nakamura, H. Oda, and Z-I, Kawasaki [2014],“Overview and early results of the Global Lightning and Sprite Measurements mission,” J. Geophys. Res.– Atmosphere, 120.
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Tatsuta, K., Y. Hobara, S. Pal, and M. Balikhin [2015], “Sub-ionospheric VLF signal anomaly due to geomagnetic storms: astatistical study,” Ann. Geophys., pp.1457-1467, 33.
Stock, M.G., M. Akita, P.R. Krehbiel, W. Rison, H.E. Edens, Z. Kawasaki, M.A. Stanley [2014], “Continuous broadband
digital interferometry of lightning using a generalized cross-correlation algorithm,” J. Geophys. Res. Atmos., 119, 3134–3165,
doi:10.1002/2013JD020217.
Yoshida, S., T. Wu, T. Ushio, Y. Takayanagi [2014], “Lightning observation in 3D using a multi LF sensor network andcomparison with radar reflectivity,” IEEJ, 134, 4, 188-196. (in Japanese)
Yoshikawa, E., T. Ushio, Z. Kawasaki, S. Yoshida, T. Morimoto, F. Mizutani, and W. Wada [2013], “MMSE beam forming
onfast-scanningphasedarrayweatherradar,”IEEE

Trans.

Geosci.

RemoteSens.,

51,

3077–3088,

doi:10.1109/TGRS.2012.2211607.

Man-made EM Noise and Electromagnetic Compatibility (EMC)
Commission E in Japan is holding technical meetings monthly in collaboration with the Technical Committee on
Electromagnetic Compatibility (EMCJ) of the Institute of Electronics, Information and Communication Engineers (IEICE),
and the Technical Committee on Electromagnetic Compatibility of the Institute of Electrical Engineers of Japan (IEEJ-EMC).

Some of the meetings are collocated with other related technical groups.
The followings are the excerpted contents of the technical reports presented at the meetings held between November
2013 and October 2016. Recent trends of the research topics are, in addition to the traditional topics such as emission
and immunity measurement and evaluation technologies of circuit and system EMC or EM absorbers and shields, newtopics on EMC design technology related to IC and chips, automotive EMC technology, and power electronics EMC
also attract the interest. Another new area is the information security related to electromagnetic waves and couplings.

E1. Electromagnetic Information Security
Information leakage from digital circuits has been investigated by research groups at Tohoku University [Aoki, Homma,
Sone] and related groups in Tohoku Gakuin [Hayashi], Okayama University [Iokibe]. Iokibe et al. evaluated the internal
activities of AES cryptographic circuit as equivalent current sources, and revealed that the variation of the supply current
was the source of information leakage. Sone, Hayashi et al. demonstrated fault injection method with intentional
electromagnetic interference (IEMI). They demonstrated the leakage of password through software keyboard input on atablet PC, and discussed countermeasures for it.

References E1.
Makiko Otomo, Kaoru Arai, Tetsuo Ito, Yasushi Endo, Masahiro Yamaguchi, Yu-ichi Hayashi, Hideaki Sone, Naofumi
Homma, Takafumi Aoki (Tohoku Univ.) [Aoki 2014], “Reduction Effect of Information Leakage from a Cryptographic LSI
by a Magnetic Thin Film,” IEICE Tech. Rep., EMCJ2013-134, Mar. 2014.
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Atsushi Nagao, Yuichiro Okugawa, Kazuhiro Takaya (NTT), Yu-ichi Hayashi, Naofumi Homma, Takafumi Aoki (Tohoku
Univ.) [Aoki 2015], “Study on detection method for clock error due to intentional electromagnetic interference,” IEICE Tech.
Rep., EMCJ2014-100, Jan. 2015.
Go Itami, Yohei Toriumi, Shinji Goto, Kazuhiro Takaya (NTT), Yu-ichi Hayashi, Naofumi Homma, Takafumi Aoki (Tohoku
Univ.) [Aoki 2016], “A study on possibility of screen reconstruction by frequency analysis of electromagnetic emanation frommobile devices,” IEICE Tech. Rep., EMCJ2015-125, Mar. 2016.
Megumi Saito (Tohoku Univ.), Yu-ichi Hayashi (Tohoku Gakuin Univ.), Takaaki Mizuki, Hideaki Sone (Tohoku Univ.)[Hayashi 2015], “Effect of Clock Frequencies on EM Information Leakage from Cryptographic Devices,” IEICE Tech. Rep.,
EMCJ2015-24, June 2015.
Yu-ichi Hayashi (Tohoku Gakuin Univ.) [Hayashi 2016a], “EM Information Security of Tablet PCs in Public Space,” IEICE
Tech. Rep., EMCJ2016-41, June 2016.
Nobuhiro Tai, Kengo Iokibe, Hiroto Kagotani, Hiroyuki Onishi, Kazuhiro Maeshima, Yoshitaka Toyota (Okayama Univ.),
Tetsushi Watanabe (Industrial Technology Center of Okayama Prefecture) [Iokibe 2014], “Investigation on AES Circuites inInformation-Leaking-Behavior by Means of Internal Equivalent Current Source,” IEICE Tech. Rep., EMCJ2014-12, June
2014.
Yusuke Yano, Kengo Iokibe, Yoshitaka Toyota (Okayama Univ.) [Iokibe 2016a], “Investigation of Relationship between
Signal-to-Noise Ratio of EM Information Leakage and Side-Channel Attacking Cost,” IEICE Tech. Rep., EMCJ2016-25,
June 2016.
Kengo Iokibe, Naoki Kawata, Yusuke Yano, Hiroto Kagotani, Yoshitaka Toyota (Okayama Univ.) [Iokibe 2016b], “Attempt
for Determining Cryptographic Circuit Blocks Leaking Side-Channel Information Based on Internal Current Source,” IEICE
Tech. Rep., EMCJ2016-74, Oct. 2016.
Ryo Ishikawa, Toshinori Mori, Kimihiro Tajima (NTT-AT), Yasunao Suzuki, Kazuhiro Takaya (NTT NT Labs.) [Ishikawa
2016], “A Study on the risk evaluation of countermeasure technique for preventing electromagnetic information leakage,”
IEICE Tech. Rep., EMCJ2015-124, Mar. 2016.
Daisuke Fujimoto, Noriyuki Miura, Makoto Nagata (Kobe Univ.), Yu-ichi Hayashi, Naofumi Homma (Tohoku Univ.), Shivam
Bhasin, Jean-Luc Danger (Telecom Paristech) [Nagata 2014], “Side-Channel Leakage on Silicon Substrate of CMOS
Cryptographic Chip,” IEICE Tech. Rep., EMCJ2014-10, June 2014.
Cancio Monteiro, Yasuhiro Takahashi, Toshikazu Sekine (Gifu Univ.) [Sekine 2014], “Security Evaluation of CSSALCountermeasure against Side-Channel Attacks Using Frequency Spectrum Analysis,” IEICE Tech. Rep., EMCJ2014-82, Dec.
2014.
Ko Nakamaura, Yu-ichi Hayashi, Takaaki Mizuki, Naofumi Homma, Takafumi Aoki, Hideaki Sone (Tohoku Univ.) [Sone2014a], “Identification Method of Fault-injected Timing on Cryptographic Devices Using Side-channel Information,” IEICE
Tech. Rep., EMCJ2014-11, June 2014.
Ko Nakamaura, Yu-ichi Hayashi, Takaaki Mizuki, Naofumi Homma, Takafumi Aoki, Hideaki Sone (Tohoku Univ.) [Sone2014b], “Feasibility of Fault-injected Timing Identification for Actual Cryptographic Devices Using Side-channel
Information,” IEICE Tech. Rep., EMCJ2014-23, July 2014.
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Mizuki Kobayashi, Yu-ichi Hayashi, Naofumi Homma, Takaaki Mizuki, Takafumi Aoki, Hideaki Sone (Tohoku Univ.) [Sone2014c], “Effect of Precisely Timed Intentional Electromagnetic Interference on Internal Operation in Cryptographic Device,”
IEICE Tech. Rep., EMCJ2014-46, Oct. 2014.
Ko Nakamaura (Tohoku Univ.), Yu-ichi Hayashi (Tohoku Gakuin Univ.), Takaaki Mizuki, Naofumi Homma, Takafumi Aoki,
Hideaki Sone (Tohoku Univ.) [Sone 2015], “Feasibility of Fault Injection Time Estimation Using EM Leakage from
Cryptographic Devices,” IEICE Tech. Rep., EMCJ2015-43, July 2015.
Airi Sugimoto (Tohoku Univ.), Yu-ichi Hayashi (Tohoku Gakuin Univ.), Takaaki Mizuki, Hideaki Sone (Tohoku Univ.) [Sone2016a], “Study on Side-Channel Analysis Based on Asynchronous Measurement,” IEICE Tech. Rep., EMCJ2016-24, June
2016.
Takuya Itoh (Tohoku Univ.), Yu-ichi Hayashi (Tohoku Gakuin Univ.), Takaaki Mizuki, Hideaki Sone (Tohoku Univ.) [Sone2016b], “Study on Fault Sensitivity Analysis of Cryptographic Device under IEMI,” IEICE Tech. Rep., EMCJ2016-43, June2016.
Yu-ichi Hayashi, [Hayashi 2016b], “State-of-the-art research on electromagnetic information security,” Radio Science, Vol
51, No. 7, pp.1213-1219, July 2016.

E2. Integrated Circuits and Chip Level EMC
The focus of research has shifted from “noise emission” to “immunity” of integrated circuits. Toyota et al. injected theelectrical fast transient / burst (EFT/B) signal to FPGA and investigate the coupling conditions. Wada and Matsushima
applied the direct RF power injection (DPI) method, IEC 62132-4, to LDO (low drop out) voltage regulators and constructed
a macro model for immunity simulation.

References E2.
Jeff Cheng, Yen-Tang Chang (BSMI), Han-Nien Lin (Feng-Chia Univ.) [Cheng 2016], “Design and Application of Radio
Frequency Current Probe for IC-EMI Measurement,” IEICE Tech. Rep., EMCJ2016-30, June 2016.
Masashi Kawakami, Kenji Hashimoto (UEC), Kimitoshi Murano (Tokai Univ.), Yoshio Kami, Fengchao Xiao (UEC)[Kawakami 2014], “A Fundamental Study on Derivation of EMI from Through Silicon Vias (TSV),” IEICE Tech. Rep.,
EMCJ2014-14, June 2014.
Kazuhiro Maeshima, Kengo Iokibe (Okayama Univ.), Tetsushi Watanabe (Industrial Technology Center of Okayama
Prefecture), Yoshitaka Toyota (Okayama Univ.) [Toyota 2014], “Comparison of Electromagnetic Injection Configurationsin terms of Induced Disturbance Observed near Integrated Circuit on Board,” IEICE Tech. Rep., EMCJ2014-22, July 2014.
Hidetoshi Miyahara, Nobuaki Ikehara, Tohlu Matsushima, Takashi Hisakado, Osami Wada (Kyoto Univ.) [Wada 2015],“Correlation between Immunity Behavior and Internal Terminal Voltage of LDO Regulator Circuits,” IEICE Tech. Rep.,
EMCJ2015-33, July 2015.
Tohlu Matsushima, Nobuaki Ikehara, Hidetoshi Miyahara, Takashi Hisakado, Osami Wada (Kyoto Univ.) [Matsushima
2015], “Macro model of LDO voltage regulator for estimation of immunity to conducted disturbance,” IEICE Tech. Rep.,
EMCJ2015-30, June 2015.
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E3. Printed Circuit Board (PCB) EMC, Transmission Lines and Cables
Many technical reports have been presented on PCB EMC design and transmission lines and cables. Tobana discussed
radiated emission from PCB traced on a slot. Maekawa investigated PCB layout design in relation to signal bit-error- rate
(BER) and intra EMC of digital wireless equipment. Sekine et al. discussed extraction of circuit characteristics of signaltransmission utilizing S parameters. Mechanism of the common mode excitation and its reduction techniques were discussed
by Kami, Kayano, Kasuga, Sasaki, et al. Design of power distribution network on multi-layer PCB and application of EBG(Electromagnetic Band Gap) structure was discussed by Toyota et al. EMC design of multi-layer PCB was started on digital
circuit design. But now the importance of EMC design in analog and power electronics circuits with low frequency operationis strongly increasing.

References E3.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2014a], “Analysis of crosstalk between microstrip
lines placed parallel with a slot,” IEICE Tech. Rep., EMCJ2013-138, Mar. 2014.
Kunihiro Takamatsu, Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2014b], “Basic Study ofTransmission of Microstrip Line Placed on Ground Slot,” IEICE Tech. Rep., EMCJ2014-44, Oct. 2014.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2014c], “Analysis of emission from ground slots
coupled by microstrip line,” IEICE Tech. Rep., EMCJ2014-45, Oct. 2014.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2015a], “Analysis of electromagnetic coupling
between ground slot in each layer in PCB,” IEICE Tech. Rep., EMCJ2015-72, Oct. 2015.
Kunihiro Takamatsu, Teruo Tobana, Takayuki Sasamori, Youji Isota (Akita Pre. Univ.) [Tobana 2015b], “Study ofTransmission Line Method of a Microstrip Line placed on Ground Slot,” IEICE Tech. Rep., EMCJ2015-99, Dec. 2015.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2016], “Study of crosstalk between ground slot
and lines in PCB with 3 layers,” IEICE Tech. Rep., EMCJ2015-132, Mar. 2016.
Shin-ichi Wada (TMC), Koichiro Sawa (NIT) [Wada 2015], “An Evaluating Method for Fundamental Dynamical Parametersof Objects on a Printed Circuit Board (4) - A theoretical method for the responses of the oscillation system by a rectangular
waveform or quasi-impulsive ones --,” IEICE Tech. Rep., EMCJ2015-49, July 2015.
Tomoya Maekawa (Panasonic), Kazuhiro Honda, Koichi Ogawa (Toyama Univ.) [Maekawa 2015], “An Optimal Layout
Based on the Evaluation of Signal Bit-Error-Rate using Weighted Magnetic Field Product for Intra-EMC,” IEICE Tech.
Rep., EMCJ2015-16, May 2015.
Tomoya Maekawa (Panasonic), Kazuhiro Honda, Kun LI, Koichi Ogawa (Toyama Univ.) [Maekawa 2016], “A Method of
Reducing the Internal Interference Noise in Intra-EMC using Decoupling Techniques,” IEICE Tech. Rep., EMCJ2016-45,
July 2016.
Tomohiro Enda, Shinichi Sasaki, Shunsuke Baba (Saga Univ) [Sasaki 2014], “Crosstalk estimated in Analog-Digital Mixed
Circuit Boards - The effect of ground slot -,” IEICE Tech. Rep., EMCJ2013-119, Jan. 2014.
Shinji Ohono, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2014], “Conditions of loads for 4-port Sparameter estimation by two or one-port measurements,” IEICE Tech. Rep., EMCJ2014-4, Apr. 2014.
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Daisuke Saito, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2015a], “Transient analysis of circuit with nonuniform ground potential based on the state variable approach,” IEICE Tech. Rep., EMCJ2015-73, Oct. 2015.
Shinji Ohono, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2015b], “Improvement of the estimation method
for multi-port S parameters through the connection circuit with unnecessary leakage coupling between the ports,” IEICE
Tech. Rep., EMCJ2015-101, Dec. 2015.
Yuuya Kojima, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2016a], “S-parameter estimation method for
multi-port circuit using T parameters of fixture,” IEICE Tech. Rep., EMCJ2016-80, Oct. 2016.
Xiangyu Chen, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2016b], “Time domain equivalent circuit ofterminated nonuniform transmission line under the influence of external electromagnetic field,” IEICE Tech. Rep.,
EMCJ2016-47, July 2016.
Kengo Iokibe, Yoshitaka Toyota (Okayama Univ.) [Iokibe 2014], “Flexibility of On-Board RL Snubber for PDN ResonanceDamping in terms of Mount Location,” IEICE Tech. Rep., EMCJ2014-81, Dec. 2014.
Hiroaki Matsumoto, Shinichi Sasaki (Saga Univ.) [Sasaki 2014], “Examination of reduction technique for radiation noisefrom power supply layers in PCB,” IEICE Tech. Rep., EMCJ2013-117, Jan. 2014.
Ryuji Minami, Shinichi Sasaki, Shunsuke Baba (Saga Univ) [Sasaki 2015], “Reduction Technique of Radiation noise frompower supply layers in PCB using Attached Resistor Method, -- Application of Thin PCB --,” IEICE Tech. Rep., EMCJ201485, Jan. 2015.
Ryuji Minami, Shinichi Sasaki (Saga Univ.) [Sasaki 2016], “Reduction Technique of Radiation noise from power supply
layers in PCB using Attached Resistor Method -- Examination of optimum Resistance value --,” IEICE Tech. Rep.,
EMCJ2015-106, Jan. 2016.
Toshiki Mikura, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.) [Toyota 2014], “Investigation of Position to Install a
Capacitor to Power Distribution Network for Suppressing Mode Conversion,” IEICE Tech. Rep., EMCJ2014-32, Sep. 2014.
Yuki Yamashita, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.), Koichi Kondo, Shigeyoshi Yoshida (NEC TOKIN),
Toshiyuki Kaneko (KCS) [Toyota 2015a], “A Vialess Open-stub EBG Structure for Power-bus Noise Reduction,” IEICE
Tech. Rep., EMCJ2014-95, Jan. 2015.
Terumasa Kubo, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.) [Toyota 2015b], “A Design Methodology of Lossy
Resonator Filter Taking into Account Electric Characteristics of Ferrite Thin Film,” IEICE Tech. Rep., EMCJ2015-86, Nov.
2015.
Yoshitaka Toyota (Okayama Univ.) [Toyota 2015c], “Planar EBG Structure with Ferrite Thin Film for Power-bus Noise
Reduction,” IEICE Tech. Rep., EMCJ2015-21, June 2015.
Yoshitaka E9-1. EM wave absorber, Yuki Yamashita, Kengo Iokibe (Okayama Univ.), Koichi Kondo, Shigeyoshi Yoshida(NEC TOKIN), Masanori Naito, Toshiyuki Kaneko (KCS) [Toyota 2016a], “Miniaturization of Planar EBG Structure by
Using Interdigital Electrodes,” IEICE Tech. Rep., EMCJ2016-3, Apr. 2016.
Xingxiaoyu Lin, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.), Toshiyuki Kaneko (KYOCERA) [Toyota 2016b],“Miniaturization of a Planar EBG Structure by Using Double Power Plane,” IEICE Tech. Rep., EMCJ2016-57, Sep. 2016.
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Mitsutaku Yamamura, Yoshio Kami (UEC), Kimitoshi Murano (Tokai Univ.), Fengchao Xiao (UEC) [Kami 2014],“Analysis of Transmission Characteristics for Twisted Pair Cables using the RLGC Parameters of the Cable,” IEICE Tech.
Rep., EMCJ2014-80, Dec. 2014.
Yuki Kawamitsu, Yoshio Kami (UEC), Kimitoshi Murano (Tokai Univ.), Fengchao Xiao (UEC) [Kami 2015a], “CoAnalysis for SI/PI Problems of Differential Line in Multi-Layer PCB,” IEICE Tech. Rep., EMCJ2014-87, Jan. 2015.
Manabu Kawaguchi, Yoshio Kami (UEC), Kimitoshi Murano (Tokai Univ.), Fengchao Xiao (UEC) [Kami 2015b],“Complex electromagnetic field estimation from 2D near magnetic field by using Plane Wave Spectrum method,” IEICE
Tech. Rep., EMCJ2014-105, Mar. 2015.
Mitsutaku Yamamura, Yoshio Kami (UEC), Kimitoshi Murano (Tokai Univ.), Fengchao Xiao (UEC) [Kami 2016], “Studyon Application of the Multi-Conductor Transmission Line Modeling for Various Cables,” IEICE Tech. Rep., EMCJ2015104, Jan. 2016.
Takuya Ito, Takashi Kasuga (NIT, Nagano College), Teppei Ikeda, Atsushi Nakamura (UTI) [Kasuga 2015], “Study on
Electromagnetic Analysis Method Implemented the Frequency Dispersibility of Differential Transmission Line Board,”
IEICE Tech. Rep., EMCJ2015-100, Dec. 2015.
Yoshiki Kayano (Akita Univ.), Hiroshi Inoue (The Open Univ.) [Kayano 2014a], “A Study on Arc Blowing for Different
Surface and Shape Silver-based Contacts using External DC Magnetic Field,” IEICE Tech. Rep., EMCJ2014-28, July 2014.
Yoshiki Kayano (Akita Univ.), Hiroshi Inoue (The Open Univ.) [Kayano 2014b], “Transmission Characteristics andShielding Effectiveness of Shielded-Flexible Flat Cable for Differential-Signaling,” IEICE Tech. Rep., EMCJ2014-33, Sep.
2014.
Yoshiki Kayano (Akita Univ.), Hiroshi Inoue (The Open Univ.) [Kayano 2015], “A Study on Imbalance Component and
EM Radiation from Bent Equi-Length Differential-Paired Lines,” IEICE Tech. Rep., EMCJ2015-20, June 2015.
Yoshiki Kayano (UEC), Hiroshi Inoue (The Open Univ.) [Kayano 2016a], “Identifying Dominant Factor of EMI of
Asymmetrical Differentia-Paired Lines with Different Termination Condition,” IEICE Tech. Rep., EMCJ2016-32, June
2016.
Yoshiki Kayano (UEC), Hiroshi Inoue (The Open Univ.) [Kayano 2016b], “A Study on Multi-Layer F-SIR TypeTransmission Line for Negative Group Delay and Slope Characteristics (Part 2),” IEICE Tech. Rep., EMCJ2016-48, July
2016.
Ding-Bing Lin, Yi-Chien Chen (NTUT) [Lin 2016], “A Broadband Filter Design for Common-Mode Noise Rejection with
Multilayer Mushroom Structure in Differential Transmission Line,” IEICE Tech. Rep., EMCJ2016-29, June 2016.
Farhan Mahmood (NTT), Soichiro Yoshikawa (TITech.), Ken Okamoto, Kazuhiro Takaya (NTT), Atsuhiro Nishikata(TITech.) [Mahmood 2016], “Voltage Feedback Amplifier with Ferrite Cores for Common-mode Noise Suppression,”
IEICE Tech. Rep., EMCJ2015-130, Mar. 2016.
Tohlu Matsushima, Takashi Hisakado, Osami Wada (Kyoto Univ.), Shinpei Oe, Tsuyoshi Sasaoka, Yasuharu Sakai (Kansai
Electric Power Co. Inc.) [Matsushima 2016], “TDR with Utility-Pole-Distance Resolution Considering Mode Conversion
for Detection of Fault Type in Power Distribution Lines,” IEICE Tech. Rep., EMCJ2016-52, Sep. 2016.
9

Naoki Takata (Tokai Univ.), Yoshio Kami, Fengchao Xiao (UEC), Majid Tayarani (IUST), Kimitoshi Murano (Tokai Univ.)[Murano 2015], “Susceptibility Characteristics of Transmission Line in BCI test,” IEICE Tech. Rep., EMCJ2014-84, Jan.
2015.
Misaki Hoshino (Tokai Univ.), Yoshio Kami, Fengchao Xiao (UEC), Majid Tayarani (IUST), Kimitoshi Murano (Tokai
Univ.) [Murano 2016], “Estimation of transmission line susceptibility to plane wave using BCI test method -- Theoreticalexamination --,” IEICE Tech. Rep., EMCJ2015-114, Jan. 2016.
Mutsumi Noro, Daisuke Anzai, Jianqing Wang (NIT) [Noro 2015], “Proposal and Performance Evaluation of CommonMode Noise Cancel Circuit for Wearable ECG,” IEICE Tech. Rep., EMCJ2015-95, Dec. 2015.
Nobuhiro Ashiduka, Shinichi Sasaki (Saga Univ.) [Sasaki 2014], “Reduction Technology of Far-end-Crosstalk in microstrip-line, - Patch-Capacitor -,” IEICE Tech. Rep., EMCJ2013-118, Jan. 2014.
Daisuke Kihara, Shinichi Sasaki, Nobuhiro Ashizuka (Saga Univ.) [Sasaki 2016], “Common-mode Noise reduction for
curved differential signal lines -- Examination of Patch Capacitor attaching method --,” IEICE Tech. Rep., EMCJ2015-109,
Jan. 2016.
Yoshitaka Toyota, Shohei Kan, Kengo Iokibe (Okayama Univ.), Tetsushi Watanabe (Industrial Technology Center of
Okayama Prefecture) [Toyota 2013], “Modal-equivalent-circuit Modeling of Bend Discontinuity of Differential
Transmission Lines,” IEICE Tech. Rep., EMCJ2013-98, Nov. 2013.
Shohei Kan, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.), Tetsushi Watanabe (Okakogi) [Toyota 2014], “Tightly
Coupled Asymmetrically Tapered Bend for Suppressing Mode Conversion Generated at Bend in Differential Transmission
Lines,” IEICE Tech. Rep., EMCJ2013-116, Jan. 2014.
Toshiki Mikura, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.) [Toyota 2015a], “Reduction in Common-mode Noise
Generation by Placing Capacitors at Mode-conversion Positions in Power Distribution Network,” IEICE Tech. Rep.,
EMCJ2015-9, May 2015.
Chenyu Wang, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ) [Toyota 2015b], “Tightly coupled asymmetrically taperd
bend in differential transmission lines for high-density mounting,” IEICE Tech. Rep., EMCJ2015-39, July 2015.
Kumegawa Koji, Iokibe Kengo, Toyota Yoshitaka (Okayama Univ.) [Toyota 2016], “Modeling of Current Probe andSimulation with Modal Equivalent Circuit in Common-mode Current Injection to Cable,” IEICE Tech. Rep., EMCJ2015115, Jan. 2016.
Chi-Hsuan Cheng, Tzong-Lin Wu (NTU) [Wu 2016], “A TSV-Based Common-Mode Suppressing Filter in 3-D ICs,” IEICE
Tech. Rep., EMCJ2016-20, June 2016.
Teruaki Kato, Naoki Koshi, Taiki Shibano (Aisin), Kojima takashi, Hosokawa Hideki (TCRDL) [Kato 2015], “Commonmode conducted noise Analysis in the AM radio band for Automotive Motor Control Unit,” IEICE Tech. Rep., EMCJ201590, Dec. 2015.
Shunsuke Ohara, Satoshi Ogasawara, Masatsugu Takemoto (Hokkaido Univ.), Yushin Yamamoto (TMEIC) [Ogasawara
2016], “Performance Improvement of an Active Common-noise Canceller for Reducing Common-Mode Noise Generated
by Inverters,” IEICE Tech. Rep., EMCJ2016-14, May 2016.
10

Takashi Kasuga, Yuhi Hayaoka, Hiromu Kawakami (NIT, Nagano College), Hiroshi Inoue (Open Univ.) [Kasuga 2015],“Measurement on Electromagnetic Field Strength from Different Power Line Pattern with Multiple LED bulbs,” IEICE Tech.
Rep., EMCJ2015-98, Dec. 2015.
Akihito Kobayashi, Yasuhiro Shiraki, Yuichi Sasaki, Naoto Oka, Hideyuki Oh-hashi (Mitsubishi Electric) [Kobayashi 2014],“Noise Suppression Effect by Three-Terminal Capacitors on Power Line for Digital Circuit Using,” IEICE Tech. Rep.,
EMCJ2014-18, July 2014.
Satoshi Mizue, Nobuo Kuwabara (KIT) [Kuwabara 2016], “Influence of ground line position in 3-wires power line to signaltransmission characteristics,” IEICE Tech. Rep., EMCJ2016-75, Oct. 2016.
Masamitsu Tokuda (Univ. of Tokyo), Chiharu Miyazaki, Yuichi Sasaki (Mitsubishi Electric), Katsuyuki Tanakajima(Intertek), Hiroyuki Ohsaki (Univ. of Tokyo) [Tokuda 2014], “Induction characteristics of power line models with no branch
and outlet branch from surrounding magnetic field, - Experimental Discussion by Using Open Area Test Site -,” IEICE Tech.
Rep., EMCJ2014-13, June 2014.

E4. Automotive EMC
Due to the progress of electronics in the control of automobiles and the trend of the conversion to electric vehicles, theresearch topics on automobile EMC is increasing. Due to the high performance of the power electronics devices, the noise
frequency spectrum is spreading widely. At the same time, discussion on the reliability of the in-vehicle network is also
active. There are many examples of examining and combining low noise design of power electronics equipment andsustaining EMC of electronic equipment in automotive environment.
Efforts to improve the repeatability of conducted and radiated emission measurement and radiated immunity tests havebeen continued. Recently, reports on studies on immunity test methods for automotive equipment are on the rise. In order tosecure the safety performance of automobiles including automatic operation, the importance of immunity test and highimmunity EMC design will increase the importance in near future. In particular, to support a system combining onboard
electronic equipment with high functionality, the EMC test method for automotive networks is being studied andstandardization is on going also in IEC, and future progress is expected.

References E4.
Yasuhiro Fukagawa, Shinji Fukui, Shuichi Kono, Tatsuya Ozawa (Nippon Soken,Inc.) [Fukagawa 2013], “Measurement ofPoynting Vector in Automobile Cabin by 3 Axis Magnetic Field Probe,” IEICE Tech. Rep., EMCJ2013-101, Dec. 2013.
Takashi Nomura, Michihira Iida, Katsumi Nakamura, Shuji Agatsuma (DENSO) [Nomura 2015], “Propagation Modelingof AM-Band Electro-Magnetic Noise from Vehicle-Mounted Electronic Device to Antenna,” IEICE Tech. Rep., EMCJ201496, Jan. 2015.
Makoto Torigoe, Yoshiyuki Tsuchie, Yasuo Yahagi, Takashi Suga, Hideki Osaka (Hitachi), Takayuki Inagaki (Hitachi
Automotive) [Torigoe 2013], “Estimation of Conducted Emission from Automotive Components by Using Noise Equivalent
Circuit,” IEICE Tech. Rep., EMCJ2013-92, Nov. 2013.
Kiyokazu Akiyama, Masakazu Ikeda, Hidenori Oosai (SOKEN), Yasunari Yanagiba, Jyun Akimichi (DENSO) [Akiyama
2016], “Reduction of Signal Reflection at Via in High Speed Transmission Line,” IEICE Tech. Rep., EMCJ2015-108, Jan.
2016.
11

Yuichiro Sato, Satoshi Denno (Okayama Univ.), Toshikazu Karube (Honda R&D co.LTD) [Denno 2015], “Adaptive
periodic noise cancellation of for electric vehicles,” IEICE Tech. Rep., EMCJ2015-48, July 2015.
Noboru Maeda, Shinji Fukui, Takashi Naoi (NIPPON SOKEN), Kouji Ichikawa (DENSO), Toshikazu Sekine, Yasuhiro
Takahashi (Gifu Univ.) [Maeda 2013], “Estimation for 2r-port S-parameters by the r-Port Measurements,” IEICE Tech. Rep.,
EMCJ2013-107, Dec. 2013.
Keisuke Nakamura, Kenji Sogo, Michiharu Yamada, Kouji Ichikawa (DENSO) [Nakamura 2015], “Influence on IC
Operation by Internal Electric Field of Metal Enclosure during Radiated Immunity Testing,” IEICE Tech. Rep., EMCJ201532, July 2015.
Yasunori Oguri, Kenji Sogo, Seiji Nagakusa, Makoto Tanaka (DENSO) [Oguri 2015], “Measurement Method for Induced
Current under Radiated Immunity Test,” IEICE Tech. Rep., EMCJ2015-34, July 2015.
Junzo Ooe (TOYOTA MOTOR CORP.) [Ooe 2015], “Progress of the vehicle EMC, and the future prospects,” IEICE Tech.
Rep., EMCJ2015-102, Dec. 2015.
Tomohiro Yoshikawa, Jianqing Wang (NIT), Yasunori Oguri, Makoto Tanaka, Michihira Iida (DENSO) [Wang 2016],“Non-contact measuring method for impedance of harness's load using two probes,” IEICE Tech. Rep., EMCJ2016-44, July
2016.
Ichiro Akahori, Takashi Kimura, Yoji Shitaokoshi (DENSO EMCES) [Akahori 2013], “Development of a horn antenna for
immunity testing,” IEICE Tech. Rep., EMCJ2013-100, Dec. 2013.

E5. Power Electronics EMC
As mentioned in the previous section, the requirement for supplying power to electronic equipment with low noise is
becoming stricter. At the same time, researches on new power devices such as SiC and GaN are progressing. In these devices,
low on-resistance and low loss due to high-speed operation are significant advantages, but also they cause large
electromagnetic noise generation.
Funaki and Ibuchi clarified the mechanism of noise generation by utilizing equivalent circuit modeling of powerelectronics devices and operation mode analysis, and compare the characteristics of new devices such as SiC and theconventional Si devices, and investigated low noise design. In addition to that, there are also presentations on low noise
design and common mode reduction methods of power electronics circuits.
Another trend in the field of power electronics is WPT (wireless power transmission). With improvement of efficiency of
WPT, studies on noise reduction technique are in progress.

References E5.
Takuya Arafune, Yasunori Kobori, Haruo Kobayashi (Gunma Univ.) [Arafune 2015], “Spread Spectrum Clocking with
Selective Notch Frequencies Using Pulse Coding for Switching Converters,” IEICE Tech. Rep., EMCJ2015-88, Nov. 2015.
Katsuya Sugiki, Takaaki Ibuchi, Tsuyoshi Funaki (Osaka Univ.) [Funaki 2015], “A study on equivalent circuit modeling oftransformer to simulate ringing phenomena associated with switching operation in fly-back converter,” IEE-J Tech. Rep.,
EMC-15-009 June 2015.
Eisuke Masuda, Takaaki Ibuchi, Tsuyoshi Funaki (Osaka Univ.), Hirotaka Otake, Tatsuya Miyazaki, Yasuo Kanetake,12

Takashi Nakamura (ROHM) [Funaki 2016a], “A study on influence of interconnect inductance of a SiC power module ontransient characteristic,” IEICE Tech. Rep., EMCJ2016-15, May 2016.
Eisuke Masuda, Takaaki Ibuchi, Tsuyoshi Funaki (Osaka Univ.), Hirotaka Otake, Tatsuya Miyazaki, Yasuo Kanetake,Takashi Nakamura (ROHM) [Funaki 2016b], “A current distribution measurement with magnetic near field intensity fordesigning wiring pattern in a SiC power module,” IEICE Tech. Rep., EMCJ2016-50, Sep. 2016.
Issei Hashimoto, Kenji Shiba (TUS) [Hashimoto 2014], “Reduction of Radiation Magnetic Field from Transcutaneous
Energy Transmission System by 3 Phase Alternating Current, - Fundamental Study by Electromagnetic Analysis -,”IEICE

Tech. Rep., EMCJ2013-137, Mar. 2014.
Tetsu Sunohara, Akimasa Hirata (NIT), Teruo Onishi (NTT DOCOMO) [Hirata 2015a], “Compliance Assessment Methodof Wireless Power Transfer System at 6 MHz Band,” IEICE Tech. Rep., EMCJ2014-91, Jan. 2015.
Takuya Shimamoto, Ilkka Laakso, Akimasa Hirata (NIT) [Hirata 2015b], “Analysis of Induced Electric Field in the Human
Body Models for Different Coil Shapes of Wireless Power Transfer System in Electric Vehicle,” IEICE Tech. Rep.,
EMCJ2014-90, Jan. 2015.
Takaaki Ibuchi, Katsuya Sugiki, Tsuyoshi Funaki (Osaka Univ.) [Ibuchi 2015a], “A study on ringing simulation by modelinghigh-frequency transformer characteristic for fly-back converter,” IEICE Tech. Rep., EMCJ2014-109, Mar. 2015.
Takaaki Ibuchi, Tsuyoshi Funaki (Osaka Univ.) [Ibuchi 2015b], “A study on characterization of conducted emission in DCDC converter based on spectrogram analysis,” IEE-J Tech. Rep., EMC-15-008 June 2015.
Takaaki Ibuchi, Tsuyoshi Funaki (Osaka University) [Ibuchi 2016], “An experimental investigation on conducted emission
characteristics of SiC MOSFET in a DC-DC boost converter,” IEE-J Tech. Rep., EMC-16-36 June 2016.
Yoshihiro Kida, Tatsuya Ozawa, Shinji Ohoka, Yasuhiro Fukagawa (SOKEN), Kaoru Torii (TMC) [Kida 2015], “FM-Band
Noise Current Analysis Focused on Grounding of Power Converter,” IEICE Tech. Rep., EMCJ2015-92, Dec. 2015.
Yasunori Kobori, Shinya Ochiai (NIT, Oyama College), Kotaro Kaneya, Nobukazu Tsukiji, Nobukazu Takai, Haruo
Kobayashi (Gunma Univ.) [Kobori 2015a], “EMI Reduction for Switching Converter with Analog Spread Spectrum,” IEICE
Tech. Rep., EMCJ2014-93, Jan. 2015.
Yasunori Kobori (NIT, Oyama College/Gunma Univ.), Nobukazu Tsukiji, Nobukazu Takai, Haruo Kobayashi (Gunma
Univ.) [Kobori 2015b], “EMI Reduction by Extended Spread Spectrum in Switching Converter,” IEICE Tech. Rep.,
EMCJ2015-18, June 2015.
Taiki Nishimoto, Akira Minegishi, Masahiro Yamaoka, Kazuyuki Sakiyama, Toru Yamada (Panasonic), Tohlu Matsushima,
Osami Wada (Kyoto Univ.) [Nishimoto 2016], “Impedance Balance Method Applicable to Asymmetric Switching Circuits
for Reducing Common-Mode Noise,” IEICE Tech. Rep., EMCJ2016-51, Sep. 2016.
Ichiro Sasada, Takuya Matsuda (Kyushu Univ.), Hiroshi Yamamoto, Takashi Saito, Mitsutaka Mutho, Takashi Nishida(JAXA) [Sasada 2016], “Conducted EMI problem in a large scale overhead crane driven by the matrix converter,” IEICE
Tech. Rep., EMCJ2015-123, Jan. 2016.
Hiroki Geshi, Kengo Iokibe (Okayama Univ), Tetsushi Watanabe (Industrial Technology Center of Okayama Prefecture),
Yoshitaka Toyota (Okayama Univ) [Toyota 2015], “Linear Equivalent Circuit Modeling of Power Converter Circuit for13

Conducted Disturbance Estimation, - Impact Investigation of Switching Frequency Fluctuation -,” IEICE Tech. Rep.,
EMCJ2015-5, Apr. 2015.
Yusuke Yano, Hiroki Geshi, Kengo Iokibe (Okayama Univ.), Tetsushi Watanabe (Industrial Technology Center of Okayama
Prefecture), Yoshitaka Toyota (Okayama Univ.) [Toyota 2016a], “Linear Equivalent Circuit Modeling of Power Converter
Circuit for Condunted Disturbance Estimation -- Impact of Trigger Timing on the modeling --,” IEICE Tech. Rep.,
EMCJ2016-16, May 2016.
Naoki Kawata, Yusuke Yano, Kengo Iokibe, Yoshitaka Toyota (Okayama Univ.) [Toyota 2016b], “Validation of
Optimization Method of On-board RL Snubber According to Q Factor,” IEICE Tech. Rep., EMCJ2016-27, June 2016.
Ko Ogata, Keiji Wada (TMU) [Wada 2016a], “Influence of Mutual Induction on Switching Characteristics Inside a High
Speed Power Converter,” IEICE Tech. Rep., EMCJ2016-17, May 2016.
Keiji Wada (TMU), Hideki Ayano (Tokyo College), Satoshi Ogasawara (Hokkaido Univ.), Toshihisa Shimizu (TMU)[Wada 2016b], “Research Trends of EMC for Power Electronics,” IEICE Tech. Rep., EMCJ2016-18, May 2016.
Kentaro Kawabe, Yangjun Zhang (Ryukoku Univ.), Ikuo Awai (Ryutech) [Kawabe 2016], “Proposal and basic study of atransparent water shield for the magnetic ally coupled WPT system -- Toward resolution of EMC problems --,” IEICE Tech.
Rep., EMCJ2016-9, May 2016.
Wei Liao, Jingjing Shi, Jianqing Wang (NIT) [Liao 2016], “EMI Evaluation of Wearable ECG for a 6.8 MHz WirelessPower Transfer System,” IEICE Tech. Rep., EMCJ2016-1, Apr. 2016.
Ding-Bing Lin, Pei-Chuan Huang (National Taipei Univ. of Tech.) [Lin 2016], “Efficiency Enhancement of Near Field
Coupled Antenna Pair Using Reflector for Wireless Power Transmission,” IEICE Tech. Rep., EMCJ2016-34, June 2016.
Yuki Fukuda, Masao Taki (Tokyo Metropolitan Univ.) [Taki 2014], “Effects of Microwave Wireless Power transmission in
SPS on Poikilothermic Animals,” IEICE Tech. Rep., EMCJ2013-128, Jan. 2014.
Hiroyuki Yamada, Shohei Fukasawa, Hiroshi Hirayama, Nobuyoshi Kikuma, Kunio Sakakibara (NIT) [Yamada 2014],“Change of characteristic of electromagnetic compatibility by the state of the load for coupled-resonant Wireless Power
Transfer,” IEICE Tech. Rep., EMCJ2013-127, Jan. 2014.

E6. EMC Problems Related to Communication Systems
In the previous National Report, this item was “EMC Problems Related to Telecommunication Systems.” In addition totelecommunication, disturbance problems in communication in relatively near field such as interference in the vicinity of
the WPT system, intra EMC, Indoor communication, Human Body Communication, Inter-vehicle Communication, and soon are treated in many cases these three years.
The era in which IoT attracts attention, the concept of communication is also about to change dramatically. Accordingly
the change of EMC research related to communication is also required.

References E6.
Hiroki Saito, Ryosuke Suga (Aoyama Gakuin Univ.), Kiyomichi Araki (Tokyo Tech.), Osamu Hashimoto (Aoyama Gakuin
Univ.) [Hashimoto 2016], “Improvement of Indoor Wireless LAN Communication Environment by Applying Dry Double
14Wall with FSS to Partition Wall,” IEICE Tech. Rep., EMCJ2015-119, Jan. 2016.
Yuta Sugiyama, Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo), Ikuo Yamashita (Kansai Electric Power)[Hatakeyama 2016], “Study on the Stable Indoor EM Wave Communication System at 920MHz,” IEICE Tech. Rep.,
EMCJ2016-55, Sep. 2016.
Junji Higashiyama, Yoshiaki Tarusawa (NTT DOCOMO) [Higashiyama 2013], “Combination method of electric field fromMIMO Antenna System to Evaluate RF Exposure,” IEICE Tech. Rep., EMCJ2013-94, Nov. 2013.
Suguru Imai, Kenji Taguchi, Tatsuya Kashiwa (Kitami Inst. of Tech.) [Imai 2014], “Analysis of Radio Propagation
Characteristics Considering Car Antenna Positions for Inter-vehicle Communications at Intersection,” IEICE Tech. Rep.,
EMCJ2014-40, Sep. 2014.
Satoshi Ishihara, Teruo Onishi (NTT DOCOMO), Akimasa Hirata (Nagoya Institute of Technology) [Ishihara 2014],“Magnetic Field Measurement Near Wireless Power Transfer Systems For Information Household Appliances,” IEICE Tech.
Rep., EMCJ2014-19, July 2014.
Toshio Ito, Naomichi Nakamura, Shigemi Kikuchi, Yasunori Ogura, Kazuo Murakawa (NTT East), Hironori Makino (NTT
Field Techno), Mototsugu Yamazaki (NTT Facilities), Hitomi Horii, Tatsuya Maeda, Kazuya Sawada, Kazuhisa Imamura(NTT Field Techno) [Ito 2014], “Damages and Mitigations in Telecommunication Access Installations against Lightning,”
IEICE Tech. Rep., EMCJ2013-111, Jan. 2014.
Hiromu Okumura, Nobuo Kuwabara (KIT), Yoshiharu Akiyama, Yuichiro Okugawa (NTT) [Kuwabara 2013], “Influence
on Telecommunication and Mains ports of VDSL Telecommunication Equipment from Injected Disturbances,” IEICE Tech.
Rep.,

EMCJ2013-97, Nov. 2013.

Tomoya Maekawa (Panasonic), Koichi Ogawa (Toyama Univ.) [Maekawa 2014], “An Evaluation of Communication
Performance Based on the Quantitative Assessment of Antenna Interference Power Caused by Intra-EMC in Digital WirelessEquipment,” IEICE Tech. Rep., EMCJ2014-1, Apr. 2014.
Atsushi Nagao, Norihito Hirasawa, Hidenori Ito, Jun Kato (NTT EAST) [Nagao 2016], “Analysis for fault mechanism of
telecommunication equipment caused by WiFi radio waves,” IEICE Tech. Rep., EMCJ2015-122, Jan. 2016.
Ken Okamoto, Farhan Mahmood, Shinji Goto, Kazuhiro Takaya (NTT) [Okamoto 2015], “A Study on Limit and
Measurement Method for Transient Disturbance from Electrical Lighting Equipment in Telecommunication Machine Room,”
IEICE Tech. Rep., EMCJ2015-10, May 2015.
Kotaro Ono, Ken Okamoto, Hidetoshi Tatemichi, Kazuhiro Takaya (NTT) [Ono 2015], “A Study of Evaluation Method forElectromagnetic Interference Affecting Digital Communication Systems,” IEICE Tech. Rep., EMCJ2015-31, July 2015.
Kentaro Murayama, Maya Yasuda, Kazuhiko Kobayashi, Kenji Saegusa (Nihon Univ.) [Saegusa 2016], “A Study ofBandwidth Enhancement of the Anechoic Chamber for the Radio Communication Characterization of the Mobile Phone,”
IEICE Tech. Rep., EMCJ2015-128, Mar. 2016.
Kazuhiro Takaya (NTT), Daisuke Tomita, Kouki Umeda, Tohlu Matsushima, Takashi Hisakado, Osami Wada (Kyoto Univ.)[Takaya 2014], “Estimation Method of Packet Error Rate Considering Pulse Duration of Burst Disturbance,” IEICE Tech.
Rep., EMCJ2014-36, Sep. 2014.
15

Daisuke Tomita, Kouki Umeda (Kyoto Univ.), Kazuhiro Takaya (NTT/Kyoto Univ.), Masakatsu Ogawa (Sophia Univ.),
Tohlu Matsushima, Takashi Hisakado, Osami Wada (Kyoto Univ.) [Wada 2014], “Packet Error Rate Estimation of DirectSequence Spread-Spectrum Communication System Considering Frequency of a Narrow-Band Disturbance,” IEICE Tech.
Rep., EMCJ2014-17, July 2014.
Jun Sakuma, Takuya Fujiwara, Taku Kato, Daisuke Anzai, Jianqing Wang (Nagoya Inst. of Tech.) [Wang 2014a], “RealTime ECG Signal Transmission by Human Body Communication and Common Mode Noise Reduction in ECG Signal,”
IEICE Tech. Rep., EMCJ2014-6, Apr. 2014.
Taku Kato, Jun Sakuma, Daisuke Anzai, Jianqing Wang (Nagoya Inst. of Tech.) [Wang 2014b], “Reliability Evaluation of
ECG Signal Transmitted by IR-Based Human Body Communication,” IEICE Tech. Rep., EMCJ2014-20, July 2014.
Yuta Morimoto, Daisuke Anzai, Jianqing Wang (Nagoya Inst. of Tech.) [Wang 2014c], “Evaluation of BER and SAR in
Implant UWB Communication,” IEICE Tech. Rep., EMCJ2014-21, July 2014.
Yohei Yoshida, Daisuke Anzai, Jianqing Wang (NIT) [Wang 2014d], “Propagation Characteristics and BER Evaluation on
On-Body 30MHz/In-Body 400MHz-Band Dual-Mode Communication,” IEICE Tech. Rep., EMCJ2014-77, Dec. 2014.
Masayasu Ohira, Daisuke Anzai, Jianqing Wang (NIT) [Wang 2015], “Study of Propagation Characteristic and Its
Improvemnet Method for Electric Field Communication on Car Body Surface,” IEICE Tech. Rep., EMCJ2015-14, May2015.
Masamitsu Tokuda (Univ. of Tokyo), Yohei Toriumi, Kazuhiro Takaya, Yoshiharu Akiyama (NTT), Hiroyuki Ohsaki (Univ.
of Tokyo) [Tokuda 2016], “Relationship between Leakage and Induction Magnetic Fields Characteristics of the Simplified
Power Line Model-- Comparison between No Branch and Outlet Branch --,” IEICE Tech. Rep., EMCJ2015-107, Jan.

2016.

E7. Numerical Techniques for EMC Simulation
As for EMC simulation, in addition to the conventional large-scale electromagnetic field analysis and numerical analysis,
system analysis of the right place is being carried out by combining transmission line theory, circuit analysis, antenna
analysis by MoM, and so on. Asai presented some new techniques and interesting review on Multi-domain Simulation.

References E7.
Yuki Adachi, Hiroki Anzai (Tsuruoka-NCT) [Adachi 2013], “The Performance Evaluation and Simulation by The FDTD
Method of Microstrip Both Polarization Patch Antenna with A 90 degrees Hybrid Coupler,” IEICE Tech. Rep., EMCJ201395, Nov. 2013.
Shingo Okada, Hideki Asai (Shizuoka Univ.) [Asai 2014a], “Fast Transient Simulation of Non-uniform Distributed
Parameter Circuit with Nonlinear Device by Locally Implicit LIM,” IEICE Tech. Rep., EMCJ2014-74, Dec. 2014.
Yuta Inoue, Hideki Asai (Shizuoka Univ.) [Asai 2014b], “Fast Transient Simulation of the Large Scale Circuit Networks by
Using Multi-GPU LIM,” IEICE Tech. Rep., EMCJ2014-75, Dec. 2014.
Hideki Asai (Shizuoka Univ.) [Asai 2014c], “SI/PI/EMI Simulation Techniques and Their Exploitation for
Chip/Package/Board/Chassis Co-design, - Multi-domain Simulation -,” IEICE Tech. Rep., EMCJ2014-83, Dec. 2014.
16

Tatsuya Kashiwa (Kitami Inst. of Tech.) [Kashiwa 2014], “2FDTD analysis, - past, present, and future -,” IEICE Tech. Rep.,
EMCJ2014-43, Sep. 2014.
Takashi Kojima, Hideki Hosokawa, Atsuhiro Takahashi, Yoshiyuki Hattori (TCRDL), Teruaki Kato, Naoki Koshi, Taiki
Shibano (Aisin Seiki) [Kojima 2015], “Parameter Model of a Ground Plane for Estimation of Conducted Emissions,” IEICE
Tech. Rep., EMCJ2015-91, Dec. 2015.
Masaru Nakayama, Takehiko Kobayashi (Tokyo Denki Univ.) [Nakayama 2013], “Simplified calculation method of wave
impedance for E-field strength estimation near half-wavelength dipole antennas,” IEICE Tech. Rep., EMCJ2013-96, Nov.
2013.
Kazutaka Ishida, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2013a], “An Analysis of non uniform
transmission line using CIP method,” IEICE Tech. Rep., EMCJ2013-108, Dec. 2013.
Ryugo Date, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2013b], “Estimation of the Noise Location on theTransmission Line by Measuring the Currents at the Both Ends,” IEICE Tech. Rep., EMCJ2013-110, Dec. 2013.
Jun Sonoda, Yuki Koseki (SNCT), Motoyuki Sato (Tohoku Univ.) [Sonoda 2014a], “Acceleration of FDTD Method Using
GPU Cluster and Application of Large-scale and Realistic Electromagnetic Simulation,” IEICE Tech. Rep., EMCJ2014-34,
Sep. 2014.
Jun Sonoda, Yuki Koseki (SNCT), Motoyuki Sato (Tohoku Univ.), Noriyasu Honma (Tohoku Electric Power) [Sonoda
2014b], “Fast Analysis for Lightning Electromagnetic Field on Large-scale and Realistic Numerical Terrain Model Using
MW-FDTD Method with GPU Cluster,” IEICE Tech. Rep., EMCJ2013-112, Jan. 2014.
Yuta Nanjyo, Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Prefectural Univ.) [Tobana 2014], “Study of voltage
source estimation of a line conductor using radiated electric field distribution,” IEICE Tech. Rep., EMCJ2013-114, Jan.
2014.

E8. EMC Measurement Technology & EMC Test Facilities
During the past three years, many researches on EMC measurement technology and EMC tests has continued as below.
The field includes; near field measurement and EM field probes; EM environment; antenna calibration; radiated emission
measurement; conducted emission measurement; and immunity test facilities, etc.
The frequency range of the conducted emission and immunity measurements is going to exceed 300 MHz, and at the sametime the frequency of the radiated emission standard covers less than 30 MHz range. It can be said that it is time to review
the traditional standard measurement methods.

References E8.
Fujio Amemiya (NTT AT) [Amemiya 2015], “Outline of the progress relating to establishment and revision of EMC
standards for Information Technology Equipment,” IEICE Tech. Rep., EMCJ2014-110, Mar. 2015.
Masanori Ishii, Satoru Kurokawa, Yozo Shimada (AIST) [Ishii 2013], “Improvement of Uncertainty of AC Magnetometer
Calibration at Power Supply Frequency,” IEICE Tech. Rep., EMCJ2013-102, Dec. 2013.
Satoshi Yagitani, Ryohei Kanaura, Ryohei Hayashi, Tomohiko Imachi, Mitsunori Ozaki (Kanazawa Univ.), Yoshiyuki
17Yoshimura, Hirokazu Sugiura (IRII) [Yagitani 2016], “Measurement of radio-frequency power and phase distributions on
absorber surface,” IEICE Tech. Rep., EMCJ2016-7, Apr. 2016.
Yasumitsu Miyazaki, Koichi Takahashi (Aichi Univ. of Tech.), Nobuo Goto (Univ. of Tokushima) [Miyazaki 2013],“Radiation and Electromagnetic Interference Characteristics in Tilted Microstrip Lines,” IEICE Tech. Rep., EMCJ2013-109,
Dec. 2013.
Satoshi Kazama, Hiroyasu Ikeda (JINOSH) [Kazama 2015], “Estimation of Electromagnetic Emission Sources by measuring
Phase of Adjacent Electromagnetic Field,” IEICE Tech. Rep., EMCJ2014-99, Jan. 2015.
Takehiro Morioka, Satoru Kurokawa (AIST), Jun Ichijou, Yoshikazu Toba (SEIKOH GIKEN) [Morioka 2016], “A study on
system characterization of an optical E-field probe,” IEICE Tech. Rep., EMCJ2016-38, June 2016.
Kentaro Nishi, Alfred Kik, Yukihisa Suzuki (Tokyo Metropolitan Univ.), Kanako Wake (NICT) [Suzuki 2014], “APreliminary Study on Optical Magnetic FIeld Sensor with Faraday Effect for the Magnetic Field Measurement in theIntermediate Frequency Band,” IEICE Tech. Rep., EMCJ2014-62, Oct. 2014.
Sung-Mao Wu, Li-Wen Lai, Jia-Yu Liu, Bang-Cheng Chiu, Mong-Hua Tu (NUK), Cheng-Chang Chen, Ming-Shan Lin(BSMI) [Wu 2016], “Near-field to Far-field Transformation using Non-contacting Near-field Measurement with Kirchhoff
Surface Integral Representation in the Frequency Domain,” IEICE Tech. Rep., EMCJ2016-31, June 2016.
Zixuan Huang (UEC/UESTC), Yoshio Kami, Fengchao Xiao (UEC) [Xiao 2015], “A Surrogate Model Based Algorithm for
Near-Field Reconstruction,” IEICE Tech. Rep., EMCJ2015-37, July 2015.
Yojiro Shigeta, Noriyuki Sato, Kaoru Arai, Masahiro Yamaguchi (Tohoku Univ.), Singo Kageyama (TDC) [Yamaguchi2014], “Development of High Sensitivity On-chip Active Magnetic Field Probe for IC-chip level RF EM Noise
Measurement,” IEICE Tech. Rep., EMCJ2014-3, Apr. 2014.
Kaoru Gotoh, Ifong Wu, Shinobu Ishigami, Yasushi Matsumoto (NICT) [Gotoh 2014], “Noise source separation ofelectromagnetic emission from plural LED bulbs,” IEICE Tech. Rep., EMCJ2013-126, Jan. 2014.
Hsi-Tseng Chou (National Taiwan Univ.), Dun-Yuan Cheng (Yuan Ze Univ.) [Chou 2016], “Experimental Calibration ofRadiation Pattern Distortion from Phased Array Antennas due to Implementation Errors,” IEICE Tech. Rep., EMCJ2016-39,
June 2016.
Satoru Kurokawa, Masanobu Hirose, Michitaka Ameya (AIST) [Kurokawa 2014], “Far Field Free Space Antenna Factor
Calibration Method for Bilog antenna,” IEICE Tech. Rep., EMCJ2014-70, Nov. 2014.
Takehiro Morioka (AIST), Kazuhiro Hirasawa (Univ. of Tsukuba) [Morioka 2014], “Uncertainty of the dipole antenna factor
at an arbitrary height above a ground plane,” IEICE Tech. Rep., EMCJ2014-71, Nov. 2014.
Ryuichi Nakashima, Eisuke Nishiyama, Ichihiko Toyoda (Saga Univ.) [Toyoda 2014], “Polarization Angle Dependency ofMulti-Polarization Rectenna,” IEICE Tech. Rep., EMCJ2013-115, Jan. 2014.
Katsumi Fujii, Kanako Wake (NICT), Masanori Ishii (AIST) [Fujii 2015], “Development on a Standard Magnetic Field
Generator in the Frequency Range below 30 MHz,” IEICE Tech. Rep., EMCJ2015-13, May 2015.
Masato Kawabata, Yasuhiro Ishida (Fukuoka Industrial Technology Center), Nobuo Kuwabara (Kyushu Inst. of Tech.)[Kawabata 2014], “A Study on Equivalent Radiation Source Modeling of Electronic Equipment for Far Field Estimation,”18

IEICE Tech. Rep., EMCJ2013-131, Jan. 2014.
Hiroshi Kurihara, Masataka Midori (TDK) [Kurihara 2015], “Estimation of 3 and 10 m Receiving Voltage by Near-far
Transformation with Image Principle,” IEICE Tech. Rep., EMCJ2015-46, July 2015.
Masataka Midori, Yuki Naitou, Hiroshi Kurihara (TDK), Atsuhiro Nishikata (Tokyo Tech), Katsumi Fujii, Takashi Shinozuka(NICT) [Midori 2015], “Estimation of 3 m Magnetic-field Strength by Loop Antenna System below 30 MHz,” IEICE Tech.
Rep., EMCJ2015-45, July 2015.
Takehiro Morioka (AIST) [Morioka 2015], “Site attenuation measurements using dipole antennas without a balun,” IEICE
Tech. Rep., EMCJ2015-56, Sep. 2015.
Yuki Naito, Masataka Midori, Hiroshi Kurihara (TDK Co.Ltd), Atsuhiro Nishikata (Tokyo Tech), Katsumi Fujii, Takashi
Shinozuka (NICT) [Naito 2015], “Validation Factor with Moment Method and Neumann's Formula by Large Loop Antenna
System,” IEICE Tech. Rep., EMCJ2015-44, July 2015.
Kouji Shibata, Takahiro Kaneko (Hachinohe Inst. of Tech.) [Shibata 2015], “Fundamental Study on Simplification of an
Estimate Work by Comparing with Reference Material on Measurement of Complex Permittivity for Liquids via the Openended Cut-off Waveguide Reflection Method,” IEICE Tech. Rep., EMCJ2015-47, July 2015.
Masaki Nagasawa, Ryosuke Suga (Aoyama Gakuin Univ.), Takenori Yasuzumi, Yukihisa Hasegawa (TOSHIBA), Tomoki
Uwano, Osamu Hashimoto (Aoyama Gakuin Univ.) [Suga 2015], “A Sidelobe Suppression of Directional Printed Dipole
Antenna for Radiation EMI Measurement,” IEICE Tech. Rep., EMCJ2014-98, Jan. 2015.
Akira Sugiura (Kyoto Univ.), Fumito Kubota (TELEC), Takashi Shinozuka, Katsumi Fujii (NICT), Osami Wada (Kyoto
Univ.) [Sugiura 2015], “Numerical evaluation of the magnetic fields leaking from a pair of EV loops,” IEICE Tech. Rep.,
EMCJ2015-12, May 2015.
Hiroshi Echigo (Tohoku Gakuin Univ.), Kazuo Aizawa [Echigo 2014], “Induced Current Distributions to form Designed
Electric Fields for Suppression by Conductive Wire Arrays, - Conductive Wire Array Synthesis from Electric Fields after
Suppression -,” IEICE Tech. Rep., EMCJ2013-139, Mar. 2014.
Ryosue Tani (Aoyama Gakuin Univ./NICT), Ifong Wu, Shinobu Ishigami, Yasushi Matsumoto (NICT), Ryosuke Suga,
Osamu Hashimoto (Aoyama Gakuin Univ.) [Hashimoto 2015], “Characteristics evaluation of TEM-cell type conductednoise measuring apparatus Part1 -- An Evaluation of Voltage Division Factor --,” IEICE Tech. Rep., EMCJ2015-71, Oct.
2015.
Wataru Fujii, Shinichiro Yamamoto, Kenichi Hatakeyama, Tohru Iwai (Univ. of Hyogo), Takanori Tsutaoka (Hiroshima
Univ.) [Hatakeyama 2016], “Design Chart of BP Filter Using Hole Array Sheet,” IEICE Tech. Rep., EMCJ2016-56, Sep.
2016.
Shinobu Ishigami, Kaoru Gotoh, Ifong Wu, Yasushi Matsumoto (NICT) [Ishigami 2014], “Development of broadband
measurement system for conducted interference voltage by using TEM cell,” IEICE Tech. Rep., EMCJ2013-121, Jan. 2014.
Nobuo Kuwabara, Hiromu Okumura (Kyushu Inst. of Tech.), Yuichiro Okugawa, Kazuhiro Takaya, Yoshiharu Akiyama(NTT) [Kuwabara 2014], “Investigation of CDN with Transformer Used below 150 kHz,” IEICE Tech. Rep., EMCJ2013130, Jan. 2014.
19

Farhan Mahmood, Ken Okamoto, Shinji Goto, Kazuhiro Takaya (NTT) [Mahmood 2014], “Evaluation method for transient
disturbance from lighting equipment with considering the impedance of commercial power network,” IEICE Tech. Rep.,
EMCJ2014-67, Nov. 2014.
Farhan Mahmood, Ken Okamoto, Hidetoshi Tatemichi, Kazuhiro Takaya (NTT) [Mahmood 2016], “Artificial Mains
Network for Conducted Disturbance from 2 kHz,” IEICE Tech. Rep., EMCJ2015-121, Jan. 2016.
Tohlu Matsushima (Kyoto Univ.), Kazuhiro Takaya, Yuichiro Okugawa, Ken Okamoto (NTT), Akira Sugiura, Osami Wada
(Kyoto Univ.) [Matsushima 2016], “LCL Measurement Method Based on Equivalent Circuit Modeling,” IEICE Tech. Rep.,
EMCJ2016-12, May 2016.
Atsushi Nagao, Farhan Zaheed Mahamood, Yuichiro Okugawa, Shin Kanno, Kazuhiro Takaya (NTT) [Nagao 2014],“Evaluation of voltage between signal line and ground line generated by near-EM disturbance,” IEICE Tech. Rep.,
EMCJ2014-2, Apr. 2014.
Shinji Ohono, Toshikazu Sekine, Yasuhiro Takahashi (Gifu Univ.) [Sekine 2015], “Multi-port S parameter estimation
through the connection circuit with unnecessary leakage coupling between the ports,” IEICE Tech. Rep., EMCJ2015-54,
Sep. 2015.
Takashi Shinozuka, Katsumi Fujii (NICT), Akira Sugiura, Osami Wada (Kyoto Univ.) [Shinozuka 2014a], “Characterizationof a V-type Artificial Mains Network in Terms of the Scattering Parameters,” IEICE Tech. Rep., EMCJ2014-68, Nov. 2014.
Takashi Shinozuka, Katsumi Fujii (NICT), Akira Sugiura, Osami Wada (Kyoto Univ.) [Shinozuka 2014b], “Influence of an
AC-SMA adapter on measurements of the AMN impedance,” IEICE Tech. Rep., EMCJ2014-69, Nov. 2014.
Takashi Shinozuka, Katsumi Fujii (NICT), Akira Sugiura, Osami Wada (Kyoto Univ.) [Shinozuka 2015], “Influence of an
AC-coaxial adapter on measurements of the AMN impedance,” IEICE Tech. Rep., EMCJ2015-11, May 2015.
Akira Sugiura (Kyoto Univ.), Norihito Hirasawa (NTT East), Kazuhiro Takaya (NTT), Fujio Amemiya (NTT AT), Osami
Wada (Kyoto Univ.) [Sugiura 2015], “Theoretical Analysis of the Characteristics of the Shunt-Type AAN,” IEICE Tech.
Rep., EMCJ2015-55, Sep. 2015.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2014], “Analysis of coupling between two slotlines placed parallely in ground of PCB,” IEICE Tech. Rep., EMCJ2014-31, Sep. 2014.
Teruo Tobana, Shuhei Nomura, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2015], “Fundamental study fortime domain measurement of transmission characteristics of two conducting wires,” IEICE Tech. Rep., EMCJ2015-4, Apr.
2015.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akit Pref. Univ.) [Tobana 2016a], “Analysis of crosstalk between microstrip
line and ground slot applying radiation power,” IEICE Tech. Rep., EMCJ2016-10, May 2016.
Teruo Tobana, Takayuki Sasamori, Yoji Isota (Akita Pref. Univ.) [Tobana 2016b], “Analysis of crosstalk between microstrip
lines placed on both sides of a ground slot,” IEICE Tech. Rep., EMCJ2016-60, Oct. 2016.
Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo), Tohru Iwai (Kawasaki Techno), Takanori Tsutaoka(Hiroshima Univ.) [Yamamoto 2015], “Band-pass and High-pass Filters by Multilayered Structures Consisting of
Periodically Perforated Metal Plate and Dielectric Layer,” IEICE Tech. Rep., EMCJ2014-92, Jan. 2015.
20

Katsushige Harima, Shinobu Ishigami (NICT) [Harima 2015], “Evaluation of E-Fields Generating Antennas for Use in Close
Proximity Radiated Immunity Testing,” IEICE Tech. Rep., EMCJ2015-96, Dec. 2015.
Takehiko Kobayashi (Tokyo Denki Uni.) [Kobayashi 2013], “Intentional EMI (IEMI) and its Countermeasures,” IEICE Tech.
Rep., EMCJ2013-99, Nov. 2013.
Naomichi Nakamaura, Yuichiro Okugawa, Yoshiharu hiroshima, Kazuhiro Takaya (NTT) [Nakamura 2016a], “Study on test
signal for radiated immunity test in close proximity to equipment,” IEICE Tech. Rep., EMCJ2015-117, Jan. 2016.
Naomichi Nakamura, Yuichiro Okugawa, Yoshiharu Hiroshima, Kazuhiro Takaya (NTT) [Nakamura 2016b], “A Study on
Electric Field Strength at the surface of EUT for radiated immunity test in close proximity,” IEICE Tech. Rep., EMCJ201611, May 2016.
Yoshitsugu Okuda (KEC), Yasushi Asaji (Murata), Chiaki Asaba (ADVANTEST), Mikio Okumura (OMRON), Hiro Shida(Tokin), Hisashi Ninomiya (Roland), Kenji Masaoka (KEC), Yoshihide Mimura (Intertek), Osami Wada (Kyodai) [Okuda
2015], “Results of EMC round robin test on emission and immunity test -- (1) Radiated and conducted emission tests --,”IEICE Tech. Rep., EMCJ2015-57, Sep. 2015.
Yoshitsugu Okuda, Masahiro Inoue (KEC), Hiro Shida (Tokin), Hisashi Ninomiya (Roland), Kenji Masaoka (KEC), Minoru
Yamanaka (UL), Osami Wada (Kyo Dai) [Okuda 2016], “Results of EMC round robin test on emission and immunity test,”
IEICE Tech. Rep., EMCJ2016-61, Oct. 2016.
Kazuhiro Takaya, Naomichi Nakamura, Yuichiro Okugawa, Yoshiharu Hiroshima (NTT) [Takaya 2016], “Study on test
distance between EUT and antenna for radiated immunity test in close proximity to equipment,” IEICE Tech. Rep.,
EMCJ2015-116, Jan. 2016.
Satoshi Kazama, Hiroyasu Ikeda (JNIOSH), Masayuki Murakami (Tokyo metropolitan industrial technology research
institute) [Kazama 2013], “Verifying robot safety function under Radiated, radio-frequency, electromagnetic field immunity,”
IEICE Tech. Rep., EMCJ2013-105, Dec. 2013.

E9. EM Wave Absorbing and Shielding Materials’ Design
Many research results on EM wave absorber and EM material properties have been published. In addition to new methods
for material constant measurement and proposal of analytical methods, there are also many proposals for functional materials
such as new wave absorbers, shielding materials, surfaces with frequency selectivity.
Yamaguchi et al. have studied materials exhibiting large magnetic permeability over a wide frequency range and propose
a method of reducing noise by putting them to the surface of IC chips and the vicinity of circuit boards.

References E9.
Takahiro Aoyagi (Tokyo Inst. of Tech.), Hiroshi Kurihara, Koji Takizawa, Yoshihito Hirai (TDK) [Aoyagi 2014], “Numericalsimulations on reflection coefficients of pyramidal wave absorber by incident azimuth directions,” IEICE Tech. Rep.,
EMCJ2014-5, Apr. 2014.
Thourn Kosorl, Takahiro Aoyagi, Jun-ichi Takada (Tokyo Tech) [Aoyagi 2015a], “Characterization of Absorbing Material
Using Multiple Poles Debye Model and Its Application for Wideband Simulation in FDTD Method,” IEICE Tech. Rep.,
21

EMCJ2015-41, July 2015.
Kosorl Thourn, Takahiro Aoyagi, Jun-ichi Takada (Tokyo Tech) [Aoyagi 2015b], “Numerical Simulation of EM Wave
Propagation on Human Body with Consideration of the Effect of Wave Absorbers Using FDTD Method,” IEICE Tech. Rep.,
EMCJ2015-82, Nov. 2015.
Atsushi Arai, Minoru Sato, Takashi Harada, Junichi Suzuki, Kazuya Sasaki (TEE) [Arai 2016], “Calculation accuracy ofoblique incidence phase characteristics by multi-layer model for composite absorber,” IEICE Tech. Rep., EMCJ2016-6, Apr.
2016.
Naoki Kosugi, Ryosuke Suga (Aoyama Gakuin Univ.), Yoshitoshi Maeda, Makoto Uno (WICERA), Hiroaki Mizuno(Fujimi), Osamu Hashimoto (Aoyama Gakuin Univ.) [Hashimoto 2015a], “Basic Study on Alumina Sprayed Wave Absorberin Millimeter-Wave Band,” IEICE Tech. Rep., EMCJ2014-103, Mar. 2015.
Yuya Kawasaki, Ryosuke Suga (Aoyama Gakuin Univ.), Yoshitoshi Maeda, Makoto Uno (WICERA), Osamu Hashimoto(Aoyama Gakuin Univ.) [Hashimoto 2015b], “An Analytical Study on Improvement of Estimation Accuracy of Cap-type
Absorber for Near-field,” IEICE Tech. Rep., EMCJ2014-104, Mar. 2015.
Akira Hamano, Shinichiro Yamamoto (Univ. of Hyogo), Tohru Iwai (Kawasaki Techno), Kenichi Hatakeyama (Univ. of
Hyogo) [Hatakeyama 2015c], “Transmission and Reflection of Periodically Perforated Metal Plates -- Study in Frequency
Range around Wavelength equal to Spacing --,” IEICE Tech. Rep., EMCJ2015-42, July 2015.
Kohei Tsuyoshi, Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo) [Hatakeyama 2015], “Oblique Incidence
Reflection Characteristics of Ferrite/Rubber Mixture Laminating Metal Wire Array Sheets,” IEICE Tech. Rep., EMCJ20158, May 2015.
Ryosuke Ito, Hiroki Anzai (TNCT) [Ito 2014], “Study of Fin Electromagnetic Wave Absorber for Adjacent ETC Lane,”
IEICE Tech. Rep., EMCJ2013-132, Mar. 2014.
Osamu Miura, Hiroki Anzai (Tsuruoka-NCT) [Miura 2014], “An Analysis of Complex Permittivity of Electromagnetic Wave
Absorber Using Transparent Liquid,” IEICE Tech. Rep., EMCJ2014-38, Sep. 2014.
Hiroshi Yoshiizumi, Ryosuke Suga (Aoyama Gakuin Univ.), Kiyomichi Araki (Tokyo Tech.), Osamu Hashimoto (Aoyama
Gakuin Univ.) [Suga 2016], “A Study on Two-layered Patch Array Wave Absorber and Its Operation Frequency Design,”
IEICE Tech. Rep., EMCJ2016-83, Oct. 2016.
Hideki Yoshida (Honda R&D), Masanori Ishii (AIST), Katsumi Fujii (NICT), Yasuyuki Danjo (Honda R&D) [Yoshida 2015],“A Study on the influence of the absorber structure to the Characteristics of Semi-anechoic Chambers below 30 MHz,”IEICE Tech. Rep., EMCJ2014-102, Mar. 2015.
Takayuki Yoshida (Yamagata Univ,), Toshihiko Kaneiwa (Asahi Organic Chemicals Industry), Shinichiro Yamamoto (Univ.
of Hyogo), Hiroshi Iizuka (Yamagata Univ,) [Yoshida 2016], “Development of Electromagnetic Wave Absorber byAgricultural by-products,” IEICE Tech. Rep., EMCJ2015-129, Mar. 2016.
Hiroshi Echigo (Tohoku Gakuin Univ.), Kazuo Aizawa [Echigo 2013], “Suppression Effectiveness by the Arrays composedof Dielectric Thin Wires with Conductivities,” IEICE Tech. Rep., EMCJ2013-93, Nov. 2013.
Hiroshi Echigo (Tohoku Gakuin Univ.), Kazuo Aizawa [Echigo 2014], “Discussion on Suppression Effectiveness by Arrays
22composed of Dielectric Thin Wires with Conductivity,” IEICE Tech. Rep., EMCJ2013-120, Jan. 2014.
Yuki Naito, Soichiro Yahagi, Ryosuke Suga, Osamu Hashimoto (Aoyama Gakuin Univ.), Shin-ichiro Matsuzawa, Koji
Tsukada, Hiroya Tanaka, Yoshiyuki Hattori (Toyota Central R&D Labs., Inc.) [Hashimoto 2014], “A Study on Analysis
Model of Metal Chassis for Evaluation of Magnetic Shield Characteristic in Low-frequency Band,” IEICE Tech. Rep.,
EMCJ2013-123, Jan. 2014.
Soichiro Yahagi, Ryosuke Suga, Tomoki Uwano, Osamu Hashimoto (Aoyama Gakuin Univ.) [Hashimoto 2015],“Experimental Study on Magnetic Leakage from Junctions of High Shielding Materials,” IEICE Tech. Rep., EMCJ2015-94,
Dec. 2015.
Kenta Suezaki, Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo) [Hatakeyama 2013], “EM Shielding
Characteristics in Far Field Region of Perforated Metal Plates,” IEICE Tech. Rep., EMCJ2013-104, Dec. 2013.
Hiromitsu Arikawa, Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo) [Hatakeyama 2014], “EM Wave
Shielding Characteristics of Metal Plates with Periodically Circular Holes,” IEICE Tech. Rep., EMCJ2014-25, July 2014.
Akira Hamano, Shinichiro Yamamoto (Univ. of Hyogo), Tohru Iwai (Kawasaki Techno), Kenichi Hatakeyama (Univ. of
Hyogo) [Hatakeyama 2016a], “Experimental Study of Shielding Effectiveness of Metal Plates Perforated Periodically and
Non-Periodically with Circular Holes,” IEICE Tech. Rep., EMCJ2015-120, Jan. 2016.
Kohei Tsuyoshi, Shinichiro Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo), Takanori Tsutaoka (Hiroshima Univ.)[Hatakeyama 2016b], “Study on Conductive-Strip Grid-Pattern Characteristics and their Application as Absorber Material,”
IEICE Tech. Rep., EMCJ2016-21, June 2016.
Kennichi Hatakeyama (University of Hyogo) [Hatakeyama 2016c], “Recent Topics Related to EM Wave
Reflection/Transmission Control Device Using Artificially Engineered Material,” IEICE Tech. Rep., EMCJ2016-59, Sep.
2016.
Ikuya Minematsu (KEC Electronic Industry Development Center), Seiichi Murooka (Japan Shielded Enclosures), Shinichiro
Yamamoto, Kenichi Hatakeyama (Univ. of Hyogo) [Minematsu 2013], “Examination of the shield effectiveness evaluationequipment in frequency range from 1GHz up to 6GHz that applied the coaxial SE method and coaxial flange SE method,”
IEICE Tech. Rep., EMCJ2013-103, Dec. 2013.
Sho Muroga, Fan Peng, Satoshi Tanaka (Tohoku Univ.), Tomomitsu Kitamura (Renesas SP Drivers), Hiroaki Matsui(Renesas electronics), Naoya Azuma, Shunsuke Shimazaki, Junpei Kosaka, Makoto Nagata (Kobe Univ.), Masahiro
Yamaguchi (Tohoku Univ.) [Muroga 2014], “Analysis of Conductive and Inductive Noise Couplings on TEG Chip with
Magnetic Thin Film,” IEICE Tech. Rep., EMCJ2014-16, June 2014.
Sho Muroga (National Institute of Technology, Toyota College), Jiang Fu, Masahiro Yamaguchi (Tohoku University),
Tomoya Tanaka, Chie Okamura, Lumina Obi, Kazufumi Kato (Asahi Kasei Co.) [Muroga 2016], “Shielding Effectivenessof Meltblown Non-Woven Fabric Type Non-Magnetic Noise Suppressor,” IEE-J Tech. Rep., EMC-16-18 June 2016.
Junpei Kousaka, Shunsuke Shimazaki, Noriyuki Miura (Kobe Univ.), Sho Muroga, Satoshi Tanaka, Masahiro Yamaguchi(Tohoku Univ.), Makoto Nagata (Kobe Univ.) [Nagata 2015], “Effects of On-Board Noise Remedy at IC Chip Level Noise
Reduction -- A Case Study in LTE-Class IC Chip --,” IEICE Tech. Rep., EMCJ2014-108, Mar. 2015.
Katsuya Nomura, Naoto Kikuchi, Yoshitoshi Watanabe, Shuntaro Inoue, Yoshiyuki Hattori (TCRDL) [Nomura 2015],
23

“SPICE Model for Common Mode Choke Including Complex Permeability,” IEICE Tech. Rep., EMCJ2015-38, July 2015.
Yusuke Ohdaira, Koki Harada, Shigeyoshi Yoshida (NEC TOKIN), Toshiro Sato (Shinshu Univ.) [Ohdaira 2016],“Broadband Characteristics of the Quasi-distributed Constant Line Filter with Multiple Magnetic Core,” IEICE Tech. Rep.,
EMCJ2016-82, Oct. 2016.
Kouji Shibata (Hachinohe Inst. of Tech.) [Shibata 2015], “A Study on Broadband Measurement of Complex Permittivity for
Liquids Using the Open-ended Coaxial Line Reflection Method,” IEICE Tech. Rep., EMCJ2015-28, June 2015.
Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.), Koichi Kondo, Shigeyoshi Yoshida (NEC TOKIN) [Toyota 2014],“Fabrication and Evaluation of Lossy Resonator Filter Consisting of Open Stub Covered with Ferrite Thin Film,” IEICE
Tech. Rep., EMCJ2014-27, July 2014.
Sho Muroga, Yuki Asazuma, Masahiro Yamaguchi (Tohoku Univ.), Tomoya Tanaka, Chie Okamura, Shinichi Okajima,
Kazufumi Kato (Asahi Kasei Fibers Corp.) [Yamaguchi 2014], “Conductive Noise Suppression in the MSL using the MetalCoated Non-Woven Fabric with High Sheet Resistance,” IEICE Tech. Rep., EMCJ2013-133, Mar. 2014.
Masahiro Yamaguchi, Jingyan Ma, Hanae Aoki (Tohoku Univ.) [Yamaguchi 2015a], “Analysis of shielding effectiveness ofmagnetic thin-film noise suppressor,” IEE-J Tech. Rep., EMC-15-13 June 2015.
Jingyan Ma, Hanae Aoki, Masahiro Yamaguchi (Tohoku Uni.) [Yamaguchi 2015b], “Analysis of IC chip level
electromagnetic noise suppression mechanism of magnetic film,” IEICE Tech. Rep., EMCJ2015-40, July 2015.
Jiang Fu, Masahiro Yamaguchi (Tohoku Univ.), Sho Muroga (toyota-ct), Tomoya Tanaka, Chie Okamura, Lumina Obi,
Kazufumi Kato (Asahi Kasei) [Yamaguchi 2016a], “Shielding Effectiveness of Meltblown Non-Woven Thin Fabric type
Noise Suppressor,” IEICE Tech. Rep., EMCJ2016-58, Sep. 2016.
Jingyan Ma, Hanae Aoki, Masahiro Yamaguchi (Tohoku Univ.) [Yamaguchi 2016b], “Electromagnetic analysis ofpermittivity effect on magnetic near field suppression of Co-Zr-Nb film,” IEICE Tech. Rep., EMCJ2016-81, Oct. 2016.
Shinichiro Yamamoto, Makoto Usuki, Kenichi Hatakeyama (Univ. of Hyogo), Tohru Iwai (Kawasaki Techno) [Yamamoto
2014a], “Numerical Study of Permittivity for Metal Wire Array Sheets,” IEICE Tech. Rep., EMCJ2013-124, Jan. 2014.
Shinichiro Yamamoto, Kenta Suezaki, Kenichi Hatakeyama (Univ. of Hyogo) [Yamamoto 2014b], “Near Field Magnetic
Field Shielding Effectiveness of Periodically Perforated Metal Plates,” IEICE Tech. Rep., EMCJ2013-125, Jan. 2014.
Satoshi Yoneda, Yasuhiro Shiraki, Yuichi Sasaki, Naoto Oka, Hideyuki Oh-hashi (Mitsubishi Electric) [Yoneda 2014], “AGHz-band Electromagnetic Shielding Structure with Built-in Arrayed SIW Resonators,” IEICE Tech. Rep., EMCJ2013-122,
Jan. 2014.

E10. Electrostatic Discharge (ESD) Measurement and Simulation
Fujiwara, Wang, Ishida et al. have continuously investigated ESD simulation and measurement methods. Recently they
applied it to test of wearable equipment such as artificial arms, and proposed immunity test arrangement.
The FDTD method is widely used for ESD simulation. Asai et al. combined the FDTD method and the circuit simulation
method, LIM (latency insertion method), so that the analysis efficiency was improved by taking advantage of the circuit
analysis and electromagnetic field analysis.
24

Kawamata examined electromagnetic radiation mechanism by micro gap ESD experimentally and clarified the influenceof electrode surface condition.

References E10.
Tsuyoshi Takada, Tadatoshi Sekine, Hideki Asai (Shizuoka Univ.) [Asai 2014], “ESD Simulation by LIM/FDTD Hybrid
Method,” IEICE Tech. Rep., EMCJ2013-113, Jan. 2014.
Ryo Nakaya, Hidenawo Ando, Daisuke Anzai, Jianqing Wang, Osamu Fujiwara (NIT) [Fujiwara 2015a], “Statistical
Measurement of Electromagnetic Noise Characteristics of Indirect ESD in Wireless Frequency Bands and Evaluation of Its
Influence to Communication Performance,” IEICE Tech. Rep., EMCJ2015-35, July 2015.
Keisuke Sato, Daisuke Anzai, Jianqing Wang, Osamu Fujiwara (NIT) [Fujiwara 2015b], “Development of Pseudo
Myoelectric Signal Generator and ESD Test Evaluation for Artificial Arm,” IEICE Tech. Rep., EMCJ2015-36, July 2015.
Takeshi Ishida (Noiseken / UEC), Fengchao Xiao, Yoshio Kami, Osamu Fujiwara, Shuichi Nitta (UEC) [Ishida 2014], “A
Study of Electrostatic Discharge Immunity Testing for Wearable Equipment,” IEICE Tech. Rep., EMCJ2014-72, Nov. 2014.
Kenichro Abe, Ken Kawamata, Shigeki Minegishi (Tohoku Gakuin Univ.), Osamu Fujiwara (Nagoya Institute of Technology)[Kawamata 2015], “Experimental study on relationship between electrode approaching speed and variation in the amplitudeof electromagnetic radiation due to ESD,” IEE-J Tech. Rep., EMC-15-019 June 2015.
Kenichiro Abe, Ken Kawamata, Shigeki Minegishi (TGU), Osamu Fujiwara (NIT) [Kawamata 2016a], “Influence of Surface
Roughness of Electrode in EM Radiation Caused by Micro Gap ESD,” IEICE Tech. Rep., EMCJ2015-118, Jan. 2016.
Kenichiro Abe, Ken Kawamata, Shigeki Minegishi (Tohoku Gakuin University), Osamu Fujiwara (Nagoya Institute ofTechnology) [Kawamata 2016b], “A study on the relation between surface roughness of spherical electrode and amplitude ofelectromagnetic radiation due to ESD,” IEE-J Tech. Rep., EMC-16-30 June 2016.
Ryuta Koike, Ken Kawamata, Shinobu Ishigami, Shigeki Minegishi (Tohoku Gakuin University) [Minegishi 2016],“Measurement of current distribution on vertical coupling plane in the ESD immunity test,” IEE-J Tech. Rep., EMC-16-31
June 2016.
Yoshinori Taka (KNCT), Ken Kawamata (Tohoku Gakuin Univ.), Osamu Fujiwara (Nagoya Inst. of Tech.) [Taka 2014],“Development and accuracy verification of measurement system for spark length due to electrostatic discharge from ESDgenerator,” IEICE Tech. Rep., EMCJ2014-37, Sep. 2014.
Ji Cheng, Daisuke Anzai, Jianqing Wang (NIT), Ikuko Mori (SNCT), Osamu Fujiwara (NIT) [Wang 2013], “Study of IEC
ESD Testing for Small-Sized Control Board,” IEICE Tech. Rep., EMCJ2013-91, Nov. 2013.

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