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Following are abstracts of papers from previous EMC symposia,
related conferences, meetings and publications.
EMCABS COMMITTEE
Bob Hunter, Consultant
r.d.hunter@ieee.org
Sha Fei, EMC Research Section, Northern Jiatong
University, Beijing, China
emclab@center.njtu.edu.cn
Ferdy Mayer, L.E.A.D., Maisons, Alfort France
FerdyMayerLEADFrance@compuserve.com
Maria Sabrina Sarto, Department of Electrical Engineering,
University of Rome, Italy
sarto@elettrica.ing.uniroma1.it
“How Can I Get a Copy of an Abstracted
Article?”
Engineering college/university libraries, public libraries,
company or corporate libraries, National Technical Information
Services (NTIS), or the Defense Technical Information Center
(DTIC) are all possible sources for copies of abstracted
articles or papers. If the library you visit does not own
the source document, the librarian can probably request
the material or a copy from another library through interlibrary
loan, or for a small fee, you can order it from NTIS or
DTIC. Recently it became clear that EMCABs were more timely
than publications which were being listed in data files.
Therefore, additional information will be included, when
available, to assist in obtaining desired articles or papers.
Examples are: IEEE, SAE, ISBN, and Library of Congress identification
numbers.
As the EMC Society becomes more international, we will be
adding additional worldwide abstractors who will be reviewing
articles and papers in many languages. We will continue
to set up these informal cooperation networks to assist
members in getting the information or contacting the author(s).
We are particularly interested in symposium proceedings
which have not been available for review in the past. Thank
you for any assistance you can give to expand the EMCS knowledge
base. EMC
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EMCABS: 01-8-2004
THREE-CONDUCTOR MODELING OF STRIPLINES AT VIA DISCONTINUITIES
+A. Ege Engin, ++Werner John, ++Grit Sommer and +++Wolfgang Mathis
+ FhG IZM/University of Paderborn – Berlin/Paderborn –
Germany
++ Fraunhofer Institute for Reliability and Microintegration –
Department Advanced System Engineering Gustav – Meyer –
Allee 25 – D – 13355 Berlin – Germany
ege.engin@izm.fraunhofer.de
+++ Institute of Electromagnetic Theory and Microwave Technique
– University of Hannover Appelstrasse 9A – D –
30167 Hannover – Germany
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.61-64
Abstract: In this paper, a model for vias is presented, based
on a recently developed stripline model. The via model has been
validated based on measurements and field simulations. The influence
of inhomogeneous media in the modeling of striplines has been
investigated. This via model together with a generic 3-terminal
driver model can be immediately implemented in SPICE simulators,
much easier than existing via models, such that various factors
affecting the return path discontinuity (RPD) caused by vias can
be analyzed conveniently.
Index terms: Return path discontinuity, stripline model, via modeling,
non-ideal power distribution, 3-terminal driver model.
EMCABS: 02-8-2004
Suppression of microwave oven interference in wlan systems using
adaptive filters
Masanobu Nakatsuka, Yasushi Matsumoto, Katsumi Fujii and Akira
Sugiura
RIEC, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577,
Japan
ymatsu@riec.tohoku.ac.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.101-104
Abstract: Since WLAN (Wireless LAN: IEEE802.11b) systems shares
the 2.4 GHz frequency band with microwave ovens, interference
caused by the radiated noise from the ovens is a serious problem.
This paper proposes the use of adaptive filters to suppress the
microwave oven interference in DS-SS (Direct Sequence Spread Spectrum)
WLAN links. This method is based on the fact that oven noise can
be regarded as CW-like interference in a short duration. In contrast
to the conventional suppression techniques for oven noise, this
method can be implemented without any change of the specifications
of currently used WLAN systems. The results of numerical simulations
clearly demonstrate the effectiveness of the method for improving
the bit error rate of the WLAN links interfered by oven noise.
Index terms: Adaptive filter, WLAN, microwave oven, ISM band,
spread spectrum, EMI.
EMCABS: 03-8-2004
analysis of crosstalk between multiconductor transmission lines
in arbitrary direCtions using a circuit–concept approach
Sang Wook Park, Jae Cheol Ju and Dong Chul Park
Chungnam National University Department of Radio Sciences and
Engineering Daejeon, Korea
swpark@cnu.ac.kr,
jcju@cun.ac.kr, dcpark@cnu.ac.kr
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.277-280
Abstract: In this paper, a circuit-concept approach under a weak-coupling
assumption is expanded for the analysis of crosstalk between multiconductor
transmission lines (MTLs) in arbitrary directions on a gigabit
digital printed circuit board (PCB). Under the weak-coupling assumption,
the calculation of crosstalk requires only self-terms of per-unit-length
parameters such as capacitance and inductance. The effect of the
mutual-terms of the parameters can be estimated by considering
external electromagnetic fields coupling between MTLs. It is shown
that the crosstalk calculated by the expanded circuit-concept
approach agrees fairly well with the result obtained by solving
MTL equations in which the calculation of per-unit-length parameter
matrices is essentially required.
Index terms: Circuit-concept approach, crosstalk, multiconductor
transmission lines, PCB
EMCABS: 04-8-2004
study on effectivEness of wave absorbers for 5.8 ghz dsrc applications
on express highwayS
+Ramesh K. Pokhrel, ++Makoto Toyota and +Osamu Hashimoto
+ Aoyama Gakuin University
++ Japan Highway Public Corporation
pokharel@ee.aoyama.ac.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.325-328
Abstract: Recently, electromagnetic (EM) wave absorbers had been
proposed to improve the EM environment of Dedicated Short-Range
Communication (DSRC) systems for Electronic Toll Collection (ETC)
applications. In this paper, the ray-tracing method, which has
been widely used to study the radio wave propagations on terrain
profiles, is employed to study the EM environment when wave absorbers
are installed on the sidewalls and the pavement of an express
highway. The validity of the employed model is discussed by the
comparison with the actual measurement on an outdoor experiment.
The analysis shows that the possible undesired communication between
a running vehicle and DSRC antenna is improved by increasing EM
wave-absorption capabilities of pavement and sidewalls.
Index terms: Communication zone, DSRC, EM environment, wave absorber,
ray-tracing method.
EMCABS: 05-8-2004
Rf iNtegrated noise suppressor on cpw using ferromagnetic resonance
and eddy current loss
+Ki Hyeon Kim, ++Shigehiro Ohnuma and +Masahiro Yamaguchi
+ Dept. of Electrical and Communication Engineering, Tohoku University,
Sendai 980-8579, Japan
++ The Research Institute for Electric and Magnetic Materials,
2-1-1, Sendai, Japan 982-0807
kee@ecei.tohoku.ac.jp,
s.ohnuma@denjiken.ne.jp,
yamaguchi@ ecei.tohoku.ac.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.337-340
Abstract: The RF integrated noise suppressor is demonstrated by
integration of soft magnetic films on a coplanar transmission
line. The vertical structure is composed of the magnetic film
(2 mm x 15 mm x 1, 2 mm) /2 mm-thick polyimide/15.2 mm long and
3 mm- thick Cu transmission line/seed layer (Ti/Cu) /1 mm-thick
glass substrate. The coplanar transmission line was prepared by
electroplated Cu with 50 W- characteristic impedance. The width
of the signal line is 50 mm. The magnetic films were deposited
by RF magnetron sputtering. We used CoPdAlO (4pMs=8.3 kG, r= 500
mWcm, FMR frequency fres=2.8 GHz) and CoNbZr (4pMs=10 kG, r=120
mWcm, fres=0.8 GHz) magnetic films. The measured transmission
parameter (S21) of the integrated noise suppressor was compared
with those of the non-integrated noise suppressor. The magnitude
of signal attenuation due to the ferromagnetic resonance and eddy
current loss of magnetic films at resonance point was greatly
increased by the integration: from -4 dB to -30 dB for the 1 mm-thick
CoNbZr film, and from -15 dB to –57 dB for the 2 mm-thick
CoPdAlO film, respectively.
Index terms: Ferromagnetic resonance, noise suppression, coplanar
transmission line.
EMCABS: 06-8-2004
Estimation of short range multiple coherent source locations by
using music algorithm
+Takashi Kato, +, ++Kazumasa Taira, ++Kunio Sawaya and +Risaburo
Sato
+ Sendai EMC Research Center, Telecommunication Advancement Organization
of Japan
++ Department of Electrical Communications, School of Engineering,
Tohoku University
kato@emc-rc.tao.go.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.381-384
Abstract: An estimation method of source location of undesired
electromagnetic wave from electronic devices by using the MUSIC
algorithm is proposed. The MUSIC algorithm can estimate the direction
of arrival accurately, however, the estimation error is large
in the case of short range multiple coherent sources. In order
to overcome this problem, a method to improve the estimation accuracy
is presented. Experimental results show that the proposed method
can reduce the maximum estimation error from 7 cm of the conventional
method to 2 cm.
Index terms: MUSIC algorithm, estimation of source location, direction
of arrival, multiple coherent sources.
EMCABS: 07-8-2004
measuring the impact of in–vehicle–generated emi on
vhf radio reception in an unshielded environment
Kent Chamberlin and Maxim Khankin
Dept. of Electrical & Computer Engineering, University of
New Hampshire
Kent.Chamberlin@unh.edu
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.409-412
Abstract: Radiation generated by electronic equipment inside a
vehicle can interfere with radio reception even though that equipment
is in compliance with FCC standards. The result of that interference
is an undesired reduction in radio coverage at frequencies where
the interference exists. The objective of this paper is to present
an approach for measuring electromagnetic interference (EMI) generated
by in-vehicle electronic equipment without requiring the measurements
to be made inside a shielded anechoic chamber. Such measurements
are straightforward in a shielded chamber since interfering signals
from external radiation sources does not confound the measurement
process. The contribution of the work presented here is to define
a method for measuring EMI when external radiation is present.
The basic approach is to identify regions in the spectrum where
externally generated signals exist and then to bypass those regions
when measuring interference from in-vehicle equipment. Because
external interference can come from unlicensed as well as licensed
sources, using the FCC database of licensed radiation sources
to identify the regions to bypass will not achieve the desired
goal. Rather, an analysis of the received spectrum is used to
assess the presence of signals. Details regarding measurement
equipment, procedures, accuracy and repeatability are given.
Index terms: EMI measurements, in-vehicle, radio coverage, FCC-compliant,
external EMI.
EMCABS: 08-8-2003
Characterization of fields radiated from structures excited by
ESD using passive sensors
Graziano Cerri, Roberto De Leo, Stefano Pennesi, Valter Mariani
Primiani and Paola Russo
Istituto di Elettromagnetisimo e Bioingegneria, Universita Politecnica
delle Marche, Italy
graziano.cerri@univpm.it
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.429-432
Abstract: A calibration procedure for the characterization of
field sensors is presented. It is based on the use of a simple
structure for the generation of a known field, the TEM-horn cell.
The achieved sensor transfer function (amplitude and phase) allows
the measurement of very fast transient field (e.g. Electrostatic
Discharge radiated fields) through the application of a simple
deconvolution procedure to the sensor output voltage time history.
Index terms: Transient fields, sensor calibration, transfer function,
deconvolution procedure.
EMCABS: 09-8-2004
reproducibility of the destruction effects in integrated circuits
Michael Camp and Heyno Garbe
University of Hannover, Institute for Electrical Engineering and
Measurement Science, Germany
camp@ieee.org,
garbe@ieee.org
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 1, pp.437-440
Abstract: In this paper the reproducibility of the destruction
effects in integrated circuits, after impact of fast transient
electromagnetic pulses, is discussed. It is shown that very high
reproducibility rates are achievable at simple logic devices as
well as at high-integrated personal computer systems.
Index terms: EMP, UWB, destruction effects, reproducibility, integrated
circuits, microscopic analysis.
EMCABS: 10-8-2004
emc macro – model (leccs – core) for multiple power
– supply pin lsi
+, ++Katsumi Nakamura, ++Tomohiro Toyota, ++Osami Wada, ++Ryuji
Koga and +++Naoki Kagawa
+ DENSO Corporation
++ Faculty of Engineering, Okayama University
+++ Faculty of Engineering, Fukuyama University
Katsumi_nakamura@denso.co.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 2, pp.493-496
Abstract: In this paper, an EMC macro-model for a multiple power-supply-pin
LSI was investigated. The model was devised for a microcontroller
operated with three kinds of power-supply groups: Core, I/O, and
Analog circuits. For each power pin and a ground pin associated
with it, the model consisting of a linear equivalent circuit and
an internal current source was derived from measurements. Based
on the model, impedance and current simulations were carried out
for two power/ground pairs core circuits that are electrically
connected to each other. It was verified that the simulated impedance
and current using the proposed model were in good agreement with
measurements up to 500 MHz.
Index terms: RF power current, power-current model, LECCS, multiple
power-supply pin LSI.
EMCABS: 11-8-2004
a new method for realizing local exposure to young rat heads using
electric flux concentration for bio – effect test of mobile
telephones
Jianqing Wang and Osamu Fujiwara
wang@elcom.nitech.ac.jp
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 2, pp.581-584
Abstract: In this paper, we proposed a method to realize a highly
localized exposure in young rat heads for a bio-effect test of
electromagnetic exposure from 1.5 GHz mobile telephones. Paying
attention to the ability of electric flux concentration of ferroelectric
material, we wound its flex sheet around the head part of a plastic
rat holder, which is generally used to restrain the rat for obtaining
a fixed exposure level, in order to induce a strong magnetic field
inside the holder. Numerical simulations with an anatomically
based young rat model showed that a ratio of 7 of the average
specific absorption rate (SAR) in the brain to that in the whole
body was realized. An exposure experiment with solid young rat
phantoms also showed the validity of the method.
Index terms: Bio-effect, mobile telephone, dosimetry, specific
absorption rate, exposure setup.
EMCABS: 12-8-2004
Controlling apature resonance using novel coating techniques:
theory, simulations and mesurements
Omar M. Ramahi and Lin Li
oramahi@calce.umd.edu
Proceedings of 2004 International Symposium on Electromagnetic
Compatibility, Sendai, Japan, June 1-4, 2004, Vol. 2, pp.861-864
Abstract: In this work, we propose the use of resistive sheets
to improve the shielding effectiveness of enclosures with apertures.
It is found that a significant reduction of electromagnetic leakage
is possible by using loading techniques inspired by the transmission
line interpretation of current distribution on apertures at the
resonance frequency of the aperture. Results from numerical simulations
as well as from laboratory measurements are presented to validate
the concept presented.
Index terms: Electromagnetic compatibility, electromagnetic interference,
aperture, coupling, Finite-Difference Time-Domain Method. EMC
EMCABS
