Following are abstracts of papers from previous EMC symposia, related conferences, meetings and publications.

Bob Hunter, Consultant
Sha Fei, EMC Research Section, Northern Jiatong
University, Beijing, China
Ferdy Mayer, L.E.A.D., Maisons, Alfort France
Maria Sabrina Sarto, Department of Electrical Engineering, University of Rome, Italy

“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


EMCABS: 01-8-2004
+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
+++ 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
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
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
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
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
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
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
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
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

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