EMCABS

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

EMCABS: 01-05-2005
PARAMETER ESTIMATES FOR THE STIRRER EFFICIENCY IN REVERBERATION CHAMBERS
Niklas Wellander, Olof Lund´en, Mats B¨ackstr¨om
Swedish Defence Research Agency, FOI, Sweden, E-mail: niklas@foi.se
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.35-38.
Abstract: We have identified a model for the design of efficient stirrers in reverberation chambers. It turns out that the far most important parameter is the diameter of the stirrer. The impact of the diameter is cubic in comparison with the stirrer height.
Index terms: Reverberation chamber, stirrer, immunity measurement.

EMCABS: 02-05-2005
INVESTIGATION OF AUTOMOTIVE EMISSIONS MEASUREMENT, FREQUENCIES, TEST METHODS AND OPERATING MODES
A. R. Ruddle
Electrical Group, MIRA Limited, UK, E-mail: alastair.ruddle@mira.co.uk
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.115-120.
Abstract: Vehicle emissions tests are normally carried out over the band 30-1000 MHz for fixed geometrical configurations and static operating modes. However, recent technological developments in vehicles are such that these tests may not allow the emissions from modern vehicle systems to be adequately characterized. Experimental measurements have been carried out for frequencies in the range from 9 kHz to 1 GHz, using both fixed geometrical configurations and height/azimuth scanning methods. Emissions under a dynamic, steady-state test mode and at frequencies in the band 1-10 GHz have also been investigated. The results of this study suggest that the existing standards may require further development.
Index terms: Automotive EMC, emission, vehicle, measurement.

EMCABS: 03-05-2005
INFLUENCE OF THE PCB TRACES OF AUTOMOTIVE ELECTRONIC EQUIPMENT IN THE CASE OF RANDOM CABLE HARNESSES
+S. Egot, +M. Klingler, ++L. Koné, ++S. Baranowski, ++B. Démoulin
+ PSA Peugeot Citroën, DPTA/DMFV/ASEE, Vélizy-Villacoublay, France, E-mail: stephane.egot@mpsa.com
++ TELICE, Univ. des Sciences et Technologies de Lille, Villeneuve d’Ascq, France
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.125-130.
Abstract: Numerical simulation used to predict disturbances induced at the end of cable harnesses connected to automotive electronic equipment requires a realistic knowledge of the terminal loads. This supposes that these loads should be known as well as necessary to perform reliable simulations. The randomness of automotive cable harnesses raises the question of the precision needed on these loads. This paper focuses in particular on the need for data unavailable in the early stage of development such as traces on the PCB of the equipment. Despite the random effect of the cable harness, the results show that the PCB traces cannot be omitted when terminal electrical responses are considered. The statistical behavior of the cable harness is compared to the response of a uniform bifilar cable.
Index terms: Automotive EMC, PCB trace, harness, coupling.

EMCABS: 04-05-2005
TIME DOMAIN CHARACTERISTICS OF RESISTIVELY-LOADED ELECTRIC FIELD SENSORS
+J. McLean, ++H. Foltz, +R. Sutton
+ TDK R&D Corp., Austin, Texas, USA, E-mail: jmclean@tdkrf.com
++ The University of Texas—Pan Am, Edinburg, Texas, USA
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.167-172.
Abstract: Resistively-loaded linear and tapered dipoles are widely used as electric field sensors. Quantitative time-domain pattern descriptors for ultra-wideband antennas have been previously defined, including the energy pattern, correlated energy pattern, and correlation coefficient. We apply these descriptors to the loaded antennas mentioned above. The loaded tapered dipole is shown to have a correlated energy pattern that is significantly flatter than the untapered counterpart, and far superior to the unloaded case. The often-cited traveling-wave current distribution is shown to produce distortion that is dependent on angle.
Index terms: Electric field sensor, dipole, time domain measurement.

EMCABS: 05-05-2005
COMPARISON BETWEEN THE THREE ANTENNA METHOD AND THE MEASURING IMPEDANCE METHOD FOR THE ANTENNA FACTOR OF A SMALL HALF LOOP ANTENNA
M. Ishii and K. Komiyama
National Institute of Advanced Industrial Science and Technology, Japan, E-mail: masanori-ishii@aist.go.jp
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.173-178.
Abstract: Various methods have been proposed and investigated before, for the evaluation of the magnetic antenna factor of a small circular loop antenna. In this paper, we adopted the “Measuring Impedance Method” and the “3-Antenna Method” among many measurement methods, and these two methods are compared with each other by numerical simulation and by experiment. This comparison shows a result that both of the methods are effective. It becomes also clear that the “Measuring Impedance Method” is more effective than the “3-Antenna Method” in the lower frequency range.
Index terms: Antenna factor, three-antenna method, measuring impedance method, calibration.

EMCABS: 06-05-2005
ANALYZING THE COUPLING PRINCIPLES OF RADIATED IMMUNITY TESTS FOR AUTOMOTIVE COMPONENTS IN THE UHF BAND
+B. Körber, +D. Sperling, ++K. H. Gonschorek
+ Zwickau University of Applied Sciences, Research and Transfer Center, Germany, E-mail: bernd.koerber@fh-zwickau.de
++ Dresden University of Technology, Electromagnetic Compatibility Division, Germany
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.183-188.
Abstract: Using the antenna test set-up according to ISO 11452 part 2 leads to a high test power consumption and may yield to a “low level testing” as well as different test results caused by the short measurement distance and the differences in the realization of the ground plate connection to the measurement ground system. The Wave Coupler is a proposal for a new alternative test method for immunity testing of small and/or shielded electronic components, which is based on a coupling of disturbances into the connecting cables with an effective broadband coupling function. The analysis of the coupling principles of antenna and Wave Coupler test methods give corresponding relations.
Index terms: Radiated immunity, coupling, Wave Coupler test.

EMCABS: 07-05-2005
SINGLE SUMMATION EXPRESSION FOR THE RECTANGULAR POWER GROUND PLANE CAVITY
+ J. Trinkle and ++A. Cantoni
+ University of Western Australia, School of Electronic Engineering, Australia, E-mail: trinkl-j@watri.org.au
++ Western Australian Telecommunications Research Institute, Australia
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.247-250.
Abstract: The key contribution of this paper is the derivation of a single summation expression for input and transfer impedances for ports on rectangular power planes. The first term of the expression is shown to be the transmission line solution and the remaining series is shown to be a compensation term for the non-uniform field variation along the width of the planes. Guidelines are given for the efficient use of the expression.
Index terms: PCB, power plane, transfer impedance, transmission line solution.

EMCABS: 08-05-2005
USING ICEM MODELS FOR SUBSTRATE NOISE CHARACTERIZATION IN MIXED SIGNAL IC’S
+O. Valorge, ++C. Andrei, +B. Vrignon, ++F. Calmon, ++C. Gontrand, ++J. Verdier, +P. Dautriche
+ STMicroelectronics, France, E-mail: olivier.valorge@st.com
++ LPM INSA Lyon, France
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.353-356.
Abstract: The paper deals with the problems of crosstalk reduction in multi-conductor transmission lines. The fundamental properties of coupled lines are studied with the aid of an electromagnetic simulator. This investigation leads to the conclusion that crosstalk elimination is possible even when different signals are transmitted through non-orthogonal sets of the line’s modes. Practical circuit configurations with such properties are shown and reference to experimental verification of the effects is provided.
Index terms: Chip and package level EMC, crosstalk, ICEM model.

EMCABS: 09-05-2005
ASSESSMENT OF RESONANCE PROPERTIES OF ELECTRICALLY SMALL PCBS VIA RADAR CROSS-SECTION MEASUREMENTS IN A GTEM CELL
D. Pouh`e, G. M¨onich, W. Fami Kemi
Technical University Berlin, Germany, E-mail: pouhe@emc.ee.tu-berlin.de
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.357-362.
Abstract: Although radiation from a PCB can be treated by numerical simulations, real EMI behavior of a PCB during the design phase is accurately obtained via measurements. In the presence of an RLC-circuit on the PCB for example, resonances are carried over. These resonances tend, on their own, to carry interference over much longer distances, which can not be predicted by field or galvanic coupling. Resonance behavior of the reradiated field is therefore a good figure of merit in diagnosing radiation problems on a PCB. The present work addresses these particular points. Of particular note, a novel approach to experimentally evaluate resonance properties of a PCB is presented. The method is based upon measurements of the radar cross-section (RCS) in a GTEM cell, demonstrating thereby that the GTEM cell can be simultaneously used for emission and susceptibility measurements.
Index terms: PCB, resonance, RCS measurement, GTEM cell.

EMCABS: 10-05-2005
THE EFFECTS OF HEMP AND UWB PULSES ON COMPLEX COMPUTER SYSTEMS
+D. Nitsch, +A. Bausen, +J. Maack, ++R. Krzikalla
+Scientific Institute for Protective Technologies, Electromagnetic Effects Branch, Germany, E-mail: DanielNitsch@bwb.org
++ Technical University of Hamburg-Harburg, Department of Measurement Engineering and EMC, Germany
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.373-376.
Abstract: The susceptibility of complex electronic systems to HEMP of different parameters is of interest to show the threat potential of exo - atmospheric nuclear blasts. In this paper, susceptibility measurements of complex computer systems to different HEMP will be presented. Additionally, the susceptibility of these systems to electromagnetic ultra wideband pulses with rise times in the 100 ps regime is compared to the HEMP susceptibility. The susceptibility behavior of the computer systems is described by a mathematical model and the results are compared with the measurements.
Index terms: Susceptibility, HEMP, UWB, computer system.

EMCABS: 11-05-2005
TRANSFER ADMITTANCE AND IMPEDANCE FOR SHIELDED COAXIAL CABLES: EVALUATION BY VOLTAGE MEASUREMENTS
G. Antonini, A. Orlandi, R.M. Rizzi
Department of Electrical Engineering, University of L’Aquila, Italy, E-mail: orlandi@ing.univaq.it
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.551-556.
Abstract: The paper aims to combine measurement of the voltages induced at the shielded coaxial cable terminations with the computation of the same voltage by means of an accurate circuit model in order to evaluate the values of Zt and Yt of the actual portion of the cable under test. A bulk current injection (BCI) clamp forces currents on the exterior of the braided shield of the cable; these currents induce voltages across the termination impedances of the inner conductor and these voltages are measured. The same voltages are computed by means of the above mentioned circuit models which have the values of Zt and Yt among the input parameters. A best fit between the measured and computed values of the termination voltages is obtained by tuning the values of Zt and Yt, starting, for example, from their nominal values. These are the sought values of the cable’s transfer parameters.
Index terms: Transmission line, transfer admittance, coaxial cable.

EMCABS: 12-05-2005
EFFECT OF MODELING FRINGING AND LOSSES FOR A MICROSTRIP ON THE RADIATED EMISSION CHARACTERISTICS
+B. Wong, ++A. Cantoni, ++K. Fynn, +++J. Trinkle
+ Curtin University of Technology, Department of Electrical Engineering, Australia, E-mail: bert-w@watri.org.au
++ Western Australian Telecommunications Research Institute, Perth WA, Australia
+++ University of Western Australia, School of Electronic Engineering, Perth WA, Australia
Proceedings of the 16th International Zurich Symposium and Exhibition on EMC, Zurich, Switzerland, February 13-18, 2005, pp.557-562.
Abstract: This paper presents the results of an investigation on emissions from a loaded microstrip. A number of models for the transmission line current are considered. The results obtained are compared to field based simulations and experimental results.
Index terms: Transmission line, microstrip, emission, fringing. EMC