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IEEE International Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.00CH37016)

21-25 Aug. 2000

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  • IEEE International Symposium on Electromagnetic Compatibility [front matter]

    Publication Year: 2000, Page(s):i - xvi
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    Freely Available from IEEE
  • Estimation of radiated emission sources with arbitrary directional current components using CISPR measurement system

    Publication Year: 2000, Page(s):723 - 728 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (457 KB)

    Relating to the radiated emission sources finding method utilizing CISPR emission measurement system, which uses only amplitude data without phase data, the applicability to sources with arbitrary directional current components was studied. We propose a new finding algorithm in which the horizontal and the vertical current components are estimated at the same time by taking into account the contri... View full abstract»

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  • Author index

    Publication Year: 2000, Page(s):991 - 995
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    Freely Available from IEEE
  • Subject index

    Publication Year: 2000, Page(s):996 - 1000
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (435 KB)

    The index contains an entry for all items that appeared in this publication. View full abstract»

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  • Instantaneous frequency distribution (IFD) measuring equipment having a 500 MHz bandwidth

    Publication Year: 2000, Page(s):593 - 598 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The measurement of instantaneous frequency distribution (IFD) is proposed and prototype measuring equipment constructed to obtain the characteristics of wideband disturbance and to evaluate the effects of such disturbance on wideband digital communications. We propose an IFD measurement approach in which a wideband signal is received, and the distribution of the detected voltage corresponding to t... View full abstract»

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  • Methods for speeding up radiated and conducted immunity tests

    Publication Year: 2000, Page(s):587 - 592 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Different methods for reducing test time in immunity tests similar to IEC 61000-4-6 or IEC 61000-4-3 are compared. One option is to apply multiple signals at the same time. Hardware and software methods to create those signals are explained, limits and possible amplitude errors are discussed. Mode stirred chambers and methods which aim at substituting sinusoidal excitation by strong pulsed signals... View full abstract»

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  • Can a slot act as a band pass aperture?

    Publication Year: 2000, Page(s):581 - 585 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The paper discusses the performance of slots in a shielded enclosure, with special emphasis on slots in thick walls. A special “anomaly” is presented, where, in contrast to acceptable shielding theory of dots, provided a lower shielding effectiveness (SE) at lower frequencies that at higher frequencies, while waveguide below cutoff conditions were barely valid. The paper presents the a... View full abstract»

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  • A study on the model of the slit on the ground plane

    Publication Year: 2000, Page(s):575 - 580 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    On a printed circuit board, if a slit on the ground plane exists between two lines, then the coupling between the lines is increased in some cases. This paper proposes the model that allows easy evaluation of the transmission characteristics of the lines (include coupling between lines) if a slit exists. This model is composed of a transmission line, where the slit acts as a slot line, an ideal tr... View full abstract»

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  • EMC combined di/dt current probe

    Publication Year: 2000, Page(s):569 - 573 vol.2
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    A current sensor for the analysis of conducted radio-frequency interference (RFI), based on an air-cored and screened Rogowski coil, is presented. The sensor is realised as a convenient current clamp, suitable for on-site measurements, e.g. in industrial environments. The probe is insensitive to strong mains power frequency currents, electric and magnetic fields, and parasitic air gap. With an inc... View full abstract»

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  • Quasi-frequency-independent, H-plane, log-periodic dipole arrays for automotive EMC immunity testing applications

    Publication Year: 2000, Page(s):563 - 568 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A new, quasi-frequency-independent, H-plane array of log-periodic dipole array (LPDA) antenna has been developed. Because of the reduced H-plane beamwidth, this configuration is shown to be much more appropriate for immunity testing in the presence of a conducting ground plane, especially for horizontal polarization tests. Also, a new feed configuration greatly facilitates high-power operation. A ... View full abstract»

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  • Measured electromagnetic shielding characteristics of fabric made from metal clad aramid yarn and wire

    Publication Year: 2000, Page(s):883 - 886 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The electromagnetic shielding characteristics of four fabric samples made from metal clad aramid yarn and nickel plated copper wire were measured from 1 kHz to 3 GHz. Below 100 kHz, these measurements showed that the surface transfer impedance or surface resistivity ranged from 0.5 mΩ/square to 1.3 mΩ/square. This is extremely good. In this frequency range, the current flows on the wir... View full abstract»

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  • The attenuation characteristics of noise filter using motor-generator

    Publication Year: 2000, Page(s):557 - 562 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In this paper, a power line noise filter using motor-generator (M-G noise filter) which has superior suppression characteristics than the traditional L-C noise filter is proposed. In order to prove the possibility to realize an M-G noise filter, the attenuation characteristics (high-frequency characteristics) of the motor-generator are experimentally and theoretically evaluated. It is shown that t... View full abstract»

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  • A calibration procedure for reverberation chambers

    Publication Year: 2000, Page(s):621 - 626 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    This paper documents a calibration procedure for reverberation chambers. The method described was developed as part of an ongoing effort to introduce reverberation chambers into military and commercial standards. This work was conducted in cooperation with both industry and standards organizations. The effort described herein is intended to provide an accurate and economic methodology for calibrat... View full abstract»

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  • Protection of cables by grounding structures

    Publication Year: 2000, Page(s):877 - 882 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Conduits of various shapes offer good electromagnetic protection to cables placed inside. As measure of protection, the transfer impedance has been studied; in the frequency range of interest the current adjusts between the low and high frequency distribution in the conduit. Quasistatic two-dimensional calculations are based on the method of moments and on conformal transformations. Practical U, H... View full abstract»

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  • The calculation of current on thin wires using a differential technique

    Publication Year: 2000, Page(s):551 - 556 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The calculation of induced current on wires is important if equipment immunity to electromagnetic hazards is to be assessed by numerical modelling. Differential techniques in the time domain are attractive for dealing with EMC calculations over a wide frequency range that involve complex geometries. This paper discusses the “in-cell” inductance and capacitance thin wire model currently... View full abstract»

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  • Comparison of anechoic and reverberation chamber coupling data as a function of directivity pattern

    Publication Year: 2000, Page(s):615 - 620 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    This paper compares coupling data from an external field to an internal probe for anechoic and reverberation chamber tests as a function of the directivity pattern of a test article and the test conditions for both chambers. The investigation uses an extensive measurement data base from both anechoic and reverberation chambers. In an ideal anechoic chamber test, the test article is illuminated by ... View full abstract»

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  • Containing emissions from a microprocessor module

    Publication Year: 2000, Page(s):871 - 876 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    Based on the Faraday cage principle a solution to contain noise at the modular level of a microprocessor (μP) is presented. This solution builds a conductive enclosure around the module. Using a metallic skirt the enclosure is connected to the ground structure of the motherboard to complete a six-sided box. For the shield design to be implement-worthy, it had to be ensured that neither the ther... View full abstract»

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  • Millimeter wave absorber using M-type hexagonal ferrite

    Publication Year: 2000, Page(s):547 - 549 vol.2
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Millimeter wave absorption properties of M-type hexagonal ferrite SrFe12-xAlxO19 composites have been investigated. The complex permittivity and permeability of the materials were measured by a free space method. When ferric ion was partially substituted by aluminum ion, the ferromagnetic resonance frequency moved up from 52 GHz to 83 GHz, corresponding to the incr... View full abstract»

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  • Parameters and results of SE-measurements performed in mode-stirred chambers

    Publication Year: 2000, Page(s):611 - 614 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Regarding shielding effectiveness measurements in mode-stirred chambers there are a lot of unknown variables concerning the operation mode of the chamber and the evaluation of measurement data. This paper is aimed at determining the best operation mode-e.g. mode-tuned or mode-stirred mode-and the minimum number of measurement samples. The results obtained from shielding effectiveness measurements ... View full abstract»

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  • Imperfections in the theoretical NSA model can adversely or favorably affect a site validation measurement and a proposal for correction factors for broadband biconical antennas

    Publication Year: 2000, Page(s):493 - 498 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    It has been shown that the normalized site attenuation (NSA) test as described in ANSI C63.4 has up to 2.5 dB of error in the model when biconical antennas are used from 30 to 200 MHz. These error values have been predicted through numerical modeling techniques. The numerical model was empirically validated for biconical antennas using both 200:50 ohm balun transformers and 50:50 ohm balun transfo... View full abstract»

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  • Transient analysis of wave processes for multi-conductor transmission lines with branches using FDTD

    Publication Year: 2000, Page(s):699 - 703 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Based on the multi-conductor transmission lines (MTLs), the three-phase 500 kV busbars and power lines in a 500 kV substation are modeled as the MTLs with branches in order to evaluate the electromagnetic fields radiated from the substation during the switching operation. The iterative formulae are presented to determine the boundary conditions at the node of the branches in this paper. The wave p... View full abstract»

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  • Determination of combined cable shield and interstitial foil impedance for IWS harness

    Publication Year: 2000, Page(s):685 - 690 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A SPICE model of the foils and overbraiding of an integrated wiring system (IWS) harness is created to characterize their combined impedance as a function of frequency. Comparison of predicted values of impedance to measured data for a modeled cable harness is accomplished, in which fair agreement is seen to exist. A straightforward empirical adjustment is then made to the SPICE model, which resul... View full abstract»

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  • Uncertainty rationale for compliance margin factors

    Publication Year: 2000, Page(s):669 - 673 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Determination of a factor that provides an adequate margin of compliance with applied electromagnetic interference (EMI) limits is critical in a dynamic competitive marketplace. A factor that is too large will impose excessive costs on product design, whereas too small a factor exposes a product to the risk of noncompliance with regulatory standards with all the attendant ramifications attached. I... View full abstract»

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  • EMC in Taiwan

    Publication Year: 2000, Page(s):651 - 656 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    As the Taiwan population grows and as living space becomes smaller, the importance of electromagnetic compatibility (EMC) becomes more demanding. To assure the compatibility of an electronic and/or electrical product, Taiwan has enforced EMC regulations since 1997. The regulatory agency is the Bureau of Standards, Metrology and Inspection (BSMI). The EMC management system can seem to be complicate... View full abstract»

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  • Effect of installing magnetic-polymer-composite sheeting on transmission line to suppress conducted-electromagnetic noise

    Publication Year: 2000, Page(s):867 - 870 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Magnetic-polymer-composite sheeting is used to suppress radiated electromagnetic noise generated from electronic equipment. The sheeting is a combination of a soft-magnetic-metallic powder and a polymer. Installing this sheeting on transmission lines on substrates, attenuates the conducted-electromagnetic noise. In this paper we describe the effect on the transmission line characteristics due to t... View full abstract»

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