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IEE Proceedings - Science, Measurement and Technology

Issue 4 • Date Jul 1994

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Displaying Results 1 - 16 of 16
  • Recent developments in measurement techniques for use in screened rooms

    Publication Year: 1994, Page(s):273 - 277
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    Screened rooms have been used for many years to perform electromagnetic compatibility measurements in an electromagnetically isolated environment. It is only in recent years that measurement techniques have been developed that to some extent overcome many of the difficulties encountered when a measurement is performed in a totally or partially reflecting environment. The paper reviews these recent... View full abstract»

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  • Electromagnetic compatibility of building cables

    Publication Year: 1994, Page(s):263 - 265
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (244 KB)

    There is at the moment little accepted guidance available to installers on good installation practice for achieving EMC. Existing EMC standards, for example, specify only immunity and emissions levels for products: they do not address the way products should be installed and the precautions that need to be taken to avoid interference in an installed system. This creates particular difficulties for... View full abstract»

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  • Experimental study of the calibration of antenna-screened enclosure combinations for radiated emission measurements in the frequency range from 1 to 30 MHz

    Publication Year: 1994, Page(s):278 - 282
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    An experimental study of the calibration of antenna-screened enclosure combinations is described in the frequency range 1-30 MHz. It is shown that such a combination can be used, in conjunction with a spherical dipole transfer standard, to provide estimates of the electric and magnetic fields that would be radiated by equipment on an open area test site from measurements performed on the equipment... View full abstract»

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  • New frequency-domain TLM method for the numerical solution of steady-state electromagnetic problems

    Publication Year: 1994, Page(s):310 - 316
    Cited by:  Papers (13)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB)

    A novel frequency-domain TLM (transmission line modelling) method (TLM-FD) is described for the 3-D symmetrical condensed TLM node. It is shown that the less restrictive requirements of a frequency-domain solution permits variation of the electrical properties and density of the mesh, using node structures without stubs. The complete theory of TLM-FD is given and numerical results are provided for... View full abstract»

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  • FDTD evaluation of scattering by metallic objects in GTEM cells

    Publication Year: 1994, Page(s):287 - 292
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (320 KB)

    The finite difference time domain (FDTD) technique, developed in a polar coordinate system, is used to analyse the scattering by metallic objects in a gigahertz transverse electromagnetic (GTEM) cell. The advantage of using the FDTD method is the noticeable mathematical simplification, with respect to the analytical approach, which allows one to treat general structures and electrical characterist... View full abstract»

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  • UK implementation of the EMC Directive

    Publication Year: 1994, Page(s):234 - 237
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (300 KB)

    The reasons for the EC Directive on electromagnetic compatibility are outlined. The UK approach to implementation is described. The content of parts 1, 2, 4 and 5 of the UK regulations is examined. Likely future changes to the Directive and its implementation in the UK are outlined and the content of the EC explanatory document is summarised View full abstract»

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  • Response of externally excited coaxial cables with wire braided shields

    Publication Year: 1994, Page(s):266 - 272
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (448 KB)

    The frequency responses of coaxial cables employing wire braided shields, excited by external fields, is studied using an algorithm based on a distributed circuit model, which uses both electric and magnetic field parameters to model the external field coupling. The simplicity and fast speed of the model enable computer-aided analysis of externally induced noise in cable interconnects to be carrie... View full abstract»

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  • Present state of electromagnetic compatibility education and prospects for the future

    Publication Year: 1994, Page(s):259 - 262
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    Electromagnetic compatibility (EMC) education issues are reviewed in the light of legislation within the European Union which will significantly affect designers and manufacturers of electronic equipment and systems. Of particular importance is the problem of introducing yet more new material into already overloaded undergraduate courses. The multidisciplinary aspect of EMC is stressed, as is the ... View full abstract»

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  • Electromagnetic modelling for EMC using finite methods

    Publication Year: 1994, Page(s):303 - 309
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (560 KB)

    The application of finite numerical electromagnetic techniques to electromagnetic compatibility based problems is reviewed. The factors which determine the performance and limitations of a numerical approach are first considered. Then the operation of the three main techniques (finite difference, transmission-line matrix, and finite element) is explained. The paper concentrates mainly on time-doma... View full abstract»

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  • Advances in measurement methods and reduction of measurement uncertainties associated with antenna calibration

    Publication Year: 1994, Page(s):283 - 286
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (304 KB)

    A major source of uncertainty in electromagnetic-compatibility conformance testing is the antenna factor. Until recently, broadband antennas in the frequency range 30 MHz-1 GHz were calibrated typically to an uncertainty of ±2 dB. Antennas can now be calibrated to an uncertainty of less than ±0.5 dB. This has made it possible to quantify a second category of uncertainties which arise... View full abstract»

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  • Electromagnetic compatibility in the automotive environment

    Publication Year: 1994, Page(s):252 - 258
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (536 KB)

    Modern automotive vehicles depend increasingly on sophisticated electronic control systems to enhance driver comfort and vehicle safety. Radiated immunity testing of cars to field strength levels of the order of 50 V m-1 has been an important part of the vehicle development process for the last decade because of the harsh environment encountered and the safety-related nature of the cont... View full abstract»

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  • Electromagnetic computer modelling for EMC (integral methods)

    Publication Year: 1994, Page(s):297 - 302
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (496 KB)

    The paper reviews methods for computer modelling of electromagnetic fields with particular application to EMC. The interconnection system of a piece of electronic equipment, which comprises PCB, cables, packages etc. is described as an additional component, which acts as both a source and receiver of stray electromagnetic fields. This component, which in general has extremely complex shape, is mod... View full abstract»

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  • Development of the generic standards

    Publication Year: 1994, Page(s):249 - 251
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (184 KB)

    The generic standards were devised by CENELEC to allow manufacturers to show compliance with the EMC directive. Product standards, where these exist, take precedence over the generic standards. Generic standards are based on the electromagnetic conditions existing at typical locations. They are the result of compromises between widely different views among the European countries. They depart from ... View full abstract»

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  • Advances in design for EMC

    Publication Year: 1994, Page(s):293 - 296
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    The conceptual approach to EMC design is discussed, and the various methods of practical implementation of an EMC control policy are presented. Design for EMC is an issue which has rapidly increased in importance in recent years, driven by legal, reliability and commercial demands. The move to include EMC characteristics as an integral element of the design process has been evident even in lower p... View full abstract»

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  • Electromagnetic compatibility of radio telecommunications equipment

    Publication Year: 1994, Page(s):244 - 247
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (356 KB)

    The paper gives an overview of the application of the electromagnetic compatibility directive to radiocommunications equipment, the interaction with the telecommunications terminal equipment and satellite Earth station equipment directives and some changes to the European regulation of EMC. It also describes the main features of the UK implementation of the EMC directive, with special reference to... View full abstract»

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  • Electromagnetic compatibility in Europe

    Publication Year: 1994, Page(s):238 - 243
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    The Directive on electromagnetic compatibility (EMC) came into force on 1 January 1992. For various reasons, manufacturers are permitted to delay application of the Directive until 31 December 1995. The Department of Trade and Industry launched an awareness campaign in January 1993 which has provided many initiatives, and is maintaining momentum in the United Kingdom during this four-year transiti... View full abstract»

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