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Electromagnetic Interference and Compatibility '99. Proceedings of the International Conference on

Date 6-8 Dec. 1999

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Displaying Results 1 - 25 of 107
  • Power-frequency (ELF) electromagnetic fields in the studies of their hazardous effects on living beings

    Publication Year: 1999, Page(s):453 - 458
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB)

    Life on Earth is nearly completely dependent on electricity. Whilst this has revolutionized life of mankind, it has also posed the question of possible hazardous effects of electromagnetic fields (EMFs)-essentially associated with all current carrying circuits-on all living beings, including humans. The majority of studies of ill-effects of EMFs on humans have been revolving around the time varyin... View full abstract»

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  • Advanced technologies and their impact on EMC standardization and EMC measurement techniques

    Publication Year: 1999, Page(s):241 - 243
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (224 KB)

    New technologies in combination with the demand from the market will affect future work in EMC standardization, test concepts as well as the development of new EMC test instrumentation and systems. Trends can already be recognized. The paper describes the market demands, technology trends in different product areas and current changes in EMC standardization. Some of the requirements for new EMC me... View full abstract»

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  • Biological effects and health implication of radiofrequency and microwave

    Publication Year: 1999, Page(s):449 - 452
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (272 KB)

    Low level electromagnetic fields have been found to produce a variety of biological effects, though the mechanism of such interactions is still not completely understood. The cell membrane of the brain is a critical structure perceiving the action of microwaves, which has received greater attention. The interactions of EM fields with living cells are considered for stochastic resonance, cooperativ... View full abstract»

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  • Firmware dependency of EMC performance

    Publication Year: 1999, Page(s):177 - 180
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    Performance of an electronic system is generally believed to be a function of components, circuit layout and enclosure design, i.e. hardware dependent. But this is not entirely valid for embedded systems. For such systems, in addition to hardware factors, design of firmware also impacts EMC performance of the system. This paper examines such firmware dependencies of system EMC performance and offe... View full abstract»

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  • Importance of receiver dwell time in emission measurements

    Publication Year: 1999, Page(s):237 - 240
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (196 KB)

    The EMC regulations call for conducted and radiated emission tests for majority of electrical and electronic equipment. Most of the relevant standards specify only the resolution bandwidth and detection modes to carry out the tests without specifying the dwell time selection. The choice of dwell time along with resolution bandwidth is an important factor because it affects the measurement results ... View full abstract»

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  • Global EMC scenario for public telecommunication networks and Indian perspective

    Publication Year: 1999, Page(s):330 - 339
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (884 KB)

    An overview of EMC from the perspective of a telecommunication network operator is presented. Areas of relevance to a telecommunication network operator are identified with an introduction to some of the EMI related problems including issues relating to activities in the area of adoption of standards, incorporation of standards in procurement specifications, EMC test facilities, installation pract... View full abstract»

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  • EMC requirements in European Community directives other than EMC Directives

    Publication Year: 1999, Page(s):306 - 308
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (176 KB)

    The EMC requirements which have been made mandatory by the European Community have been incorporated in the EMC Directive. There are, however a number of other Directives of the European Community which also have EMC requirements incorporated. These include a number of Directives in the draft stage. The EMC requirements have been made an essential part of these Directives and have been made mandat... View full abstract»

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  • Reduction of EMI from SMPS (switched mode power supplies) by resonance technique and its utilities in industrial process control instruments

    Publication Year: 1999, Page(s):445 - 448
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    EMI restricts automation of the process control industries. A method of solving EMI problems by using a SMPS power supply and resonating it at high frequency is described. At the same time use of resonance mode SMPS helps by provide advantages of higher efficiency (95%), less heat dissipation, reliability of operation and compactness. This paper is the outcome during development and maintenance of... View full abstract»

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  • A critique on certification of EMC professionals

    Publication Year: 1999, Page(s):172 - 176
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (352 KB)

    Because of rapid technological growth of electrotechnical industry and a high degree of obsolescence, human resource requirements are also becoming more specific and fast changing in this field. Technical inputs to these requirements, come from various disciplines like electrical engineering, electronics and telecommunication, physics etc. and manpower inputs from academic on the job experience an... View full abstract»

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  • Study of conducted susceptibility of power converters

    Publication Year: 1999, Page(s):231 - 236
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    The most widely used offline switched mode power supplies (SMPS) are prone to conducted noise, despite line filters and other protection circuitry at their front-end. They are exposed to LV power line transients which are one of the most dangerous types of conducted noise. These transients can be either differential mode (DM) type or common mode (CM) type. The CM line transients can cause malfunct... View full abstract»

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  • Antenna near field intensity prediction

    Publication Year: 1999, Page(s):109 - 114
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    Situations arise where several systems operate in close proximity on a given platform like an armoured carrier, aircraft carrier, or an aircraft. In some of these systems, like radar, the radiated RF powers are high and due to close proximity with other systems, high field intensities are likely to get coupled to them through antenna to antenna coupling, antenna to box coupling, and antenna to wir... View full abstract»

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  • Some aspects of bulk cable current injection (BCCI) test method at system level testing of an aircraft

    Publication Year: 1999, Page(s):29 - 34
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    The Bulk Cable Current Injection (BCCI) testing, at equipment/subsystems/system level has been recognised as a promising technique in lieu of radiated susceptibility testing upto few hundreds of MHz. Although it is an efficient technique for the evaluation of electromagnetic susceptibility (EMS) of the system, but at the same time due to its instrumentation particularly bulky and heavy current inj... View full abstract»

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  • EMC and antenna measurements of digital mobile telephones

    Publication Year: 1999, Page(s):315 - 317
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    Digital mobile telephones have to be tested on EMC emission and immunity. In Europe the ETSI product family standards define the test methods and limits for these measurements. Very often the manufacturer is also interested in the antenna characteristics of the mobile telephone. Therefore the question arises, how far an existing EMC test facility can be used for additional antenna measurements. A ... View full abstract»

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  • Error analysis in surface transfer impedance measurements on shielded cables

    Publication Year: 1999, Page(s):126 - 128
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (140 KB)

    This paper describes, with experimental data and graphs, errors in the surface transfer impedance (STI) measurements that could resulted from different input power levels applied to the test cable. It also describes the causes of the errors due to other reasons and how they could be avoided. It concludes by justifying the appropriate input power level to be used while using this particular standar... View full abstract»

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  • EMI reduction in a broadband LOS link at millimeterwave by spread spectrum technique

    Publication Year: 1999, Page(s):326 - 329
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (172 KB)

    This paper is based on broadband direct sequence spread spectrum (DS-SS) technology. Such a system will be very useful for information technology and networking for establishing the 'Global Village' in the 21st century. The use of millimeter waves allows very broadband multimedia communication required for very high speed information transfer with high reliability; such a system will be an attract... View full abstract»

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  • Role of transient/surge suppressors in a typical airborne system. A case study

    Publication Year: 1999, Page(s):197 - 200
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (208 KB)

    The increased use of electronic circuitry in the present warfare scenario, demands sophisticated systems with higher density integrated circuits with more accuracy and compact size. As the sophistication/complexity of the system increases their "transient vulnerability" also goes up. Most of the semiconductor devices and other sensitive electronic equipment are easily damaged with transients of hi... View full abstract»

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  • Effect of power line filter on MOV clamping voltage

    Publication Year: 1999, Page(s):361 - 365
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    Metal oxide varistors (MOV) are popularly used to protect offline electronic equipment against power line transients. The offline switched mode power supplies (SMPS) use power line filters and MOVs in the front-end. The power line filter is used to reduce the conducted noise emission into the power line and the MOVs connected before this line filter and the MOVs connected before this line filter t... View full abstract»

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  • A review of TEC standard No.G/WLL-01/02 October '97 for digital wireless local loop system

    Publication Year: 1999, Page(s):300 - 305
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    The uptrend in the use of digital wireless communication system is well justified taking into account its inherent advantages. The Telecommunication Engineering Centre (TEC) has brought out a standard No.G/WLL-01/02 October 1997 on Digital Wireless Local Loop (WLL) system to provide two way communication for Department of Telecommunication (DoT) Customer Access Network. This standard lists the com... View full abstract»

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  • Noise reduction in computer process synchronisation

    Publication Year: 1999, Page(s):443 - 444
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (96 KB)

    This article describes how to gain a noise tolerable computer process synchronisation (e.g. a mutual exclusion problem in a real time system). The algorithm ensures the avoidance of busy wait for processes while sharing common resources such as disk drive, floating-point processor etc., without using any hardware fixes to control noise/EM disturbances. This software technique is a very useful tool... View full abstract»

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  • EMI control in high reliability space systems

    Publication Year: 1999, Page(s):1 - 6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    Modern launch vehicles, and spacecraft carry complex sophisticated onboard electronic systems. The special features of such systems are diversified functions, use of wide range of spectrum and high density packaging. These factors may give rise to interference problems which can result from delays to even total mission failures. Hence, ensuring electromagnetic compatibility (EMC) is an essential p... View full abstract»

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  • Design of futuristic electromagnetic conflict (EC) systems using soft systems modelling-system dynamics (SSM-SD) methodology

    Publication Year: 1999, Page(s):143 - 148
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    Most conventional approaches to electromagnetic conflict (EC) are "hard" in nature, which presume EC to be a static, predictable encounter. This forms the basis of the standalone design philosophy for EC equipment adopted to date, from which flow various EMI/EMC and MIL standards. This reductionist approach is doomed to failure in complex electromagnetic environments. The ultimate objective of EC ... View full abstract»

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  • EMC quality and its approach

    Publication Year: 1999, Page(s):168 - 171
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (160 KB)

    Everyday awareness on interference and quality is building up in the minds of the scientific/technical community. What is interference, how is it? Everything is being watched by the people on TVs, radios, now quality is realised by every one. Therefore utilisation factor is tending towards quality. Quality comes with strict vision at every stage of production. The design stage and qualification st... View full abstract»

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  • EMI immunity evaluation of an electro optical (laser) receiver

    Publication Year: 1999, Page(s):226 - 230
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (260 KB)

    An electro optical receiver intended for combat tank application, developed by IRDE, Deradhun, was subjected to a series of EMI/EMC evaluations at the test centre of CVRDE. This system briefly consists of a number of laser detector heads, a processing electronics box and a display unit. In the initial phase of the testing, the system failed in the immunity tests and also exhibited false triggering... View full abstract»

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  • Principal plane analyses of a monopole antenna on a rocket shaped structure using UTD

    Publication Year: 1999, Page(s):105 - 108
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (196 KB)

    An algorithm is developed based on uniform geometric theory of diffraction (UTD) for the analysis of an antenna mounted on a rocket shaped structure. Yu and Burnside (1972) elevation plane theory is extended, so that analysis can be done even if the source is located on other parts of the structure. The theory is validated with Ryan's (1972) result which is based on estimation of magnetic edge cur... View full abstract»

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  • Comparison method for validation of radiated emission test site

    Publication Year: 1999
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    Summary form only given. As per ANSI C 63.4-1992, a Radiated Emission Test Site (RETS) shall be considered acceptable for radiated electromagnetic field measurements if the measured Normalized Site Attenuation (NSA), are within +4 dB of the theoretical NSA for an ideal site for both horizontal and vertical polarizations. ANSI C 63.4-1992 allows +4 dB NSA tolerance, which includes antenna/instrumen... View full abstract»

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