( )Engineering Information Abstracts Part I484

Keywords: Radiation; Heat sinks; Electromagnetic waves;Resonance; Finite difference method; Finite element method;Time domain analysis; Experiments

Title: MODELLING AS A TOOL FOR ANALYZING HAN-DLING EFFECTS IN STRUCTURED WIRE CABLING

( )Author s : Al-Asadi, M.M.; Wills, A.J.; Hodge, K.; Duffy, A.P.Source: Proceedings of the 1997 10th International Confer-ence on Electromagnetic Compatibility Sep 1-3 1997 n 445Warwick, UK. IEE Stevenage Engl. p 131-136 ISSN: 0537-9989CODEN: IECPB4Publication Year: 1997Abstract: This paper describes a modelling technique devel-oped to determine the handling effects on the performance ofa twisted pair cable working at high frequencies. The Tran-

Ž .smission Line Modelling TLM method is used here. Aformulation of 1D TLM model for the non-uniform, lossy,twisted pair cable has been developed. The model is used todetermine the step and pulse response of the cable underdifferent conditions of handling. Performance of both uniformand non-uniform cables are presented. Results show that theway cables are handled and the mechanism of production caneffect the parameters of cables and hence effects their timeand frequency responses. The method presented here allowsthe effects of individual factors to be analyzed. In EnglishŽ .Author abstract 5 Refs. EI Order Number: 98024083204Keywords: Electromagnetic compatibility; Mathematical mod-els; Transmission line theory; Telecommunication cables; Fre-quency response

Title: SIMULATION OF EMC TEST ENVIRONMENTS( )Author s : Argyri, V.; Christopoulos, C.

Source: Proceedings of the 1997 10th International Confer-ence on Electromagnetic Compatibility Sep 1-3 1997 n 445Warwick, UK. IEE Stevenage Engl. p 164-169 ISSN: 0537-9989CODEN: IECPB4Publication Year: 1997Abstract: This paper describes work aimed at a better under-standing of the sources of error in EMC tests taken partiallyanechoic screened rooms. Two aspects are covered namely thecharacterization of screened rooms by simulation using thenormalized site insertion loss, and, proximity effects on the

Ž .impedance of test antennas. In English Author abstract 7Refs. EI Order Number: 98024083210Keywords: Electromagnetic compatibility; Test facilities; Ane-choic chambers; Computer simulation; Electric impedance;Antennas; Transmission line theory

Title: ASPECTS OF GTEM TO OATS MEASUREMENTCORRELATION

( )Author s : Nothofer, A.; Marvin, A.C.Source: Proceedings of the 1997 10th International Confer-ence on Electromagnetic Compatibility Sep 1-3 1997 n 445Warwick, UK. IEE Stevenage Engl. p 170-174 ISSN: 0537-9989CODEN: IECPB4Publication Year: 1997

Abstract: The GTEM cell is a broadband transverse electro-magnetic waveguide working up to 1 Ghz. The OATS is thestandard environment for emission measurements. GTEM celldata have to be correlated to the OATS results. This paperdescribes two methods of performing this correlation andinvestigates their performance. Measurements in a GTEMcell and on an OATS have been taken and the results havebeen compared. Special attention is given to problems associ-ated with the reduction of the measurement effort. In EnglishŽ .Author abstract 7 Refs. EI Order Number: 98024083211Keywords: Electromagnetic compatibility; Waveguides; Elec-tromagnetic field measurement; Correlation methods

Title: NOVEL APPLICATION OF TRANSMISSION LINETHEORY IN EMC ASSESSMENT

( )Author s : Ting, C.M.; Jennings, P.A.Source: Proceedings of the 1997 10th International Confer-ence on Electromagnetic Compatibility Sep 1-3 1997 n 445Warwick, UK. IEE Stevenage Engl. p 181-186 ISSN: 0537-9989CODEN: IECPB4Publication Year: 1997Abstract: Products containing electronics must generally betested for electromagnetic susceptibility, as part of their EMCcertification process, at the end of their development cycle toensure that the test is representative of any future use of theproduct. However the earlier that the product as a whole, orthe electronic systems that form part of the product, can betested for susceptibility, the more benefit, in terms of costsavings, can be gained. In the automotive industry, system-leveltesting can be used successfully by using a statistical techniqueto correlate results with the mandatory vehicle-level sign-offtest. To test a whole vehicle early in its development wouldrequire the use of numerical electromagnetic modelling tech-niques. Due to lack of success in this area to date, there hasbeen very little usage for EMC evaluation purposes. Based ontransmission line theory and a similar statistical technique tothat used successfully in system-level testing, a method ispresented which could use real vehicle design data to generateboth guidelines for designers and data for use in system-leveltests. Initial results from a project to develop the method are

Ž .also presented. In English Author abstract 11 Refs. EIOrder Number: 98024083213Keywords: Electromagnetic compatibility; Transmission linetheory; Electronic equipment testing; Automobile electronicequipment; Statistical methods; Electromagnetic field effects

Title: UNCERTAINTIES IN EMC COMPLIANCE TESTING( )Author s : Goedbloed, Jasper J.

Source: Proceedings of the 1997 IEE Colloquium on theImplication of Measurement Uncertainties for EMC TestingJun 11 1997 n 116 London, UK. IEE Stevenage Engl. 10pISSN: 0963-3308 CODEN: DCILDNPublication Year: 1997Abstract: EMC compliance uncertainty is discussed in relationto the goals and basic properties of a standardized EMC