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Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)最新文献

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Assessment of conductive gaskets using X-ray fluorescence technique 用x射线荧光技术评价导电衬垫
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669746
B. Prakash, L. Dinesh Roy
{"title":"Assessment of conductive gaskets using X-ray fluorescence technique","authors":"B. Prakash, L. Dinesh Roy","doi":"10.1109/ICEMIC.1997.669746","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669746","url":null,"abstract":"EMI control is a very crucial step in ensuring a satisfactory environment for the coexistence of different types of electrical/electronic equipment. At the equipment design stage, EMI control methods, such as grounding, bonding, filtering and shielding are used for achieving EMC. Conductive gaskets are used to reduce RF leakage at seams and joints, such as front panel mountings and cabinets etc. The shielding effectiveness (SE) of the gasket is a critical parameter which determines the adequacy for use in equipment. This paper describes the use of an indirect method namely the XRF technique, for determining the adequacy of conductive gaskets for use in equipment to reduce radiation related EMI problems.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114252982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Shaped beam radiation pattern synthesis using genetic algorithm 基于遗传算法的异形束辐射方向图合成
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669793
N. Sarma, R. Chandrasekharam
{"title":"Shaped beam radiation pattern synthesis using genetic algorithm","authors":"N. Sarma, R. Chandrasekharam","doi":"10.1109/ICEMIC.1997.669793","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669793","url":null,"abstract":"Beam shaping of array antennas has attracted the attention of many researchers for many years because of its primary application in tracking and ground mapping radars, etc. Several methods have been suggested by them depending on the shapes desired and computational power available. A new approach i.e. using a genetic algorithm approach is adopted to synthesize arrays to produce desired beam shapes. This approach has the advantage that several design criteria required to comply with EMC standards can be met in one synthesis procedure simultaneously. Simulation results for a particular case have been presented.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"367 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123317860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparative studies of near field distributions of solid and hollow dielectric diagonal horn antennas 固体与空心介质对角喇叭天线近场分布的比较研究
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669806
V. Tiwari, T. Tiwari, R. Jha
{"title":"Comparative studies of near field distributions of solid and hollow dielectric diagonal horn antennas","authors":"V. Tiwari, T. Tiwari, R. Jha","doi":"10.1109/ICEMIC.1997.669806","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669806","url":null,"abstract":"Near field distributions of solid and hollow dielectric diagonal horn antennas have been studied theoretically and experimentally. Solutions of the Helmholz's equation are obtained for TE to x and TE to y modes using separation of variables technique for the horn. Transcendental equations for the transverse components of propagation constants are obtained by applying proper boundary conditions. These transcendental equations are solved for the transverse propagation constants for the fundamental mode for different horns each of axial length=12.8 cm and flare angle=8.5/spl deg/ and throat dimension=4.7 cm at the frequency of 9.418 GHz in X-band. The theoretical aperture field distributions obtained for H/sub 11//sup x/ and H/sub 11//sup y/ modes propagating in these antennas are compared with corresponding experimental ones. Comparative studies are also done for aperture field distribution of solid and hollow dielectric diagonal horn antennas.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132377444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
S-LINE: a newly developed TEM waveguide for EMC measurements S-LINE:一种用于电磁兼容测量的新开发的TEM波导
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669751
K.-D. Gopel
{"title":"S-LINE: a newly developed TEM waveguide for EMC measurements","authors":"K.-D. Gopel","doi":"10.1109/ICEMIC.1997.669751","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669751","url":null,"abstract":"Transverse electromagnetic (TEM) waveguides are used in EMC measurements for immunity and emission tests. The paper describes a newly developed TEM waveguide, the S-LINE. Test cells known so far can be regarded as widened unsymmetrical coaxial lines with the EUT subjected to the electromagnetic field between the inner and outer conductor. By contrast the S-LINE essentially consists of symmetrical two-wire TEM lines that are arranged in an electrically shielded enclosure. By generating the field with a symmetrical line the cell offers a larger test volume than that of conventional cells. The S-LINE can be employed in the frequency range 150 kHz to 1 GHz and can used for precertification emission and immunity testing during the development of a product.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"27 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130453104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Realization of amplitude distribution function from slot-fed waveguide junctions for desired beams 从狭缝馈电波导结实现期望光束的振幅分布函数
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669789
P. Rao, G. Raju, C.S. Gutti, G.M. Rao
{"title":"Realization of amplitude distribution function from slot-fed waveguide junctions for desired beams","authors":"P. Rao, G. Raju, C.S. Gutti, G.M. Rao","doi":"10.1109/ICEMIC.1997.669789","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669789","url":null,"abstract":"Low sidelobe radiation patterns are required to prevent EMI in the receiving systems. Such patterns are generated with the use of highly tapered amplitude distributions. In order to realize a defined taper an array of waveguide junctions is designed. The junctions considered in the array are suitable for producing the desired polarized fields without creating EMI problems.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124246941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electromagnetic interference on a transponder due to UHF set onboard a helicopter-a case study 由于直升机上的超高频设置对应答器的电磁干扰-一个案例研究
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669818
S. Ramsamy, C.G. Balaji, M. Gangadhara, S. Gayen
{"title":"Electromagnetic interference on a transponder due to UHF set onboard a helicopter-a case study","authors":"S. Ramsamy, C.G. Balaji, M. Gangadhara, S. Gayen","doi":"10.1109/ICEMIC.1997.669818","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669818","url":null,"abstract":"A transponder was tested for its performance with its interrogator. The transponder and the monitoring equipment were mounted in a helicopter. The radio transmission (RT) set of the helicopter interfered with the performance of the monitoring equipment. This paper is a case study in identifying the problem and solving it. Also guidelines are suggested which if adopted would minimise the interference effect in such applications.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128299848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A review of EMI shielding and suppression materials 电磁干扰屏蔽和抑制材料的研究进展
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669850
Devender, S. Ramasamy
{"title":"A review of EMI shielding and suppression materials","authors":"Devender, S. Ramasamy","doi":"10.1109/ICEMIC.1997.669850","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669850","url":null,"abstract":"The effect of growth of the electronics industry and the widespread use of electronic equipment in communications, computation, automation, biomedicine, space and other areas has led to many electromagnetic interference (EMI) problems for the designers as their systems/subsystems operate in close proximity. It is likely to become more severe in the future, unless designers follow EMI control methodology/techniques to meet the EMC requirements during the design stage itself. The elimination or suppression of EMI should be a prime objective of the designer. In this paper the authors have made an attempt to present technical data/details of various EMI suppression materials/devices available in the market and simplified the job of designers in verifying different catalogues which may be directly applied to the problem and harden the system/subsystem in compliance with EMC standards. As the design and development proceeds, the number of available noise reduction techniques also decreases and at the same time the cost of the mitigating noise goes up. Hence selecting the right component at the right time is essential. This paper gives a quick reference to the designer to reduce the noise at source level in the system during the design and development stages by choosing the appropriate component/device and fixing it correctly into the problem.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128728352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 38
Error free EMI measurements and its concepts 无误差电磁干扰测量及其概念
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669752
K. R. Rajeswara Rao, K. Suryanarayana
{"title":"Error free EMI measurements and its concepts","authors":"K. R. Rajeswara Rao, K. Suryanarayana","doi":"10.1109/ICEMIC.1997.669752","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669752","url":null,"abstract":"Error free EMI measurements play an integrating role between theoretical concepts and practical approaches/concepts. Theoretical concepts in EMI/EMC do not provide a sufficient database for scientists/engineers. It is also essential to have a knowledge base of the correct method of carrying out EMI/EMC measurements. It is very important to identify the level of EMI compatibility of the simulation and peripherals of the unit under test. In this paper the authors bring out some of the practical concepts of error free measurements and the compatibility of systems/subsystems, and also bring out practical examples of committed mistakes/errors during the EMI/EMC performance evaluation.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128728360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Near field radiation pattern analysis of on-aircraft antennas using UTD 基于UTD的机载天线近场辐射方向图分析
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669792
A. D. Sarma, N.S. Murthy Sarma
{"title":"Near field radiation pattern analysis of on-aircraft antennas using UTD","authors":"A. D. Sarma, N.S. Murthy Sarma","doi":"10.1109/ICEMIC.1997.669792","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669792","url":null,"abstract":"This paper describes the roll plane analysis necessary for predicting the near field radiation pattern of a monopole antenna mounted on the fuselage of an aircraft. Initially the near field pattern around a convex cylinder is estimated based on UTD theory. This solution is used as source field for further analysis in obtaining the pattern when the plates are also attached. The results could be useful for estimating the EMI due to antenna on the electronics circuits inside the aircraft.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123262885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Low EMI design of a microprocessor based password access control system-a case study 基于微处理器的密码访问控制系统的低电磁干扰设计——一个案例研究
Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487) Pub Date : 1997-12-03 DOI: 10.1109/ICEMIC.1997.669820
S. Kundu, G. Deb, S. Sengupta, U. K. Saha
{"title":"Low EMI design of a microprocessor based password access control system-a case study","authors":"S. Kundu, G. Deb, S. Sengupta, U. K. Saha","doi":"10.1109/ICEMIC.1997.669820","DOIUrl":"https://doi.org/10.1109/ICEMIC.1997.669820","url":null,"abstract":"For obtaining an ISO 9000 quality system, EMC is essential for today's equipment manufacturers. This paper discusses the EMI in the printed circuit board level of an \"access control system\" consisting mainly of a microprocessor and its logic circuits and the switched mode power supply. This paper also addresses the fact that in reality cables or PCB tracks are good transmitting and receiving antennas and hence aspects of PCB grounding and shielding are considered. The paper also deals with some aspects of EMC compliance testing at the equipment level, both for conducted and radiated emissions and results are presented graphically.","PeriodicalId":444507,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility '99 (IEEE Cat. No. 99TH 8487)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121005527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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