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Proceedings of IEEE Symposium on Electromagnetic Compatibility最新文献

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Computational simulation of electromagnetic fields in a large-scale anechoic chamber 大型消声室电磁场的计算模拟
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385640
T. Propper, U. Daniel
{"title":"Computational simulation of electromagnetic fields in a large-scale anechoic chamber","authors":"T. Propper, U. Daniel","doi":"10.1109/ISEMC.1994.385640","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385640","url":null,"abstract":"Results of the computational simulation of electromagnetic fields in a large anechoic chamber are given. The approach is performed in time domain yielding the field dependence in time and space. From these data energy absorption in absorbers covering the walls as well as spectral data are derived by post-processing techniques. The numerical analysis is validated by comparison to measurement data.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129179234","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
Gasket shielding performance measurements obtained from four test techniques 通过四种测试技术获得垫片屏蔽性能测量结果
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385646
G. Freyer, J. Rowan, M. Hatfield
{"title":"Gasket shielding performance measurements obtained from four test techniques","authors":"G. Freyer, J. Rowan, M. Hatfield","doi":"10.1109/ISEMC.1994.385646","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385646","url":null,"abstract":"This paper addresses the issue of general comparability of gasket shielding performance data obtained with different test techniques. Four types of gaskets were evaluated using four test techniques. Data are presented for the frequency range 500 MHz-2 GHz which is within the generally accepted operating range of each of the four test techniques. The results indicate little consistency between the shielding performance of the four gaskets measured by the different techniques.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128511994","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
Spread spectrum clock generation for the reduction of radiated emissions 扩频时钟产生，以减少辐射排放
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385656
K. B. Hardin, J. T. Fessler, D. R. Bush
{"title":"Spread spectrum clock generation for the reduction of radiated emissions","authors":"K. B. Hardin, J. T. Fessler, D. R. Bush","doi":"10.1109/ISEMC.1994.385656","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385656","url":null,"abstract":"A method is presented for reducing the radiated emissions of an electronic device by frequency modulating (FM) the system clock. This method, referred to as spread spectrum clock generation, or SSCG, is applicable to most microprocessor based systems. A unique waveform used to frequency modulate a digital clock signal results in a spectrum with sideband harmonics that are nearly uniform in amplitude when measured with an EMI receiver. This has the effect of spreading the energy of a discrete frequency harmonic over a wider bandwidth, thereby reducing the amplitudes of the harmonics. Attenuation as high as 13 dB is presented using an experimental setup, an actual SSCG integrated circuit, and theoretically computed results.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121485990","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: 252
Specifying control of immunity to power line switching transients 指定对电力线开关瞬变的抗扰度控制
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385617
K. Javor
{"title":"Specifying control of immunity to power line switching transients","authors":"K. Javor","doi":"10.1109/ISEMC.1994.385617","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385617","url":null,"abstract":"Theoretical and experimental investigation reveals discrepancies between common spike immunity requirements and real switching transients. In particular, excessively low source impedance forces unnecessary over-design of EMI filters. A test method using a LISN (line impedance stabilisation network) and switched high current load is investigated as an alternative transient generator, and the effect on filter-design is noted. This test method has dual advantages: a) it simulates real world transients in both amplitude, duration and source impedance, and b) it uses commonly available EMI test equipment and requires no expensive single application acquisitions.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129989281","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
Ambient measurements in a semi-anechoic chamber 半消声室环境测量
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385673
J. Neal, K. Slattery, S.V. Smith
{"title":"Ambient measurements in a semi-anechoic chamber","authors":"J. Neal, K. Slattery, S.V. Smith","doi":"10.1109/ISEMC.1994.385673","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385673","url":null,"abstract":"In order to develop the automotive system control modules required in modern vehicles, an engineering department must have access to test and measurement facilities. These facilities must deliver, in a timely manner, data that truly reflects the spectral characteristics of the modules submitted for test. For that to happen, the engineers in charge of the test chambers must have a thorough understanding of their test systems. The foundation of that understanding must be familiarity with the ambient, or background noise, contained within each and every one of their test setups. This paper describes ambient measurements in a semi-anechoic chamber.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130560582","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
New developments in electrical shock safety 触电安全的新进展
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385691
J. Bridges
{"title":"New developments in electrical shock safety","authors":"J. Bridges","doi":"10.1109/ISEMC.1994.385691","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385691","url":null,"abstract":"New data has been developed on the level of shock current that a human can safely withstand. More accurate information has been developed on the impedance of the human body under shock conditions for different body shock-current pathways. An improved electrocution equation that relates a sure safe body current threshold with the amplitude, duration, and body current pathways has also been agreed upon. Safe limits for nonsinusoidal and higher frequency shock currents have also been noted. Information on how to mitigate and treat electrical burns and shock from high voltage lines is also becoming available.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134551039","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
Implementation of intelligent EMC analysis and design techniques 实现智能EMC分析与设计技术
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385621
V. Choo, A. Drozd, D. Dixon, N. Schade
{"title":"Implementation of intelligent EMC analysis and design techniques","authors":"V. Choo, A. Drozd, D. Dixon, N. Schade","doi":"10.1109/ISEMC.1994.385621","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385621","url":null,"abstract":"Prior research performed by the authors indicates that expert systems (ES) embedded with artificial intelligence (AI) constraints provide an excellent environment for establishing \"knowledge-enhanced\" problem-solving tools for EMC applications. This paper updates the findings of this original investigation into the feasibility of adapting expert systems for generalized EMC analysis and prediction. Specifically, the development and application of the Intelligent EMC Analysis and Design System (IEMCADS) using a proven expert system technology is presented in the context of the Navy's electromagnetic (EM) engineering (EMENG) Baseline II CAD thrust. EMENG is defined as the practical application of the principles of electromagnetics in ship design. IEMCADS is a computer-aided below decks room arrangement module that will be integrated into the EMENG system. EMENG will deliver enhanced capabilities for preventing electromagnetic interference (EMI) early in the ship design process. Specifically IEMCADS is a tool for simulating Navy vessel below-deck electromagnetic environment effects (E/sup 3/) for the purpose of optimizing layout of bounded below-deck regions that encompass racks/equipments, cables, and local magnetic energy sources.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133997707","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
Improving shielding effectiveness measurements with a spherical dipole antenna 改进球面偶极子天线的屏蔽效能测量
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385695
T. Mori, K. Shinozaki, Y. Kaneko
{"title":"Improving shielding effectiveness measurements with a spherical dipole antenna","authors":"T. Mori, K. Shinozaki, Y. Kaneko","doi":"10.1109/ISEMC.1994.385695","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385695","url":null,"abstract":"This paper describes the effect of reradiated waves from the enclosure under test on shielding effectiveness measurements in which an optically-linked spherical dipole antenna is placed inside the enclosure. The results show a remarkable dependency of the measured shielding effectiveness on the receiving antenna height due to a height pattern difference between the reference field and the leakage field from the enclosure. This dependency reduces the measurement repeatability. A max-hold method is proposed to eliminate this effect so as to produce repeatable measurements.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133983533","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: 6
A new approach to predict shielding properties of layered nonlinear sheets 一种预测层状非线性薄片屏蔽性能的新方法
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385687
S. Celozzi, M. D'amore
{"title":"A new approach to predict shielding properties of layered nonlinear sheets","authors":"S. Celozzi, M. D'amore","doi":"10.1109/ISEMC.1994.385687","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385687","url":null,"abstract":"A layered shield constituted by a first linear conductive sheet and a second nonlinear ferromagnetic sheet is considered. The field source is modelled by a transverse plane wave having a vertical polarization. The transmitted EM field is evaluated by developing a time-domain procedure. The linear sheet is represented by an equivalent field source and an equivalent input impedance, in analogy with the Thevenin approach in the transmission line theory. The analysis of the EM field propagation through the nonlinear layer is performed by using a numerical procedure based on the finite-element method. Shielding performances of different configurations including saturable ferromagnetic materials are presented.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132876200","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
A comparison of the isotropic broadband susceptibility test method and an RS103 test on an ARC-182 radio 各向同性宽带磁化率测试方法与RS103测试在ARC-182无线电上的比较
Proceedings of IEEE Symposium on Electromagnetic Compatibility Pub Date : 1994-08-22 DOI: 10.1109/ISEMC.1994.385685
D. Kempf
{"title":"A comparison of the isotropic broadband susceptibility test method and an RS103 test on an ARC-182 radio","authors":"D. Kempf","doi":"10.1109/ISEMC.1994.385685","DOIUrl":"https://doi.org/10.1109/ISEMC.1994.385685","url":null,"abstract":"The isotropic broadband susceptibility (IBS) test method is a new radiated susceptibility method. This method uses band limited white Gaussian noise which is upconverted by performing double sideband, suppressed carrier modulation with an RF or microwave signal. This method is performed in a high Q chamber so that the test sample is uniformly radiated on all sides by the field as in a mode-stirred chamber. Testing was performed on an ARC-182 radio with the IBS method in order to determine if the IBS method could find susceptibilities on equipment with extremely narrow failure bandwidths. The results of the testing were compared with the results of an RS103 test performed in accordance with MIL-STD-462D on the same ARC-182 radio. Testing was performed as an investigation to evaluate the method as a possible alternate method to RS103.<<ETX>>","PeriodicalId":154914,"journal":{"name":"Proceedings of IEEE Symposium on Electromagnetic Compatibility","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122527667","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: 7
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