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1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)最新文献

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Antenna pattern effects in normalized site attenuation 归一化站点衰减中的天线方向图效应
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.810193
R. McConnell
{"title":"Antenna pattern effects in normalized site attenuation","authors":"R. McConnell","doi":"10.1109/ISEMC.1999.810193","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810193","url":null,"abstract":"In the ANSI C63.4 development of normalized site attenuation (NSA) for vertical polarization the E-field sine pattern generated by short dipoles was used to account for the additional attenuation that occurs as a function of the antenna patterns. A pattern dependent NSA equation is developed incorporating antenna pattern factors for any types of antennas for which mathematical expressions of the patterns exist. For resonant dipoles, biconicals and log-periodics the decibel differences from the existing standard have been found to be small, leading to increased confidence in the utility of the present standard.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121513933","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
Modeling limits of the FDTD in EMC 电磁兼容中FDTD的建模限制
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812953
F. Tristant, F. Torrès, A. Reineix, B. Jecko
{"title":"Modeling limits of the FDTD in EMC","authors":"F. Tristant, F. Torrès, A. Reineix, B. Jecko","doi":"10.1109/ISEMC.1999.812953","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812953","url":null,"abstract":"This paper describes the insightful and critical analysis of the validation methods used to check the results obtained with the finite difference time domain (FDTD) method in EMC modeling. The paper investigates both the limitations of this method and the solutions used to overcome these drawbacks.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306494","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
Characterization of large TEM cells and their interaction with large DUT for vehicle immunity testing and antenna factor determination 大型TEM细胞的特性及其与大型DUT的相互作用，用于车辆抗扰度测试和天线因子测定
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812903
Ronald L. Monahan, Terry M. North, Andrew
{"title":"Characterization of large TEM cells and their interaction with large DUT for vehicle immunity testing and antenna factor determination","authors":"Ronald L. Monahan, Terry M. North, Andrew","doi":"10.1109/ISEMC.1999.812903","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812903","url":null,"abstract":"Transverse electromagnetic mode (TEM) cell testing of vehicles using a practical sized cell necessitates accommodation of a test object, the vehicle under test (DUT), higher than one third of the floor to septum height. Testing may be for immunity or for the determination of the vehicle's antenna factor in the 150 kHz to 6 MHz frequency range. For this frequency range the environmental E-field is vertically polarized as is the TEM cell field, therefore the TEM cell should be useful for vehicle antenna factor measurements. A method is presented for overcoming the one third height 'rule-of-thumb' for TEM cells which allows useful antenna factor measurements and an estimation of the field the vehicle is subjected to in immunity tests. The DUT causes an impedance discontinuity and the estimation of the corrected field strength, based on the decrease of the 'free space' between the septum and the enclosure, is evaluated.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115907382","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: 8
A geometric scattering expansion of the current on conducting surfaces and transmission line structures 电流在导电表面和传输线结构上的几何散射扩展
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.810110
F. Gronwald, J. Nitsch
{"title":"A geometric scattering expansion of the current on conducting surfaces and transmission line structures","authors":"F. Gronwald, J. Nitsch","doi":"10.1109/ISEMC.1999.810110","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810110","url":null,"abstract":"The coupling of electromagnetic fields into complex electronic systems plays an important role in EMC. Especially multiconductor transmission lines (MTLs) transport voltage- and current-perturbations to the entrance of sensitive devices. We derive a perturbative construction scheme for the current on oneand two-dimensional conducting geometries. These conductors can either be in the presence of electromagnetic sources or also be part of the source itself. The current is expressed in terms of a scattering expansion which turns out to be an expansion in the curvature of the conducting geometries. This geometric formalism allows one to perturbatively determine characteristic parameters of arbitrary transmission line structures.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"21 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131451123","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
Comparing different measurement approaches in a mode-stirred chamber 模态搅拌室中不同测量方法的比较
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.810182
M. Petirsch, W. Kurner, I. Sotriffer, A. Schwab
{"title":"Comparing different measurement approaches in a mode-stirred chamber","authors":"M. Petirsch, W. Kurner, I. Sotriffer, A. Schwab","doi":"10.1109/ISEMC.1999.810182","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810182","url":null,"abstract":"This paper presents the use of a mode-stirred chamber (MSC) for electromagnetic susceptibility (EMS) measurement. The distribution of the field inside the chamber is shown as well as the achievable degree of field homogeneity. The results of the susceptibility measurement by different approaches are compared. The approaches of testing include the mode-tuned and the mode-stirred operation of the MSC and measurements in an anechoic chamber as a reference. A comparison of the results demonstrates a correlation between these approaches.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130017677","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
Directivity of equipment and its effect on testing in mode-stirred and anechoic chamber 设备指向性及其对搅拌模室和消声室测试的影响
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812860
L. Jansson, M. Backstrom
{"title":"Directivity of equipment and its effect on testing in mode-stirred and anechoic chamber","authors":"L. Jansson, M. Backstrom","doi":"10.1109/ISEMC.1999.812860","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812860","url":null,"abstract":"If radiated susceptibility testing in a mode-stirred chamber (MSC) is used to test equipment that in its real operation may become irradiated by plane waves it is necessary to increase the test level, i.e. add a margin. In order to find out typical magnitudes of this margin coupling measurements to the interior of several objects have been carried out both in mode-stirred and anechoic chamber (AC). The results show that the maximum coupling in the anechoic chamber is 10-15 dB higher than the coupling measured in the mode-stirred chamber. Also, the assumption of isotropic field conditions in the mode-stirred chamber is strongly supported by the measurements. Finally, it is shown that the statistical distribution of the equipment's internal field when rotating the stirrer in an MSC is not the same as when the angle of incidence is varied in an AC.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139912","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: 49
Transient interaction analysis in tracked vehicle 履带车辆瞬态相互作用分析
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812942
G. Deb
{"title":"Transient interaction analysis in tracked vehicle","authors":"G. Deb","doi":"10.1109/ISEMC.1999.812942","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812942","url":null,"abstract":"Large amplitude and fast rise time transient effect is of great-concern to electronic systems. In this paper various coupling mechanisms of such a transient field in a tracked vehicle platform are discussed. Efforts are made to mathematically model some of the coupling processes, predict and analyse the possible interaction levels inside the vehicle and also to evaluate the coupling of transients through the communication antenna and the gun of the vehicle. The first level of essential transient protection mechanism for reduction of such high level transient fields has also been discussed. The exceptional contribution to the tracked vehicle's EMC design implementation is acknowledged when it worked under various kinds of transients in India.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134578685","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 compatibility in hospital corridors 医院走廊的电磁兼容性
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812908
D. Davis, B. Segal, A. Cinquino, K. Hoege, R. Mastrocola, T. Pavlasek
{"title":"Electromagnetic compatibility in hospital corridors","authors":"D. Davis, B. Segal, A. Cinquino, K. Hoege, R. Mastrocola, T. Pavlasek","doi":"10.1109/ISEMC.1999.812908","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812908","url":null,"abstract":"The proposal that electromagnetic compatibility (EMC) in healthcare be fostered by using a free-space minimal-separation criterion between radio frequency (RF) sources of given power and medical devices of given immunity is evaluated. Electric fields within various corridors of a hospital were measured and the residuals of the fields from both slow-fade characteristics, and from free-space field predictions were computed. Measured fields tended to be similar to free-space predictions, except (1) within regions closer than about 7 m from the source, (2) within a below ground corridor, and (3) within a wood-furniture-filled corridor. Generally, the results supported the usage of the free-space minimal-separations, except in below ground corridors.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"53 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132640297","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: 9
The multilevel fast multipole algorithm for electromagnetic compatibility analysis 电磁兼容性分析的多级快速多极算法
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.810130
H. Chao
{"title":"The multilevel fast multipole algorithm for electromagnetic compatibility analysis","authors":"H. Chao","doi":"10.1109/ISEMC.1999.810130","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810130","url":null,"abstract":"This paper studies the application of the multilevel fast multipole algorithm (MLFMA) to the analysis of electromagnetic compatibility (EMC) problems. For structures composed of complex surfaces, wires, and interconnections of the latter, the MLFMA achieves the same accuracy as the classical method of moments, but requires far less simulation time and memory resources. In this paper, the MLFMA is used to predict the input impedance of a modules-on-backplane structure. Experimental results are used to validate the algorithm. Comparison with other numerical techniques (the classical method of moments, the finite element method, and the finite-difference time-domain method) shows that the MLFMA is the most effective technique in solving large-scale EMC problems.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131025197","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: 5
An analytical and experimental comparison of radiated emissions test facilities 辐射发射试验装置的分析与实验比较
1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI: 10.1109/ISEMC.1999.812904
C. Vitek, E. Blankenship
{"title":"An analytical and experimental comparison of radiated emissions test facilities","authors":"C. Vitek, E. Blankenship","doi":"10.1109/ISEMC.1999.812904","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812904","url":null,"abstract":"Radiated emissions measurements are usually required to be performed on a facility that meets the normalized site attenuation (NSA) and receive antenna scan height requirements of ANSI C63.4 and CISPR 22. However, often preliminary measurements for the purpose of frequency identification or engineering and troubleshooting are performed at fixed scan height indoor semi-anechoic facilities or free space facilities. Free Space facilities, in particular, have been put forth as a possible future alternative standard to open area test site (OATS) for certification measurements. An analytical and experimental comparison of the relative merits of these different types of facilities is presented.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132445358","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
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