2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)最新文献_第6页

The use of GTD method to evaluate the effect of finite metallic plane of OATS on NSA in UHF (300 /spl sim/ 1000MHz) region 利用GTD方法评价了OATS有限金属面对UHF (300 /spl sim/ 1000MHz)频段NSA的影响

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236607

Han-Chang Hsieh, K. Wang

引用次数: 0

A low cost conversion of semi-anechoic chamber to fully-anechoic chamber for RF antenna measurements 用于射频天线测量的半消声室到全消声室的低成本转换

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236696

C. Kinezos, V. Ungvichian

引用次数: 6

Concerns and approaches for accurate EMC simulation validation 精确电磁兼容仿真验证的关注点和方法

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236616

B. Archambeault

{"title":"Concerns and approaches for accurate EMC simulation validation","authors":"B. Archambeault","doi":"10.1109/ISEMC.2003.1236616","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236616","url":null,"abstract":"There are a number of different ways to validate EMI/EMC simulation. Measurements can be useful, but care is needed when using measurements, since the limitations of the measurement could affect the results significantly. Other options are available to help engineers increase the confidence is their model results. Engineers should validate their models to ensure the model's correctness, and to help understand the basic physics behind the model. Measurements can be used to validate modeling results, but extreme care must be used to ensure the model correctly simulates the measured situation. Omitting feed cables, shielding or ground reflections, or different measurement scan areas can dramatically change the results. An incorrect model result might be indicated when, in fact, the measured and modeled results are obtained for different situations, and should not be directly compared. Intermediate results can also be used to help increase the confidence in a model. Using the RF current distribution in model, or the animation in a time domain model, can help ensure the overall results are correct by determining the intermediate results are correct. These intermediate results have the added benefit of increasing the engineer's understanding of the underlying causes and effects of the overall problem.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134322466","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: 12

Double probe near field scanner, a new device for measurements in time domain 双探头近场扫描仪是一种新型的时域测量设备

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236569

T. Stadtler, L. Eifler, J. ter Haseborg

引用次数: 17

Asymmetry anomalies and resonances in hybrid LPDA-broadband dipole antennas

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236565

J. Mclean, R. Sutton

{"title":"Asymmetry anomalies and resonances in hybrid LPDA-broadband dipole antennas","authors":"J. Mclean, R. Sutton","doi":"10.1109/ISEMC.2003.1236565","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236565","url":null,"abstract":"Combinations of log-periodic dipole antennas (LPDAs) and broadband dipole elements have become ubiquitous as broadband measurement antennas for both emissions and immunity testing. It is well known that these combinations of LPDAs and broadband dipole elements can exhibit anomalous, frequency-dependent behavior especially when the broadband dipole elements are heavily end or top loaded and the antenna is operated in vertical polarization over a conducting ground plane according to S.J. Porter and A.C Marvin (1994). While there is more than one possible source for anomalous behavior in such antennas (as well as in LPDAs), we show here that in situations when the antenna is vertically polarized and situated over a ground plane the principal source of anomalies is related to the so-called asymmetry resonance found in E-plane arrays of LPDAs and LPDAs with inherent structural asymmetry according to Z. Chen (1999) and C.C. Bantin and K.G. Balmain (1970). The asymmetry resonance in LPDAs is associated with the existence of common mode (CM) current on the transmission line feed. We show, for the first time, that, to a limited extent, this anomalous behavior can be mitigated through the proper use of common mode chokes/baluns. Numerical simulations and experimental data are presented to verify both the presence of the externally-induced symmetry and the efficacy of several different balun/choke arrangements.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122363191","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

3D PEEC capacitance calculations 三维PEEC电容计算

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236677

J. Ekman, G. Antonini, A. Orlandi

引用次数: 17

The determination of the ultra-wideband and time-domain behavior of open area test sites using frequency domain measurements and the complex antenna factor concept 利用频域测量和复杂天线系数概念确定开放区域试验场的超宽带和时域特性

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236683

J. Mclean, R. Sutton

{"title":"The determination of the ultra-wideband and time-domain behavior of open area test sites using frequency domain measurements and the complex antenna factor concept","authors":"J. Mclean, R. Sutton","doi":"10.1109/ISEMC.2003.1236683","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236683","url":null,"abstract":"The ultra-wideband and time-domain characteristics of representative Open Area Test Sites (OATS) are determined numerically and experimentally. The analysis and measurements are performed in the frequency domain over a very wide bandwidth (several decades) using a set of calculable biconical antenna with known complex antenna factors (CAFs) according to S. Ishigami et al. (1996) and J. McLean et al. (2002). The principal advantage of the biconical antennas over typical UWB antennas, such as TEM horns, is that their radiation pattern including phase information is well-behaved and numerically calculable. The minimum scattering features of the radiation patterns of the calculable biconical antennas are crucial to correctly quantifying the reflection characteristics of an OATS. The normalized complex site transfer function according to J. McLea et al. (2002) is derived from complex 2-port measurements made with pairs of such antennas and an automatic vector network analyzer can then be used to derive the time-domain characteristics, e.g. the impulse response, of the site via Fourier transform techniques. Numerical simulations and experimental characterization of the time-domain response of representative OATs will be presented highlighting the non-ideal behavior of such sites including ground plane edge reflection/diffraction and imperfect specular reflection.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128465543","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

China's compliance management system 中国合规管理体系

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236572

G. Lin

引用次数: 2

Suppression effect of radiated emission from twisted pair wires with ferrite core 铁氧体铁芯双绞线辐射发射的抑制效果

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236639

T. Masashi, N. Kuwabara, S. Hamada, Y. Iwamoto, Y. Shimoshio

引用次数: 1

Common-mode and differential-mode analysis of common-mode chokes 共模扼流圈的共模和差模分析

2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446) Pub Date : 2003-10-14 DOI: 10.1109/ISEMC.2003.1236626

Zhe Li, D. Pommerenke, Y. Shimoshio

引用次数: 23