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Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)最新文献

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Common-mode currents and radiation from PCBNGP PCBNGP的共模电流和辐射
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853909
T. H. Ooi, S. Y. Tan, Huadong Li
{"title":"Common-mode currents and radiation from PCBNGP","authors":"T. H. Ooi, S. Y. Tan, Huadong Li","doi":"10.1109/CEEM.2000.853909","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853909","url":null,"abstract":"In this paper the closed-form expression for the common-mode current on printed circuit board with narrow ground plane (PCBNGP) is derived. The derivation is based on a three-conductor transmission line model. The common-mode and differential-mode resonances affecting common-mode currents and radiation are studied.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134415104","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
Counterpoise in mobile radiotelephony 移动无线电话的平衡
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853902
H. Trzaska
{"title":"Counterpoise in mobile radiotelephony","authors":"H. Trzaska","doi":"10.1109/CEEM.2000.853902","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853902","url":null,"abstract":"The paper deals with the decrease of the radiation efficiency of hand-held devices due to energy losses in the operator's hand and mismatching of the device's antenna input impedance close to the operator's head. A set for model studies is presented. Comments to necessary modifications of protection standards are formulated. Some mysterious protection means are introduced.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123228971","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
A brief introduction of "technique regulation for protection of electro-static discharge" 《静电放电保护技术规程》简介
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853968
Teng Jin-Qi, Sun Zhen-guo, Yun Li-jun, Ma Nai-xiang, Zhou Pei-bai
{"title":"A brief introduction of \"technique regulation for protection of electro-static discharge\"","authors":"Teng Jin-Qi, Sun Zhen-guo, Yun Li-jun, Ma Nai-xiang, Zhou Pei-bai","doi":"10.1109/CEEM.2000.853968","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853968","url":null,"abstract":"Electrostatic discharge is one of the most serious interference sources for electronic elements and devices. In the 21 century, the techniques of computer science, automatic control, telecommunication and micro electronics will group up very quickly. All these techniques are concentrated into a large building and/or individual workshop. For satisfying this situation, the Shanghai Construction Committee organized the interrelated institutes, companies and some experts to establish this regulation. It will be executed in the early 2000s. The essential contents of the regulation cover classification of the work environment for electrostatic protection, grounding technique, and material properties.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126848333","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
Study of lightning electromagnetic field distribution inside and outside the microwave communication building 微波通信大楼内外雷电电磁场分布研究
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853959
L. Dichen, Liu Qiuliang, Deng Suqiao
{"title":"Study of lightning electromagnetic field distribution inside and outside the microwave communication building","authors":"L. Dichen, Liu Qiuliang, Deng Suqiao","doi":"10.1109/CEEM.2000.853959","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853959","url":null,"abstract":"In the paper, the finite-difference expression is proposed to calculate the distribution of lightning electromagnetic field inside and outside the microwave station. The mathematical model is built and the initial condition and boundary condition are determined. The calculation method of variable step-size and data temporary storage increase by step is presented. It has solved the problem of abrupt change in medium, which is difficult to solve by an analytical method. The distribution and magnitude of the electromagnetic field inside and outside the microwave station are obtained. The calculation result of the electromagnetic field distribution in free space within the range of lightning stroke is close to the result calculated M.A. Uman.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115463134","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
The evaluation of the electromagnetic emission from high-speed railway by pantograph and network parameters 基于受电弓和网络参数的高速铁路电磁发射评价
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853949
Zhang Chen, Zhao Jian, Hu Jidong
{"title":"The evaluation of the electromagnetic emission from high-speed railway by pantograph and network parameters","authors":"Zhang Chen, Zhao Jian, Hu Jidong","doi":"10.1109/CEEM.2000.853949","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853949","url":null,"abstract":"This paper gives the curves of pantograph and network parameters vs. speed by calculation with perfected typical mathematical model first, then predicts the electromagnetic emission level of Jing-hu high-speed electric railway according to the interrelationship between the electromagnetic emission and the parameters of the pantographs and networks.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"112 17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120851890","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
Full-wave analysis of the EMP induced current in cables near the ground 近地电缆EMP感应电流的全波分析
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853966
Chen Bin, Wang Tingyong, Gao Cheng, Z. Bi-hua, Shi Lihua
{"title":"Full-wave analysis of the EMP induced current in cables near the ground","authors":"Chen Bin, Wang Tingyong, Gao Cheng, Z. Bi-hua, Shi Lihua","doi":"10.1109/CEEM.2000.853966","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853966","url":null,"abstract":"The finite-difference time-domain (FD-TD) method is applied to the analysis of the EMP induced cortical current in coaxial cables near the ground in this paper. This method is a kind of full-wave analysis method. Not only transmission line current but also aerial current is considered in the calculation of induced current. This method is used to analyze all kinds of cortical induced current. The result in this paper is reasonable compared to relative data.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125263861","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
EMI resulting from a signal via transition through DC power bus-effectiveness of focal SMT decoupling 信号经直流电源总线转换产生的电磁干扰-焦点SMT去耦的有效性
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853908
W. Cui, X. Ye, B. Archambeault, D. White, Min Li, J. Drewniak
{"title":"EMI resulting from a signal via transition through DC power bus-effectiveness of focal SMT decoupling","authors":"W. Cui, X. Ye, B. Archambeault, D. White, Min Li, J. Drewniak","doi":"10.1109/CEEM.2000.853908","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853908","url":null,"abstract":"Signal vias are commonly used in multilayer printed circuit board (PCB) design. For a signal via transitioning through the internal power and ground planes, the return current has to jump from one reference plane to another reference plane. The discontinuity of the return current at the via excites the power and ground planes, and results in power bus noise, and can produce an EMI problem as well. Numerical methods, such as finite-difference time-domain (FDTD), moment methods (MoM), and partial element equivalent circuit (PEEC), were employed herein to study this problem. The modeled results were supported by the measurements. In addition, the EMI mitigation approach of adding decoupling capacitors was investigated with the FDTD method.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123599222","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
Power frequency magnetic fields of medium voltage switchgear. A concept for evaluating the field strengths under an exposure limit point of view 中压开关柜工频磁场。在暴露极限下评估场强的概念
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853938
B. Jaekel
{"title":"Power frequency magnetic fields of medium voltage switchgear. A concept for evaluating the field strengths under an exposure limit point of view","authors":"B. Jaekel","doi":"10.1109/CEEM.2000.853938","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853938","url":null,"abstract":"Power frequency magnetic fields caused by medium voltage switchgear might disturb sensitive equipment such as video display units or might even conflict with exposure limits concerning people living or working near such installations. In order to prevent possible influences or adverse effects the knowledge of the magnetic field levels produced by the switchgear is necessary. A suitable concept to get magnetic field distributions around substations is described. This concept considers the emissions of switchgear from a general point of view and avoids investigating actual substations in detail. Rather it allows derivation of the field strength levels from the data of the switchgear type.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125973","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
Analysis of the emittivity of a chirally shielded cable 手性屏蔽电缆的发射率分析
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853960
D. Bellan, M. Floreani, R. Zich
{"title":"Analysis of the emittivity of a chirally shielded cable","authors":"D. Bellan, M. Floreani, R. Zich","doi":"10.1109/CEEM.2000.853960","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853960","url":null,"abstract":"The analysis of the emittivity of a chirally shielded cable is presented. An E-polarized cylindrical wave, coming from the centre of the cylinder, incides onto the chiral medium resetting in a coupling between TM/sup z/ and TE/sup z/ waves. The analytical expression of the shielding effectiveness in order to evaluate the emittivity has been derived and validated by numerical simulations.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"463 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132312243","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
Nonuniform potential distribution caused by lightning 雷电引起的不均匀电位分布
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853963
Jin Yingnan, Zhou Peibai, Ma Naixiang, Zhu Zishu
{"title":"Nonuniform potential distribution caused by lightning","authors":"Jin Yingnan, Zhou Peibai, Ma Naixiang, Zhu Zishu","doi":"10.1109/CEEM.2000.853963","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853963","url":null,"abstract":"One of the serious sources of electromagnetic interference is lightning. In modern intellectual faculties building, the electronic equipment system is very easily damaged by lightning. The calculation results show that the high frequency components of the potential difference along each floor in a building are quite different under a lightning strike on the building. It may cause the grounding potential to rise, damaging the electronic devices.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123317031","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
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