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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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Automatic component immunity testing 元件抗扰度自动测试
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853913
H. Kunz
{"title":"Automatic component immunity testing","authors":"H. Kunz","doi":"10.1109/CEEM.2000.853913","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853913","url":null,"abstract":"Schaffner EMC Ltd. has launched a series of test packages designed to test automotive components against the RF test specifications contained in ISO 11452 and SAE J1113. Each package is self-contained and complies with the highest test level specified in each standard. Significant cost savings can be made when testing to more than one standard as many of the items are common to all test packages. The article looks at the variety of RF test methods and parameters that are called up in the vehicle manufacturers' requirements, and shows how a test system can be put together using Schaffner's Profline 5000 systems to carry out just those tests that are needed, and to create reports in just the format asked for.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"9 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":"115132679","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
Computer-aided design of microstrip antenna array 微带天线阵列的计算机辅助设计
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853925
R. Zhang, D. Fang, Y.X. Sun, W.X. Sheng
{"title":"Computer-aided design of microstrip antenna array","authors":"R. Zhang, D. Fang, Y.X. Sun, W.X. Sheng","doi":"10.1109/CEEM.2000.853925","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853925","url":null,"abstract":"The design and manufacture of microstrip array antennas critically rely on computer-aided design (CAD) software tools. When the operating frequency is high, the full wave analysis is required. However, mutual coupling can be ignored for the majority of arrays. Therefore, the integrated analysis is not always necessary. In this paper, the full wave analysis is taken on the 2/spl times/2 subarray module and the loaded feed network separately. The CAD software tool is used in conjunction with the knowledge of basic array theory and physical insight of impedance matching through the Smith chart. An example of designing a Ku band compact microstrip array antenna is given to illustrate the above approach. The size in one dimension is reduced by a factor of 1.5 compared to the normal design. The experimental results agree with those of the theoretical prediction showing that there is no need for further experimental iteration.","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":"114927060","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
Lighting overvoltage protection connected to low-voltage power distribution systems according to EMC 按EMC标准连接低压配电系统的照明过压保护
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853965
L. Jike, Feng Jianmin
{"title":"Lighting overvoltage protection connected to low-voltage power distribution systems according to EMC","authors":"L. Jike, Feng Jianmin","doi":"10.1109/CEEM.2000.853965","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853965","url":null,"abstract":"The installation of SPDs (surge protective devices) in telecommunication plants is required according to the lighting protection zone (LPZ) concept, according to EMC, whenever an electrical line crosses the boundary between two zones. It determines the place for the installation of SPDs at the zone interfaces. In order to guarantee a safe protection of telecommunication systems, an energetic coordination method of SPDs among each other and between SPDs and the equipment to be protected is defined.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"109 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":"129884782","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
Comparison of backscattering from cylinders with different cross section 不同截面圆柱体后向散射的比较
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853933
Li Wei-ming, Gao Ben-qing
{"title":"Comparison of backscattering from cylinders with different cross section","authors":"Li Wei-ming, Gao Ben-qing","doi":"10.1109/CEEM.2000.853933","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853933","url":null,"abstract":"Shaping for targets is a main technology of radar cross section (RCS) reduction. In this paper the RCS of several different cross section cylinders are predicted, and the comparison between them is also presented. The conclusion from the comparison is helpful for very low observation designs, such as stealth aircraft.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"10 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":"132314825","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
Analysis of a thin-wire square-loop antenna using FDTD method 用时域有限差分法分析细线方环路天线
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853946
Li Chuanjun, Ma Shuangwu, Wei Zhongan, Gao You-gang
{"title":"Analysis of a thin-wire square-loop antenna using FDTD method","authors":"Li Chuanjun, Ma Shuangwu, Wei Zhongan, Gao You-gang","doi":"10.1109/CEEM.2000.853946","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853946","url":null,"abstract":"In this paper, the input impedance of a thin-wire square-loop antenna with the different wire-radius is obtained using the FDTD method, where Gaussian type pulse and sinusoidal wave are used as the excitation source. The PML absorbing boundary condition and the infinitesimally small feeding gap have been applied to calculate the input impedance of a thin-wire square-loop antenna. The calculations of input impedance of thin-wire square-loop antenna are in good agreement with previous MoM results.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"52 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":"126853766","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
Analysis of the earth potential problems of the electrified railway 电气化铁路接地电位问题分析
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853937
Chen Jiancheng
{"title":"Analysis of the earth potential problems of the electrified railway","authors":"Chen Jiancheng","doi":"10.1109/CEEM.2000.853937","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853937","url":null,"abstract":"The traction return circuit of the electrified railway is usually that the overhead contact line system (OHL) transmits current to the electric locomotives, then the current returns to the traction substations by the rails and earth. That is, it belongs to the unbalanced power-supply system that uses the rails and earth as return conductor. Near the point of earth that current enters into the rails, it causes the earth potential to rise, and it cause dangerous impact or interference impact on the earthed telecommunication equipment and lines by the way of earth resistance coupling. Earth is assumed to be a homogeneous medium with an infinite plane in the existing theoretical calculation of earth potential. However, most of geology in nature where railway passes belongs to irregular nonhomogeneous medium. It raises a problem for theoretically calculating the earth potential. Furthermore, during the processes of survey and design of the electrified railway in the past, many technicians cited the earth resistivity that can be used for calculating mutual inductance coefficient to the formulas of earth potential. This method is wrong for calculating the earth potential in the nonhomogeneous medium. It may cause multiple error for calculating the earth potential and slip in adopting the protective measures for the earth potential. In view of the above-mentioned circumstances, this paper analyzes the characteristics of the interference sources and impact ways, and presents a new method for solving the problem of calculating the earth potential in the nonhomogeneous medium.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"28 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":"125200409","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
The CMA adaptive array for CDMA cellular communication systems 用于CDMA蜂窝通信系统的CMA自适应阵列
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853922
Zhou Zhimin, Qi Ianfen
{"title":"The CMA adaptive array for CDMA cellular communication systems","authors":"Zhou Zhimin, Qi Ianfen","doi":"10.1109/CEEM.2000.853922","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853922","url":null,"abstract":"The use of a constant modulus algorithm (CMA) adaptive antenna array at the base-station site to suppress interference and increase the user capacity of a CDMA cellular system is proposed. The improvement in performance is quantified by comparison with the omnidirectional antenna system using realistic simulation.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"20 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":"122537001","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
On integral computation of Bessel function for 3-D electromagnetic scattering computation in the earth half-space 地球半空间三维电磁散射计算中贝塞尔函数的积分计算
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853894
Jia-lin Cao, Guorui Chen
{"title":"On integral computation of Bessel function for 3-D electromagnetic scattering computation in the earth half-space","authors":"Jia-lin Cao, Guorui Chen","doi":"10.1109/CEEM.2000.853894","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853894","url":null,"abstract":"Using the integral equation method, the integral computation of the primary field of the 3-D electromagnetic scattering problem in the earth half space is an integral of double Bessel functions. The dipole model is usually taken for its numerical computation. The integral with integrand of double Bessel function is simplified to the integral of single Bessel function and is computed with the Hankel transformation. In this paper. A method of finding the zero points and dividing the intervals is used to compute the integral of double Bessel function. Taking different integral parameters, the integral results of double Bessel function are compared with those of single Bessel function with Hankel transformation. The errors of these two algorithms are discussed.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"177 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":"132746951","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
Electromagnetic compatibility analysis of GPS receiver GPS接收机电磁兼容性分析
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853982
Wang Zhong, Ren Su-ping
{"title":"Electromagnetic compatibility analysis of GPS receiver","authors":"Wang Zhong, Ren Su-ping","doi":"10.1109/CEEM.2000.853982","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853982","url":null,"abstract":"Advanced digital GPS receiver antijam design techniques are stated, and a technique for interference monitoring and four interference mitigation techniques are described. The effects of interference are analyzed. GPS receiver tracking loop thresholds and tracking jitters are presented. The functional relation of jammer transmission power and it's effective range is presented. The jammer margin is defined.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"1 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":"133825426","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 model of electromagnetic field through borders of different mediums 电磁场通过不同介质边界的模型
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853901
Sun Yi, An Hongjie, L. Ping
{"title":"The model of electromagnetic field through borders of different mediums","authors":"Sun Yi, An Hongjie, L. Ping","doi":"10.1109/CEEM.2000.853901","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853901","url":null,"abstract":"Electromagnetic interference passes through different mediums and different borders to receivers in the form of electric field, magnetic field or electromagnetic field. Therefore, in order to compute interference surplus, especially the results of electric field, it is necessary to use specific border conditions. That is to say, using the given border conditions and natural border conditions can decide the constants in general outcomes of differential equations, then turning them into usable specific results. In the paper, rules of border conditions of vector fields can be induced through using the integrals of vector fields along a closed curve and closed curving surfaces.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"36 3 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":"123511975","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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