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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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Representations of electric field between two inclined conductor boards 两个倾斜导体板之间的电场表示
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853899
L. Ren, Z. Chen
{"title":"Representations of electric field between two inclined conductor boards","authors":"L. Ren, Z. Chen","doi":"10.1109/CEEM.2000.853899","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853899","url":null,"abstract":"The formulation E=U/d is traditionally used in the measurement of a GTEM cell, which is derived from two parallel boards capacitor. However, the basic structure of a GTEM cell is two inclined conductor boards. More accurate formulation is required and is mentioned in several papers. In this paper calculation formulation is deduced after investigating three models of inclined conductor boards and these results are compared with the result of the formulation E=U/d.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"7 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":"116165429","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 study of lightning-protection grounding for power dispatching and communication equipment 电力调度和通信设备防雷接地的研究
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853964
L. Dichen, Deng Suqiao
{"title":"The study of lightning-protection grounding for power dispatching and communication equipment","authors":"L. Dichen, Deng Suqiao","doi":"10.1109/CEEM.2000.853964","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853964","url":null,"abstract":"Because of irrational grounding, the normal work of dispatching and communication equipment is affected heavily, equipment can even be destroyed. The grounding problem for power dispatching and communication equipment in microwave buildings is analyzed in the paper. A comparison between separated and common grounding in different cases is made. An optimal grounding scheme is proposed according to the actual situation. This is of practical significance and theoretical study value for lightning-protection and anti-interference for specially sensitive automation equipment to the outside interference.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"58 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":"124540572","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
An experimental research on EMI filters capability in controlling EMP 电磁干扰滤波器控制电磁脉冲性能的实验研究
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853953
Liu Guangfu, Ge Guangmei, Liu Qiming, Shi Lihua, Z. Bi-hua, Cheng Ziming, Gao Cheng, Ouyang Suli, Liu Yuanyao, Mai Jiguan, T-Cpt Jun
{"title":"An experimental research on EMI filters capability in controlling EMP","authors":"Liu Guangfu, Ge Guangmei, Liu Qiming, Shi Lihua, Z. Bi-hua, Cheng Ziming, Gao Cheng, Ouyang Suli, Liu Yuanyao, Mai Jiguan, T-Cpt Jun","doi":"10.1109/CEEM.2000.853953","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853953","url":null,"abstract":"In an EMP filter there must be some suppressing components, such as TVS (transient voltage suppressor) or MOV (metal oxide varistor). They play a very important role in controlling transients into a certain level. On the other hand, both of TVS and MOV have their defects, such as the frangible overload capability, huge transient energy may cause EMP filters' failure. We have investigated some EMI filters. Initial results show that an improving EMI filter without suppressing components exhibits excellent capability in controlling EMP. Feed-through filters with larger capacitance can control very high EMP amplitude effectively.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"392 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":"115981891","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
The evaluation for emission measurements above 1 GHz 1 GHz以上发射测量的评价
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853979
Xiao Li
{"title":"The evaluation for emission measurements above 1 GHz","authors":"Xiao Li","doi":"10.1109/CEEM.2000.853979","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853979","url":null,"abstract":"In this article, we discuss how to evaluate a test chamber above 1 GHz and a limit line for measurements. We also give some advice how to do emission measurements in this field.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"25 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":"127662887","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
Observations and analysis of the quasi-electrostatic field anomaly before the 6.2 earthquake in Zhangbei 张北6.2级地震前准静电场异常观测与分析
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853940
L. Yantang, Guo Yong, Ji Zhiyong, Gao You-gang
{"title":"Observations and analysis of the quasi-electrostatic field anomaly before the 6.2 earthquake in Zhangbei","authors":"L. Yantang, Guo Yong, Ji Zhiyong, Gao You-gang","doi":"10.1109/CEEM.2000.853940","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853940","url":null,"abstract":"A Ms6.2 earthquake occurred at 11:50 on Jan. 10th 1998, the the strongest earthquake in China's Hebei province since the Tangshan Earthquake in 1976. Prior to the earthquake, the authors recorded obvious abnormal signals roughly at the same time from two observatory stations, one at the Handan Station in Hebei province, and the other at Sishui Station in Shandong province. The obtained materials can provide very good information on the study of the quasi-static field.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"50 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":"129870566","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
Space weather effects on technological systems on the ground 空间天气对地面技术系统的影响
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853936
R. Pirjola
{"title":"Space weather effects on technological systems on the ground","authors":"R. Pirjola","doi":"10.1109/CEEM.2000.853936","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853936","url":null,"abstract":"Space weather refers to conditions in the Earth's near-space associated with particles and electromagnetic fields which may influence the operation of space-borne and ground-based technological systems. At the Earth's surface space weather manifests itself as geomagnetic storms and its effects are known as GIC (geomagnetically induced currents). Power grids and pipelines are systems experiencing GIC. In the former, transformers can be saturated leading to different problems, and in the latter problems associated with corrosion arise. GIC are driven by the geoelectric field induced by a magnetic storm. The complex image method (CIM) has been proved to be an efficient tool for calculating the geoelectric field. The basic principles of CIM are presented in this paper. Regarding the flow of GIC, a discretely earthed power system and a continuously earthed buried pipeline represent two extreme cases requiring different methods for determining GIC.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"63 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":"130366410","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
EM scattering by rectangular conducting flat plates with thin uniaxial anisotropic materials 薄单轴各向异性材料矩形导电平板的电磁散射
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853935
Yang He-lin, Liu Wu, Lu Shu
{"title":"EM scattering by rectangular conducting flat plates with thin uniaxial anisotropic materials","authors":"Yang He-lin, Liu Wu, Lu Shu","doi":"10.1109/CEEM.2000.853935","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853935","url":null,"abstract":"In this paper, according to the equivalence principles, high frequency approximation and boundary conditions, a method has been developed to deal with the EM scattering by a rectangular conducting flat plate coated with uniaxial anisotropic radar absorbing material (RAM). The simple but effective method is available to the system of RCS prediction in which the large complex targets are modeled by facets and wedges. Numerical results show some properties of EM scattering by conducting plate coated with thin uniaxial anisotropic RAM.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"5 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":"134317868","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
Investigation on the characteristics of the electromagnetic scattering near field from complex targets 复杂目标近场电磁散射特性研究
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853895
Xiang Yingqing, Xu Peng-gen, Liu Wu
{"title":"Investigation on the characteristics of the electromagnetic scattering near field from complex targets","authors":"Xiang Yingqing, Xu Peng-gen, Liu Wu","doi":"10.1109/CEEM.2000.853895","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853895","url":null,"abstract":"Calculation and analysis of the scattering near field from some simple and complex targets using a method of picture elements (PEL) and a computer program are discussed. The analysis is based upon a method of high-frequency approximation. The uniqueness of this method is derived from the simplicity of the theoretical basis such as the physical optics (PO) and the vector potential. The calculated results show that there are large differences between the near field and the far field. The characteristics of the near field are more complex. This work has practical engineering value in the area of the electromagnetic compatibility (EMC), electromagnetic interference (EMI) prediction and electromagnetic scattering.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"96 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":"132288011","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
Suspended stripline and Ka band integrated mixer 悬挂带状线和Ka波段集成混频器
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853898
Xie Jinxiong
{"title":"Suspended stripline and Ka band integrated mixer","authors":"Xie Jinxiong","doi":"10.1109/CEEM.2000.853898","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853898","url":null,"abstract":"An integrated planar mixer has been designed by using the home-made beam lead mixer diode. It is indicated by measurements that in the frequency range from 31 to 37 GHz, the frequency conversion loss of the mixer is 8.6/spl plusmn/1.4 dB and the local oscillation radio frequency isolation is greater than 19 dB.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"19 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":"123117818","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
Development on waveguide cell for generating standard field 产生标准场的波导电池的研制
Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402) Pub Date : 2000-05-03 DOI: 10.1109/CEEM.2000.853980
Wang Hongbo, X. Yi, Lu Bingsong, Gao Yongang, Liu Shufang
{"title":"Development on waveguide cell for generating standard field","authors":"Wang Hongbo, X. Yi, Lu Bingsong, Gao Yongang, Liu Shufang","doi":"10.1109/CEEM.2000.853980","DOIUrl":"https://doi.org/10.1109/CEEM.2000.853980","url":null,"abstract":"In this paper, the development of the theory and a design scheme for a waveguide cell for generating a standard electromagnetic field are presented, The mathematical description of the electromagnetic field in a waveguide cell is improved. Should the impedance of each part of the waveguide cell system match well, the wave in the waveguide cell is a travelling wave. Thus, a quasi-uniform calibrating area can be established in the waveguide cell. The field strength of a certain point in the waveguide cell can be calculated with a theoretical uncertainty of less than /spl plusmn/0.5 dB.","PeriodicalId":153945,"journal":{"name":"Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)","volume":"303 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":"132982892","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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