发布求助
文献互助 智能选刊 最新文献

2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)最新文献

筛选
英文 中文
An Improved Coaxial Structure for Electromagnetic Parameters Measurement by Coaxial Transmission / Reflection Method 一种同轴传输/反射法测量电磁参数的改进同轴结构
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456703
Mingjie Sheng, Zhongyuan Zhou, Yixing Gu, Peng Hu, Qi Zhou, Yang Xiao
{"title":"An Improved Coaxial Structure for Electromagnetic Parameters Measurement by Coaxial Transmission / Reflection Method","authors":"Mingjie Sheng, Zhongyuan Zhou, Yixing Gu, Peng Hu, Qi Zhou, Yang Xiao","doi":"10.1109/GEMCCON50979.2020.9456703","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456703","url":null,"abstract":"In order to solve the air gap problem in the coaxial transmission / reflection method, an improved coaxial measurement structure is proposed. It consists of two coaxial structures with 50 Ω characteristic impedance and the same size of cross sections. When measuring the electromagnetic parameters of the materials with this structure, two sets of specimens are needed. One is used for calibration while another is for measurement. Accurate measurement results can be obtained with no need to modify the data by algorithm.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129871251","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
Effect Experiment of 10 kV Oil-immersed Transformer Injected by the Nanosecond Pulse 纳秒脉冲注入10kv油浸变压器效果试验
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456693
Jian Wu, Yu-hao Chen, Yan-zhao Xie, Ruijiang Sun, De-chang Ren, Ming-yue Gou, Yan Jing, A. Qiu
{"title":"Effect Experiment of 10 kV Oil-immersed Transformer Injected by the Nanosecond Pulse","authors":"Jian Wu, Yu-hao Chen, Yan-zhao Xie, Ruijiang Sun, De-chang Ren, Ming-yue Gou, Yan Jing, A. Qiu","doi":"10.1109/GEMCCON50979.2020.9456693","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456693","url":null,"abstract":"An effect experiment of a 10 kV oil-immersed transformer injected by the nanosecond pulse is conduced in this paper. To carry out the experiment, an equivalent 10 kV transmission line (TL) platform is constructed where the characteristic impedance of TL is designed as practical value. By injecting the nanosecond pulse with increasing amplitude, the injected current and response current as well as the injected voltage are measured simultaneously. Based on the measured data, the effect of transformer is analyzed.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125450818","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
Simulation and analysis of body overvoltage based on three-dimensional car body model and actual grounding system 基于三维车体模型和实际接地系统的车体过电压仿真分析
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456700
Zhongkang Yuan, Jianqiong Zhang, Xiangqiang Li, Qingfeng Wang
{"title":"Simulation and analysis of body overvoltage based on three-dimensional car body model and actual grounding system","authors":"Zhongkang Yuan, Jianqiong Zhang, Xiangqiang Li, Qingfeng Wang","doi":"10.1109/GEMCCON50979.2020.9456700","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456700","url":null,"abstract":"During the driving process of high-speed Electric Multiple Unit (EMU), the main circuit breaker will be operated frequently, resulting in transient over-voltage, which seriously endangers the operation of on-board electrical equipment. Based on a certain EMU, this paper constructs a three-dimensional vehicle body and high-voltage cable model. On this basis, considering the EMU grounding system comprehensively, an equivalent model of vehicle body over-voltage caused by the operation of the main circuit breaker is constructed, and the distribution of vehicle body over-voltage caused by this is analyzed. The actual three-dimensional model of vehicle body and highvoltage cable is established and embedded in the circuit module, so that the over-voltage characteristics of vehicle body at a specific position can be obtained. The simulation results show that the over-voltage is about 3.81kV, the oscillation time is about 28us, and the frequency spectrum is mainly 1.5684mHz, which conforms to the basic characteristics of over-voltage. After obtaining the amplitude and frequency spectrum of vehicle body over-voltage caused by VCB (Vacuum Circuit Breaker) operation, the influence of grounding system on vehicle body over-voltage is studied. The results show that the grounding resistance and inductance have certain influence on vehicle body surge over-voltage amplitude.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"233 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134094210","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
Simulation and testing study of the active antenna system for the 5G base station 5G基站有源天线系统仿真与测试研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456697
Yanpu Hu, Tao Zhang, Shaogeng An, Shouyuan Wang, Di Shen
{"title":"Simulation and testing study of the active antenna system for the 5G base station","authors":"Yanpu Hu, Tao Zhang, Shaogeng An, Shouyuan Wang, Di Shen","doi":"10.1109/GEMCCON50979.2020.9456697","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456697","url":null,"abstract":"Nowadays, the active antenna system (AAS) has been developed and employed by the 5G New Radio technology to realize the massive multi-input and multi-output (MIMO) and the 3D beamforming. Numerical modeling of the AAS can help the engineer analyze the AAS performance and measure the 5G base station efficiently. The finite difference time domain (FDTD) method combined with the Complex Frequency Shifted-Perfect matched layer (CFS-PML) is employed for the AAS radiation pattern simulation. The Over the Air (OTA) testing method is more efficient and practical for the 5G AAS base station. The compact antenna test range (CATR) is introduced and employed to study the key radio frequency parameters, such as the Equivalent Isotropic Radiated Power (EIRP), Total Radiated Power (TRP), Equivalent Isotropic Sensitivity (EIS). Moreover, a 3D AAS radiation pattern has been simulated in the CATR.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122218506","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
Lightning Protection Design of High-Speed Maglev System 高速磁悬浮系统的防雷设计
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456744
Shi Xiao, Lu Xing, Dan Zhang
{"title":"Lightning Protection Design of High-Speed Maglev System","authors":"Shi Xiao, Lu Xing, Dan Zhang","doi":"10.1109/GEMCCON50979.2020.9456744","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456744","url":null,"abstract":"The high-speed maglev train would be the highest point in the maglev system under high-speed operating, which makes the train body easy to be attacked by lightning strike directly. Therefore the lightning protection system need to be emphasized to ensure the safety and reliability of the on-board low-voltage equipment. The grounding system is the crucial part in lightning protection of maglev system. Therefore, in this paper, the applicability of lightning protection standards to maglev system are discussed. The lightning protection measurements of high-speed railway are used as references to offer a proposal to lightning protection design of maglev system. The discharge path and electric structure of wheel-rail train system is compared with maglev system to illuminate the differences and similarities between the two system in lightning protection design. The requirements of maglev lightning protection system are highlighted and several lightning protection design proposals for on-board devices, cables and train body are proposed.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115003332","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
Voltage Distribution of Transformer Winding under the Fast Transient Pulse 快速瞬态脉冲作用下变压器绕组的电压分布
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456699
Bodong Chen, Chen Shen, Pinghai Lv, W. Han, Yueping Yang, Junhao Li
{"title":"Voltage Distribution of Transformer Winding under the Fast Transient Pulse","authors":"Bodong Chen, Chen Shen, Pinghai Lv, W. Han, Yueping Yang, Junhao Li","doi":"10.1109/GEMCCON50979.2020.9456699","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456699","url":null,"abstract":"The fast transient pulse (FTP), mainly coming from the El component of the high-altitude electromagnetic pulse (HEMP) and the very fast transient overvoltage (VFTO), is a threat to the power system and its electrical infrastructures represented by power transformers. In order to study the voltage distribution of transformer windings under FTP, a circuit model of a two-winding transformer is built. Analytical method (AM) and finite-element method (FEM) are used and compared in the calculation of the electrical parameters for the model. An FTP waveform captured in a field test is used as input in this paper, and different kinds of voltage distribution are discussed using both time-domain and frequency-domain analysis. The simulation result shows that as the overvoltage propagates from the input end to the farther part of the winding, the input component begins to attenuate gradually and the natural frequency oscillation emerges and becomes larger. The maximum voltage near the tail of the winding becomes higher for that reason. The transfer function for the output voltage at the head-end of the HV grounding wire also shows a sheer increase near the natural frequency. This phenomenon should be taken into consideration in related insulation design or on-site test.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115007347","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
Polyurethane Foams Decorated with Carbon Nanotubes Applied in Microwave Absorption 碳纳米管修饰聚氨酯泡沫塑料在微波吸收中的应用
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456680
Jie Zhang, J. Ma, K. Li, Jianyu Gu, Dong-hong Wang, Peng Wang, Chen Ma
{"title":"Polyurethane Foams Decorated with Carbon Nanotubes Applied in Microwave Absorption","authors":"Jie Zhang, J. Ma, K. Li, Jianyu Gu, Dong-hong Wang, Peng Wang, Chen Ma","doi":"10.1109/GEMCCON50979.2020.9456680","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456680","url":null,"abstract":"Well-designed mono-layered and multi-layered polyurethane/carbon nanotubes (PU/CNTs) foams with excellent microwave absorption property were prepared by simple ball-milling and impregnation method. The formation of PU/CNTs was studied using scanning electron microscopy (SEM) and Energy dispersive spectrometer (EDS). The microwave absorption property of the PU/CNTs foams was investigated. The results show that the mono-layered PU/CNTs foams exhibit excellent microwave absorption performance with strong absorption (reflection loss is -43.5 dB at 13.8 GHz), thickness (10 mm) and broad bandwidth (effective absorption bandwidth is 10.5 GHz). For multi-layered PU/CNTs foams, the reflection loss can reach - 54.1 dB at 15.1 GHz, with a broad band absorption from 2 GHz to 40 GHz, in 30 mm thickness. The fabricated PU/CNTs foams can be used as commercial broad band microwave absorbing materials for antenna measurements, telecom and electromagnetic compatibility.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115366375","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 on the Technology of Low Temperature Moulded Conductive Rubber Radar Box Cover 低温成型导电橡胶雷达箱盖工艺研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456713
W. Shengli, Ren Shengping, Zhao Weifu, Lin Yankui, MI Yujie, Wu Xiuzhen, Liu Fan
{"title":"Study on the Technology of Low Temperature Moulded Conductive Rubber Radar Box Cover","authors":"W. Shengli, Ren Shengping, Zhao Weifu, Lin Yankui, MI Yujie, Wu Xiuzhen, Liu Fan","doi":"10.1109/GEMCCON50979.2020.9456713","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456713","url":null,"abstract":"The paper carried on the special studies on the process technology, in terms of low adhesion and poor resistance to salt fog corrosion of low temperature moulded conductive rubber radar box cover (conductive rubber cover)—a new product for the military products supporting. The formula of conductive rubber was optimized by orthogonal test. Simultaneously, the formula of primer and the spraying process were improved. The result showed that the adhesion between the conductive rubber and cover was improved significantly by adopting the above technology. After the push-pull test, there was no peeling phenomenon within 2 minutes when the thrust was 5N. After 96 hours salt fog test and shielding effectiveness test, the resistance to salt fog corrosion meet the requirements of military customers completely.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116046355","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
Radiation analysis of array antenna based on array element synthesis method 基于阵元综合法的阵列天线辐射分析
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456750
Liang Chen, Yi Mo, Wei-jun Wu
{"title":"Radiation analysis of array antenna based on array element synthesis method","authors":"Liang Chen, Yi Mo, Wei-jun Wu","doi":"10.1109/GEMCCON50979.2020.9456750","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456750","url":null,"abstract":"An array element synthesis method for analyzing theradiation pattern of an array antenna is proposed. In this method, when calculating the radiation pattern of the array antenna, only themutual coupling characteristics between adjacent array elements areconsidered, and the mutual coupling between the distant elements isignored, thereby reducing the number of calculation matrices andspeeding up the calculation speed. Taking the printed dipole arrayantenna as an example, the radiation of 5*5 and 20*20 arrayantennas is analyzed by array element synthesis method. Thesimulation results are consistent with the results of the full-wavemethod, and the gains of the main lobe and the side lobe are basically consistent. The array element synthesis method can be used in arrayantenna radiation prediction and simulation work.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122497803","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
Influence of Multi-stage Choke Coupling on Insertion Loss and Optimization Design 多级扼流圈耦合对插入损耗的影响及优化设计
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456719
Ceyi Ma, Y. Wen, Shuntao Jin
{"title":"Influence of Multi-stage Choke Coupling on Insertion Loss and Optimization Design","authors":"Ceyi Ma, Y. Wen, Shuntao Jin","doi":"10.1109/GEMCCON50979.2020.9456719","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456719","url":null,"abstract":"Mutual inductance in multistage filter will cause uncontrolled noise coupling from multiple chokes, so filter components between the two magnetic components will be bypassed to a certain extent. This will lead to weaken insertion loss (IL) value of filter circuit much less than what expected, that is detrimental to pass Conducted Emission (CE) and Radiation Emission (RE) tests, so it's important to analyze it and prepare the remediation. In order to study the influence of mutual inductance between multi-stage chokes on the insertion loss of filter circuit, this paper establishes the model of multi-stage chokes by electromagnetic simulation software, analyzes different installation methods by simulation, calculates the influence law of mutual inductance between chokes on the insertion loss of filter circuit, and proposes the optimization scheme. The simulation results show that the change of common mode choke spacing has the greatest influence on the insertion loss, which can reach 3dB. While the change of angle has the least influence, and the horizontal installation of two-stage choke has the least influence on the insertion loss. After optimization design, this effect can be reduced to 2 dB.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123522264","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信