[1]胡玉生,朱剑英,蒋全兴.GTEM小室交叉极化特性及三维场均匀性FDTD分析[J].东南大学学报(自然科学版),2007,37(5):756-760.[doi:10.3969/j.issn.1001-0505.2007.05.004]
 Hu Yusheng,Zhu Jianying,Jiang Quanxing.Analysis of cross-polarization performance and three-dimensional field uniformity in GTEM cell using FDTD method[J].Journal of Southeast University (Natural Science Edition),2007,37(5):756-760.[doi:10.3969/j.issn.1001-0505.2007.05.004]
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GTEM小室交叉极化特性及三维场均匀性FDTD分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第5期
页码:
756-760
栏目:
机械工程
出版日期:
2007-09-20

文章信息/Info

Title:
Analysis of cross-polarization performance and three-dimensional field uniformity in GTEM cell using FDTD method
作者:
胡玉生1 朱剑英1 蒋全兴2
1 南京航空航天大学机电学院, 南京 210016; 2 东南大学电磁兼容研究室, 南京 210096
Author(s):
Hu Yusheng1 Zhu Jianying1 Jiang Quanxing2
1 College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 Electromagnetic Compatibility Laboratory, Southeast University, Nanjing 210096, China
关键词:
电磁兼容 GTEM小室 时域有限差分法 交叉极化 场均匀性
Keywords:
electromagnetic compatibility(EMC) gigahertz transverse electromagnetic(GTEM)cell finite-difference time-domain method cross-polarization field uniformity
分类号:
TB973
DOI:
10.3969/j.issn.1001-0505.2007.05.004
摘要:
采用时域有限差分法评价了1 GHz以内吉赫兹横电磁波(GTEM)小室的交叉极化特性和三维场均匀性.根据IEC 61000-4-20标准,采用9点网格法分别对测试区的1/3和1/2内导体高度区的场分布特性进行了宽频带分析,并以测试区中心截面的名义场强为参考评估了沿纵向的场均匀性.计算结果表明:在1/3内导体高度区,三维场均匀性满足6 dB限制,但工作频率超过一定频带后,交叉极化分量满足小于主分量6 dB要求较为困难; 随频率和测试区的增大,交叉极化特性和场均匀性下降,但较易满足放松要求.经实验证实计算结果准确可靠.
Abstract:
Both cross-polar coupling and three-dimensional field uniformity of gigahertz transverse electromagnetic(GTEM)cell were evaluated using finite-difference time-domain(FDTD)method at frequencies of up to 1 GHz. A 9-point grid was used to analyze the characterization of electric field distribution within the 1/3 and 1/2 septum height area of the test volume respectively in broad frequency band range according to IEC standard 61000-4-20. The numerical results show that within the 1/3 septum height area, the three-dimensional field uniformity fulfills the required 6 dB limit, but out of certain frequency band the cross-polar components are difficult to meet the 6 dB requirement relative to the primary field strength; moreover, with the increase of frequency or test volume, the cross-polarization performance and field uniformity will degrade but they are relatively easy to satisfy the relaxed requirements. The obtained results are validated by measurements.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 福建省青年科技人才创新基金资助项目(2004J025).
作者简介: 胡玉生(1970—),男,博士; 朱剑英(联系人),男,教授,博士生导师,zjyao@nuaa.edu.cn.
更新日期/Last Update: 2007-09-20