| GTEM小室交叉极化特性及三维场均匀性FDTD分析 |
| |
| 引用本文： | 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 |
| |
| 作者姓名： | 胡玉生 朱剑英 蒋全兴 |
| |
| 作者单位： | 南京航空航天大学机电学院,南京,210016;东南大学电磁兼容研究室,南京,210096 |
| |
| 基金项目： | 福建省青年科技人才创新基金 |
| |
| 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.
|
| 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 |
| 文章编号： | 1001-0505（2007）05-0756-05 |
| 修稿时间： | 2006-09-04 |
Analysis of cross-polarization performance and three-dimensional field uniformity in GTEM cell using FDTD method |
| |
| 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 |
| |
| Authors: | Hu Yusheng Zhu Jianying Jiang Quanxing |
| |
| Affiliation: | 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 |
| |
| 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. |
| |
| Keywords: | electromagnetic compatibility(EMC) gigahertz transverse electromagnetic(GTEM) cell finite-difference time-domain method cross-polarization field uniformity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
