[1]丁卫平,徐金平.背腔式分形微带贴片天线电磁散射特性分析[J].东南大学学报(自然科学版),2003,33(1):19-21.[doi:10.3969/j.issn.1001-0505.2003.01.005]
 Ding Weiping,Xu Jinping.Analysis of electromagnetic scattering by microstrip fractal patch antennas residing in a cavity[J].Journal of Southeast University (Natural Science Edition),2003,33(1):19-21.[doi:10.3969/j.issn.1001-0505.2003.01.005]
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背腔式分形微带贴片天线电磁散射特性分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
33
期数:
2003年第1期
页码:
19-21
栏目:
数学、物理学、力学
出版日期:
2003-01-20

文章信息/Info

Title:
Analysis of electromagnetic scattering by microstrip fractal patch antennas residing in a cavity
作者:
丁卫平1 徐金平2
1 南京航空航天大学信息科学与技术学院,南京 210016; 2 东南大学毫米波国家重点实验室,南京 210096
Author(s):
Ding Weiping1 Xu Jinping2
1 College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China
2 State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096,China
关键词:
电磁散射 分形微带天线 有限元法 边界积分方程
Keywords:
electromagnetic scattering microstrip fractal patch antennas FEM BI
分类号:
O441.4
DOI:
10.3969/j.issn.1001-0505.2003.01.005
摘要:
将矢量有限元方法和边界积分方法相结合,分析背腔式分形微带贴片天线的电磁散射特性.给出了该方法的理论模型.根据变分原理得出原有问题的等效泛函,将背腔体用四面体单元进行剖分,采用矢量基函数展开各单元内的电场,按照里兹方法得到一组线性方程,再利用腔体开口面上电磁场的连续性,应用边界积分方程得到另外一组线性方程,两组方程构成完备的线性方程组,由此求出腔体开口面的等效磁流和原问题的散射场.通过将该混合方法应用于传统的背腔式微带贴片天线的RCS计算,验证了该方法的正确性.在此基础上,对背腔式分形微带贴片天线的电磁散射特性进行了计算和分析.结果显示,背腔式分形微带贴片天线的电磁散射特性主要取决于微带天线的激励单元而不是寄生单元.
Abstract:
A hybrid technique(FEM/BI)is employed for the evaluation of electromagnetic scattering by microstrip fractal patch antennas residing in a cavity. In accordance with the variational theory, the equivalent functional of the problem is given. Edge-based FEM and boundary integral equation are employed to deduce the complete matrix equation for the calculation of the equivalent magnetic current on the opening of the cavity, from which RCS(radar cross section)of the antennas are computed. Numerical results for a conventional microstrip patch antenna are presented to demonstrate the accuracy of the technique. Then, a number of numerical results for microstrip fractal patch antennas residing in a cavity are presented. The calculated results show that the electromagnetic scattering of the microstrip fractal patch antennas residing in a cavity depends mainly on the driven element rather than the parasitic fractal elements.

参考文献/References:

[1] Sindou M,Ablart G,Sourdois C.Multiband and wideband properties of printed fractal branched antennas[J].Electronics Letters,1999,35(3):181-182.
[2] Liang Xu.Multiband characteristics of two fractal antennas [J].Microwave and Optical Technology Letters,1999,23(4):242-245.
[3] Prasad R V Hara,Purushottam Y,Mistra V C,et al.Microstrip fractal patch antenna for multi-band communication[J].Electronics Letters,2000, 36(14):1179-1180.
[4] Du Z W,Gong K,Fu J S,et al.Analysis of microstrip fractal patch antenna for multi-band communication[J].Electronics Letters, 2001,37(13):805-806.
[5] Jin J M,Ni S S,Lee S W.Hybridization of SBR and FEM for scattering by large bodies with cracks and cavities[J].IEEE Trans Antennas Propagat, 1995, 43(10):1130-1139.
[6] Jin J M,Volakis J L.A hybrid finite element method for scattering and radiation by microstrip patch antennas and arrays residing in a cavity [J].IEEE Trans Antennas Propagat,1991,39(11):1598-1604.

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备注/Memo

备注/Memo:
基金项目: 国防科技重点实验室基金资助项目(514370601JW0
601).
作者简介: 丁卫平(1967—),男,博士生; 徐金平(联系人),男,博士,教授,博士生导师,jpxu@seu.edu.cn.
更新日期/Last Update: 2003-01-20