| 单孔毁伤对赋形反射面天线辐射特性的影响 |
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| 引用本文： | 肖疆,徐晓文,董涛.单孔毁伤对赋形反射面天线辐射特性的影响[J].北京理工大学学报,2003,23(6):768-771. |
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| 作者姓名： | 肖疆 徐晓文 董涛 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 研究赋形反射面天线的反射面在单孔毁伤条件下的辐射特性，利用基于表面电流积分的物理光学法，对赋形反射面天线的远场辐射特性进行了建模和分析，比较了反射面完好时辐射特性的计算结果和测试值，具有很好的一致性．重点探讨了天线反射面单孔毁伤后远区辐射特性随孔径及孔位置的变化规律，得出毁伤孔径越大或孔越靠近反射面中心位置时，天线的增益下降越多，副瓣电平提高越多的结论。
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| 关 键 词： | 赋形反射面 物理光学法 辐射方向图 天线毁伤 |
| 文章编号： | 1001-0645(2003)06-0768-04 |
| 收稿时间： | 2002/11/18 0:00:00 |
| 修稿时间： | 2002年11月18日 |
A Study on the Radiation Characteristics of a Shaped Beam Reflector Antenna Subjected to the Single-Hole Damage |
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| XIAO Jiang,XU Xiao-wen and DONG Tao.A Study on the Radiation Characteristics of a Shaped Beam Reflector Antenna Subjected to the Single-Hole Damage[J].Journal of Beijing Institute of Technology(Natural Science Edition),2003,23(6):768-771. |
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| Authors: | XIAO Jiang XU Xiao-wen and DONG Tao |
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| Institution: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | The radiation characteristic of a shaped beam reflector antenna subjected to a single-hole damage is studied. The far field of the shaped reflector antenna is modeled and analyzed using the method of physical optics based on surface current integration. Comparisons between the calculated results and those measured before the damage were made, and good agreement has been found to exist. A study was then made on the radiation pattern characteristics of the antenna after its reflector is damaged by bomb explosion, including the influence of the size and position of the damage. The larger the size and the closer the position of the damage hole to the reflector center, the higher will be position of the side lobe and the lower will be the gain of the antenna. |
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| Keywords: | shaped beam reflector PO method radiation patterns antenna damage |
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