反射面表面与馈源误差对天线方向图的影响

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (6): 1269-1274.

• 电子技术 • 下一篇

反射面表面与馈源误差对天线方向图的影响

宋立伟, 段宝岩, 郑飞

西安电子科技大学机电科技研究所, 陕西, 西安, 710071

收稿日期:2008-06-11 修回日期:2008-09-11 出版日期:2009-06-20 发布日期:2010-01-03
作者简介:宋立伟(1982- ),男,博士研究生.主要研究方向为电子装备机电耦合理论及应用.E-mail,slw1206@163.com
基金资助:
国家重点基础研究发展计划(973计划)项目资助课题(61358)

Effects of reflector errors and phase center errors of feed on the far-field pattern of reflector antennas

SONG Li-wei, DUAN Bao-yan, ZHENG Fei

Inst. on Mechatronics, Xidian Univ., Xi’an 710071, China

Received:2008-06-11 Revised:2008-09-11 Online:2009-06-20 Published:2010-01-03

摘要/Abstract

摘要： 针对反射面天线误差信息对电性能影响的问题,提出了包含馈源相位中心和反射面表面的误差信息对反射面天线远场方向图影响的数学模型。该模型根据馈源相位中心误差和反射面表面误差引起天线口径面场分布的改变,利用口径场积分方法得到反射面天线辐射场的变化。然后,用所建立的模型对8 m口径的抛物面天线进行了数值计算,将天线在实际工况下的反射面表面误差与馈源相位中心误差一同引入模型中,分析了反射面天线误差信息对增益和副瓣电平影响,得到了相关数据和曲线,可为反射面天线的误差分析提供参考。

Abstract: To study the effects of the errors of reflector antenna on its performances,a computational model for the effect of both reflector errors and phase center errors of feed on its far-field pattern is presented.In the proposed model,the electromagnetic distributions on aperture plane changed by the reflector errors and phase center errors of feed result in the variety of antenna’s radiation field based on the aperture-field method.Finally,a Numerical computation of an 8-meter-diameter antenna is given to demonstrate the model and methodology of the paper,the data related to the gain and sidelobe level of the antenna are calculated and the corresponding curves are given.The obtained results can be used to the error analysis of a reflector antenna.

中图分类号:

宋立伟, 段宝岩, 郑飞. 反射面表面与馈源误差对天线方向图的影响[J]. Journal of Systems Engineering and Electronics, 2009, 31(6): 1269-1274.

SONG Li-wei, DUAN Bao-yan, ZHENG Fei. Effects of reflector errors and phase center errors of feed on the far-field pattern of reflector antennas[J]. Journal of Systems Engineering and Electronics, 2009, 31(6): 1269-1274.

参考文献

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反射面表面与馈源误差对天线方向图的影响

Effects of reflector errors and phase center errors of feed on the far-field pattern of reflector antennas

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