| 聚焦条件下的高斯波束矩形口径天线近场分析 |
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| 引用本文： | 张云鹏,李艳玲.聚焦条件下的高斯波束矩形口径天线近场分析[J].强激光与粒子束,2011,23(9). |
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| 作者姓名： | 张云鹏 李艳玲 |
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| 作者单位： | 华北水利水电学院 电力系, 郑州 450011 |
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| 摘 要： | 采用口径场法对聚焦条件下具有高斯波束的矩形口径天线近场进行了分析，得到了聚焦条件下的近场场强分布与近场增益解析式，并对不同的聚焦位置进行了仿真。结果表明：在近场区，聚焦位置离轴向越近，其场强越强，且增益越大,聚焦位置沿轴向时其场强与增益皆为最大；反之，聚焦位置离轴向越远，其近场场强与近场增益越小。因此，通过聚焦可以显著提高天线口径面场的近场场强与增益指标，从而提高天线系统的有效作用距离。
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| 关 键 词： | 矩形口径 近场 高斯波束 聚焦 增益 |
| 收稿时间： | 1900-01-01; |
Near field analysis of rectangular aperture antenna under focusing of Gaussian beam |
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| Zhang Yunpeng,Li Yanling.Near field analysis of rectangular aperture antenna under focusing of Gaussian beam[J].High Power Laser and Particle Beams,2011,23(9). |
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| Authors: | Zhang Yunpeng Li Yanling |
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| Institution: | (Department of Electric Power, North China University of Water Sources and Electric Power, Zhengzhou 450011, China) |
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| Abstract: | The paper discusses the near field of rectangular aperture antenna under focusing of Gaussian beam by using aperture field method,and obtains the analytic expressions of the near field intensity and gain.Corresponding simulations are conducted under different focusing conditions.The results show that in near field,the nearer the focusing position is from the axis,the bigger the field intensity and gain are,and the field intensity and gain reach their maxima when the focusing position is on the axis.Therefor... |
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| Keywords: | rectangular aperture near field Gaussian beam focusing gain |
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