| 对数周期偶极子天线的电特性分析 |
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| 引用本文： | 耿立红,夏志国,王秉中.对数周期偶极子天线的电特性分析[J].天文研究与技术,1996(2). |
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| 作者姓名： | 耿立红 夏志国 王秉中 |
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| 作者单位： | 中国科学院云南天文台，四川成都电子科技大学 |
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| 摘 要： | 正在发展中的云南天文台０．５ＧＨｚ—１．５ＧＨｚ快速射电频谱分析仪的接收天线部分是计划在现有的十米口径抛物面天线的焦点上安装两付互相垂直的对数周期偶极子天线作为馈源。本文介绍了设计一个ＦＯＲＴＲＡＮ语言程序对对数周期偶极子天线电特性进行分析的过程，它可以在整个工作频段范围内计算出任意频率点上一副对数周期偶极子天线两个主平面内的方向图、波瓣宽度、增益和输入阻抗，并把结果以数据文件的形式记录下来，结合绘图软件，就可给出直观的结果，从而为对数周期偶极子天线的设计方案提供了可靠的理论判据。本文最后针对为云南天文台抛物面所设计的馈源作具体的分析。
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| 关 键 词： | 天线，计算机程序 |
An Analysis on Log-Periodic Dipole Antenna |
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| Geng Lihong, Xia Zhiguo.An Analysis on Log-Periodic Dipole Antenna[J].Astronomical Research & Technology,1996(2). |
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| Authors: | Geng Lihong Xia Zhiguo |
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| Abstract: | A ten - meter parabolic reflector with crossed LPDA (Long - Periodic Dipole Antenna) feed is planned to be used as the forepart of the developing fast Radio spectrograph in 0. 5GHz- 1. 5GHz at the Yunnan Observatory. In this paper we have designed a FORTRAN program to analyze the electric parameters of the LPDA. And with this program, radiation Patterns, 10dB down beamwidth, gains and input impedence of one LPDA of its two main planes(E plane and H plane ) will be given as data files which can be easily converted into figures for any frequency of the bandwidth of the antenna. Some figures, as example, are given at last. This program can be taken as a method to determine the design of LPDA. |
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| Keywords: | Antenna Computer program |
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