直线终端金属细线天线特性的数值及实验分析
doi: 10.3724/SP.J.1146.2007.00777
Numerical and Experimental Analysis of Linear-End Metallic Thin Wire Antennas
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摘要: 该文对一种直线终端金属线状结构的天线相关特性进行了分析，对天线在自由空间的辐射特性、辐射有效区以及电压驻波比(VSWR)用时域有限差分方法(FDTD)进行了分析，同时进行实际测试；研究了终端阻抗、介质介电常数、天线张角和距地面高度的变化对天线特性的影响，对在不同调制频率下的近场分布特性进行了仿真。结果表明，仿真和测试结果基本一致，该种类型天线比常规bow-tie天线对测试环境变化的适应能力更强。
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关键词:
- 直线终端金属细线天线 /
- FDTD /
- 输入阻抗 /
- VSWR
Abstract: In this paper, a kind of linear-end metallic thin wire antenna is studied. The properties of the transmitted waveforms in free space, the footprints and the VSWR are simulated with the FDTD method and tested. Simulations are carried out for various parameters such as end resistor values, permittivity values, flare angles, and height above the ground. The electronic field distributions in near field are simulated in different modulated frequencies. The results show that the simulation results and the measurement results are basic agreement. The results also show that this kind of antenna is more adaptive to the different working conditions than the common bow-tie antenna. -
[1] 栗毅, 黄春琳, 雷文太. 探地雷达理论与应用. 第一版, 北京:科学出版社, 2006 年9 月: 1-2, 70-71. [2] 周蔚红, 刘培国, 刘克成, 何建国. 探地雷达中蝶形振子天线的改进[J].电子与信息学报.2005, 27(7):1171-1173浏览 [3] Lestari A A, Yarovoy A G, and Ligthart L P. Numerical andexperimental analysis of circular-end wire bow-tie antennasover a lossy ground[J].IEEE Trans. on Antennas andPropagation.2004, 52(1):26-35 [4] Lestari A A, Yarovoy A G, and Ligthart L P. Adaptive wirebow-tie antenna for ground penetrating radar. Geoscienceand Remote Sensing Symposium, 25-29 July 2005: 368-371. [5] 葛德彪, 闫玉波. 电磁波时域有限差分方法. 第一版, 西安:西安电子科技大学出版社, 2003 年4 月: 199-200. [6] Taflove A and Hagness S C. Computational Electrodynamics.The Finite-Difficience Time-Domain Method. ThirdEdition, London: Artech House, 2005: 288-292. -
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