改进型Vivaldi天线

›› 2011, Vol. 24 ›› Issue (7): 15-.

改进型Vivaldi天线

李鹤言,李萍,蒋旭东

(1.武警工程学院研究生管理大队,陕西西安 710086;2.武警工程学院通信工程系,陕西西安 710086)

出版日期:2011-07-15 发布日期:2011-08-16
作者简介:李鹤言(1984—),女,硕士研究生。研究方向:微波技术与天线。
基金资助:
陕西省自然科学基金资助项目(2010JM8041)

Modified Vivaldi Antenna

LI He-Yan, LI Ping, JIANG Xu-Dong

(1.Unit of Graduate Students Management,Engineering College of CAPF,Xi'an 710086,China;
2.Department of Communication Technology,Engineering College of CAPF,Xi'an 710086,China)

Online:2011-07-15 Published:2011-08-16

摘要/Abstract

摘要：

常规Vivaldi天线存在后向辐射大、主辐射方向增益低的特点。文中提出了在天线两侧开栅栏和尾部加抗流栅栏的优化方法,将天线金属贴片的表面电流汇聚于槽线部分,明显改善了天线的辐射特性,在350 MHz和830 MHz的增益分别达到5.7 dBi和8.7 dBi。通过对天线进行实物测试,其阻抗带宽为310～1 300 MHz,表明测试结果与仿真结果相符。

关键词: Vivaldi, Ansoft HFSS, VSWR, 天线增益

Abstract:

For great back-radiation and low gain in the main-direction of traditional vivaldi antenna,the article proposes a method for the improvement and optimization of antenna structure by adding slots on the metal patch.By this method,the current can be forced to gather up along the taper-slot to improve the antenna radiation property.The gain of 350 MHz is 5.7 dBi while the gain of 830 MHz is 8.7 dBi.Vivaldi antenna is measured by Network Analyzer.The impedance bandwidth of measured data is covered from 310 to 1 300 MHz,which is consistent with the simulated data.

Key words: Vivaldi;Ansoft HFSS;VSWR;Antenna gain

中图分类号:

TN821

李鹤言, 李萍, 蒋旭东. 改进型Vivaldi天线[J]. , 2011, 24(7): 15-.

LI He-Yan, LI Ping, JIANG Xu-Dong. Modified Vivaldi Antenna[J]. , 2011, 24(7): 15-.

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