| 一种工作于1.6 GHz ~20 GHz 的高增益对跖Vivaldi 天线 |
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| 引用本文： | 赵丹,陈军,万发雨,于兵,李彬鸿.一种工作于1.6 GHz ~20 GHz 的高增益对跖Vivaldi 天线[J].现代雷达,2018,40(2):68-72. |
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| 作者姓名： | 赵丹 陈军 万发雨 于兵 李彬鸿 |
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| 作者单位： | 南京信息工程大学电子与信息工程学院,南京信息工程大学电子与信息工程学院,南京信息工程大学电子与信息工程学院;气象灾害预报预警与评估协同创新中心,南京信息工程大学电子与信息工程学院;气象灾害预报预警与评估协同创新中心,中国科学院硅器件技术重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(61601233);江苏省自然科学基金资助项目(BK20150918);江苏省双创团队人才计划资助项目(SRCB201526);南京信息工程大学“信息与通信工程冶优势学科资助 |
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| 摘 要： | 设计了一款工作于1.6 GHz ~20 GHz 的高增益对跖Vivaldi 天线,该天线在常规对跖Vivaldi 天线的左右两端加载半椭圆贴片结构,改善低频驻波比特性,进而提高了天线的阻抗带宽;在天线主轴方向加载梯形基板,将天线表面电场约束在天线的主轴方向上,不但消除了天线增益峰值的偏移问题,而且提高了天线的增益值。实测结果表明:该天线在1. 6 GHz ~20 GHz 频段内电压驻波比小于2,增益为1. 5 dB ~11. 1 dB。此外,该天线增益峰值偏移现象得到明显抑制,具有辐射方向性好、增益高、交叉极化比小的优点。
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| 关 键 词： | 对跖Vivaldi 天线 高增益 半椭圆贴片 梯形介质基板 |
A High Gain Antipodal Vivaldi Antenna Operating at 1. 6 GHz ~20 GHz |
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| ZHAO Dan,CHEN Jun,WAN Fayu,YU Bing and LI Binhong.A High Gain Antipodal Vivaldi Antenna Operating at 1. 6 GHz ~20 GHz[J].Modern Radar,2018,40(2):68-72. |
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| Authors: | ZHAO Dan CHEN Jun WAN Fayu YU Bing and LI Binhong |
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| Affiliation: | College of Electronic and Information Engineering,College of Electronic and Information Engineering,College of Electronic and Information Engineering;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,College of Electronic and Information Engineering;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters and Key Laboratory of Silicon Device Technology, Chinese Academy of Sciences |
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| Abstract: | A high-gain antipodal Vivaldi antenna operating at the frequency range of 1. 6 GHz ~20 GHz is designed. Semi-elliptical patches are loaded at the left and right ends of the conventional antipodal Vivaldi antenna, so the VSWR characteristics at low frequency are improved, thus increasing the impedance bandwidth of the antenna. In order to effectively constrain the electric field in the direction of main axis radiation, a trapezoidal dielectric substrate is loaded in the direction of major axis, which can solve the gain peak offset problem and improve the gain value. The measured results show that the VSWR is smaller than 2 between 1. 6 GHz and 20 GHz, its gain is 1. 5 dB ~11. 1 dB. In addition, gain peak shifting at E-plane is significantly restrained, and it also has the advantages of good radiation direction, high gain, low cross-polarization ratio. |
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| Keywords: | antipodal Vivaldi antenna high gain semi-elliptical patch trapezoidal dielectric substrate |
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