| 一种机载宽频带轻量化双偶极子测量天线设计 |
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| 引用本文： | 双巧玲,张巨勇,刘靖鑫,吴锋泉,严瑞斌,李春光,陈志平.一种机载宽频带轻量化双偶极子测量天线设计[J].电子机械工程,2018,34(4):1-4,22. |
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| 作者姓名： | 双巧玲 张巨勇 刘靖鑫 吴锋泉 严瑞斌 李春光 陈志平 |
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| 作者单位： | 杭州电子科技大学,杭州电子科技大学,杭州电子科技大学,中国科学院国家天文台,杭州电子科技大学,杭州电子科技大学,杭州电子科技大学 |
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| 基金项目： | 国家自然科学基金委员会-中国科学院天文联合资助项目(U1631118) |
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| 摘 要： | 在小型旋翼无人机平台的天线测量系统中,测量发射天线要具有双极化、宽频带及轻量化的特点。为实现宽频带与双极化的电性能需求,设计了一种带反射腔的双偶极子天线,2 对偶极子十字交叉,采用同轴电缆馈电,共用一块反射底板;针对轻量化的要求,提出了“铜箔+PA6冶及结构件薄化的新型天线反射腔结构。通过电磁软件CST 建立模型,对偶极子天线进行了仿真。仿真表明,所设计天线在650 ~ 1 400 MHz 的测试频带内,阻抗带宽为73.2%(电压驻波比小于2.5),2 个激励端口的隔离度大于50 dB,增益大于7 dBi,方向图对称性好,天线总质量低于0.6 kg,故天线的综合性能满足该机载测量系统的要求。
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| 关 键 词： | 机载天线 双偶极子天线 宽频带 轻量化设计 |
Design of an Airborne Broadband and Lightweight Dual Dipoles Measurement Antenna |
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| SHUANG Qiao-ling,ZHANG Ju-yong,LIU Jing-xin,WU Feng-quan,YAN Rui-bin,LI Chun-guang and CHEN Zhi-ping.Design of an Airborne Broadband and Lightweight Dual Dipoles Measurement Antenna[J].Electro-Mechanical Engineering,2018,34(4):1-4,22. |
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| Authors: | SHUANG Qiao-ling ZHANG Ju-yong LIU Jing-xin WU Feng-quan YAN Rui-bin LI Chun-guang and CHEN Zhi-ping |
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| Affiliation: | Hangzhou Dianzi University,Hangzhou Dianzi University,Hangzhou Dianzi University,National Astronomical Observatories, Chinese Academy of Sciences,Hangzhou Dianzi University,Hangzhou Dianzi University and Hangzhou Dianzi University |
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| Abstract: | The antenna measurement system of the small airborne platform has special requirements for its transmitting source antenna. In order to obtain a broadband and dual-polarized radiation characteristic, a novel dual dipoles antenna with reflection cavity is presented. The crossed dual dipoles share a coaxial feed cable and a reflecting board. A new reflective cavity structure of copper foil and PA6 plate is proposed to meet the weight requirement.The dual dipoles antenna model is built and simulated in electromagnetic software CST. The results show that within test band of 650 ~1 400 MHz the pattern has a good symmetry, the antenna achieves an impedance bandwidth of 73.2% (Voltage standing wave ratio is lower than 2.5) with an isolation between the two ports over 50 dB, the antenna gain is higher than 7 dBi and the total weight of antenna is less than 0.6 kg. Therefore, the antenna meets the requirements of measurement system. |
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| Keywords: | airborne antenna dual dipoles antenna broadband lightweight design |
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