2.4/4.8/7.2 GHz三频段谐波雷达天线的研究与设计

梁转转; 王国富; 覃觅觅; 叶金才; 林建强

doi:10.11884/HPLPB202335.220337

2.4/4.8/7.2 GHz三频段谐波雷达天线的研究与设计

doi: 10.11884/HPLPB202335.220337

1.
广西科技大学自动化学院，广西柳州 545006
2.
桂林电子科技大学信息与通信学院，广西桂林 541004

基金项目: 国家自然科学基金项目(62161002)；广西自然科学基金项目(2020GXNSFAA297018)

详细信息

作者简介:
梁转转，lzz13633060806@163.com

通讯作者:
覃觅觅，qinmi-328.cool@163.com

中图分类号: TN821
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- 被引次数: 0
出版历程
- 收稿日期: 2022-10-13
- 修回日期: 2022-11-29
- 网络出版日期: 2022-11-30
- 刊出日期: 2023-03-01

Research and design of 2.4/4.8/7.2 GHz tri-band antenna of harmonic radar

1.
School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China
2.
School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China

摘要

摘要: 研究设计了一种应用于手持式谐波雷达的三频段单极子天线。天线采用共面波导馈电，通过在单极子天线主辐射体加载L型辐射枝节、在接近主辐射体的接地平面开三角形切口的方法，使其谐振于2.4 GHz，4.8 GHz和7.2 GHz三个频段。同时，在距离天线10 mm处加载金属挡板，使天线辐射方向性增强，并能接收多个方向反射的电磁波。所实现的天线尺寸为54 mm×53 mm×1.6 mm，在三个工作频段上的带宽分别为0.51 GHz（2.35～2.86），1.39 GHz（4.17～5.56），1.46 GHz（6.17～7.63），能够有效覆盖谐波雷达全部的工作频段；由天线的峰值增益和辐射方向图可知，天线在工作频段内增益性能和整体辐射性能良好。
- 谐波雷达 /
- 微带天线 /
- 多频段 /
- 单极子天线
Abstract: In this paper, a three-band monopole antenna for hand-held harmonic radar is designed. The antenna is fed by a coplanar waveguide. By loading L-shaped radiating branch on the main radiating body of the monopole antenna and cutting a triangular notch on the ground plane close to the main radiating body, the antenna resonates in three frequency bands: 2.4 GHz, 4.8 GHz and 7.2 GHz. At the same time, a metal baffle is loaded at a distance of 10 mm from the antenna to enhance the directionality of antenna radiation and to receive electromagnetic waves reflected in multiple directions. The size of antenna is 54 mm×53 mm×1.6 mm, and the bandwidth in the three operating frequency bands is 0.51 GHz (2.35−2.86 GHz), 1.39 GHz (4.17−5.56 GHz), 1.46 GHz (6.17−7.63 GHz), respectively. It can effectively cover all the working frequency band of harmonic radar. According to the peak gain and radiation pattern of the antenna, the gain performance and overall radiation performance of the antenna are good in operating frequency band.
- harmonic radar /
- microstrip antenna /
- multiband /
- monopole antenna

HTML全文

图 1 天线结构图

Figure 1. Schematics of antenna structure

下载: 全尺寸图片幻灯片

图 2 参数l，S_t，L₁对天线反射系数的影响

Figure 2. The parameter S₁₁ with different value of l, S_t, L₁

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图 3 不同频率处天线辐射方向图

Figure 3. Simulated radiation pattern of the antenna at different frequencies

下载: 全尺寸图片幻灯片

图 4 加载金属挡板天线图

Figure 4. Structure of the metal-baffle loaded antenna

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图 5 挡板对天线反射系数的影响

Figure 5. The parameters S₁₁ of antenna with or without baffle

下载: 全尺寸图片幻灯片

图 6 加载挡板后，不同频率处天线辐射方向图

Figure 6. Radiation pattern of the metal-baffle-loaded antenna at different frequencies

下载: 全尺寸图片幻灯片

图 7 不同频率处天线增益

Figure 7. Gain of antenna at different frequencies

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图 8 天线仿真和实测的S₁₁

Figure 8. Simulated and measured S₁₁

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表 1 天线的优化参数

Table 1. Parameters of antenna (mm)

D₀ D₁ D₂ D₃ D₄ L₁ L₂ W W₁

53 15 19.2 13.3 4.1 8.25 24.93 54 33.75

W₂ W₃ W_f g g_l g_w S_t l h
8.125 50 3.25 0.4 2 0.825 5 3.1 1.6

下载: 导出CSV

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