| 一种宽带微带八木天线的设计 |
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| 引用本文： | 商 锋,李晓娇.一种宽带微带八木天线的设计[J].太赫兹科学与电子信息学报,2019,17(3):445-447. |
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| 作者姓名： | 商 锋 李晓娇 |
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| 作者单位： | School of Electronic Engineering，Xi''an University of Posts and Telecommunications，Xi''an Shaanxi 710121，China and School of Electronic Engineering，Xi''an University of Posts and Telecommunications，Xi''an Shaanxi 710121，China |
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| 摘 要： | 针对传统八木天线体积过大，难以与其他载体共形，相对带宽很窄的问题，设计了一种宽带微带八木天线。天线采用一种比较简单的馈电方式减小天线的尺寸，利用附加寄生贴片、振子耦合枝节和金属化孔的方式展宽频带和改善天线的阻抗匹配。使用Ansoft公司高频结构仿真器(HFSS)对天线进行仿真设计和优化，并对实物进行测试。最后结果表明，所设计、制作的天线频段在1.81~2.57 GHz内，电压驻波比(VSWR)小于2，相对带宽为31%，在2.4 GHz频率处的增益大于9 dB。仿真和测试结果显示，该宽带微带八木天线基本达到设计要求。
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| 关 键 词： | 微带八木天线 宽带 相对带宽 高增益 |
| 收稿时间： | 2017/12/24 0:00:00 |
| 修稿时间： | 2018/1/12 0:00:00 |
Design of a broadband microstrip Yagi antenna |
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| SHANG Feng and LI Xiaojiao.Design of a broadband microstrip Yagi antenna[J].Journal of Terahertz Science and Electronic Information Technology,2019,17(3):445-447. |
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| Authors: | SHANG Feng and LI Xiaojiao |
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| Abstract: | Aiming at the problems that the traditional Yagi antenna is too large to conform to other carriers and its relative bandwidth is very narrow, a broadband microstrip Yagi antenna is designed. The antenna utilizes a relatively simple feeding method to reduce the antenna size, and utilizes the additional parasitic patches, vibrator coupling branches and metallized holes to expand the bandwidth and improve the antenna impedance matching. The antenna is simulated, designed and optimized by using Ansoft High Frequency Structure Simulator(Ansoft HFSS), and the real antenna is tested. The simulation and test results show that the antenna Voltage Standing Wave Ratio(VSWR) is less than 2, the relative bandwidth is 31% and the gain is greater than 9 dB at 2.4 GHz in the range of 1.81 GHz to 2.57 GHz, which indicates that the proposed broadband microstrip Yagi antenna basically meets the design requirements. |
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