| 应用于卫星导航系统的微带天线设计 |
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| 引用本文： | 李强,项铁铭,王磊. 应用于卫星导航系统的微带天线设计[J]. 杭州电子科技大学学报, 2012, 0(3): 17-20 |
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| 作者姓名： | 李强 项铁铭 王磊 |
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| 作者单位： | 杭州电子科技大学天线与微波技术研究所,浙江杭州310018 |
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| 摘 要： | 该文主要设计一款单馈电的小型圆极化微带天线。通过对天线圆形贴片对称开槽,以及对贴片的边进行切角处理和在中心处开孔等方式,天线获得良好的圆极化性能并实现小型化。该文利用电磁仿真软件HFSS对天线进行优化设计,并进行了相应的实物制作和测试。实验结果表明：该天线工作中心频率为2.49GHz,天线-20dB回波损耗带宽70MHz,圆极化3dB轴比带宽为30MHz,天线增益3.4dB,天线可应用于中国北斗卫星定位接收系统。
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| 关 键 词： | 小型化 圆极化 微带天线 增益 轴比 |
The Design of Microstrip for Beidou Navigation System |
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| LI Qiang,XIANG Te-ming,WANG Lei. The Design of Microstrip for Beidou Navigation System[J]. Journal of Hangzhou Dianzi University, 2012, 0(3): 17-20 |
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| Authors: | LI Qiang XIANG Te-ming WANG Lei |
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| Affiliation: | (Institute of Antenna and Microwave, Hangzhou Dianzi University, Hangzhou Zhejiang 310018, China) |
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| Abstract: | A single-feed compact circularly polarized microstrip antenna is designed. The antenna can work at 2. 49GHz, which is applied to Beidou navigation system（BNS） in China. The antenna is designed with four slots equally spaced. By adjusting the slots＇ length and choosing appropriate feed position, circularly polarized radiation of microstrip antenna can be achieved. And by truncating corners and cutting, circular slot in the een- ter of patch, the size of antenna is lowed. Applying ANSOFT HFSS software to simulate the antenna and doing physical test, the results show that the impedance bandwidth corresponding to return loss than -10dB is 130MHz and 3dB axial ration bandwidth is about 30MHz. The peak gain for the proposed antenna is 3. 4dB at 2. 49GHz |
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| Keywords: | compact circular polarization microstrip gain axial ratio |
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