一种新型双环宽带圆极化微带天线设计

发布时间：2017-12-27 15:09

本文关键词：一种新型双环宽带圆极化微带天线设计　出处：《电子科技》2015年12期 　论文类型：期刊论文

【摘要】：针对微带天线存在固有频段窄、辐射效率低,且难以获得高增益的问题,设计制作了一种新型双环宽带圆极化微带天线。天线贴片单元采用由槽型环和带状环组成的槽带状结构。槽型环和带状环分别在频率较低部分和频率较高部分各提供一个最小轴比值,通过两个最小轴比值的适当结合达到明显的带宽增强效果。天线利用宽带巴伦结构进行馈电,有效增强了阻抗匹配。通过参数优化和实物制作,仿真与实测结果表明,该天线的阻抗带宽(VSWR≤2)和3 d B轴比带宽分别达到了37%和29.8%,增益达到6.4 d B。
[Abstract]:A new dual loop broadband circularly polarized microstrip antenna is designed for the problem of narrow frequency band, low radiation efficiency and high gain. The antenna patch unit adopts a groove band structure consisting of groove ring and band ring. The groove ring and the ribbon ring provide a minimum axial ratio for each part in the low frequency part and the high frequency part respectively, and achieve the obvious bandwidth enhancement effect through proper combination of the two minimum axle ratios. The antenna is fed by the broadband barren structure, which effectively enhances the impedance matching. Through parameter optimization and physical simulation and experimental results show that the impedance bandwidth of the antenna (VSWR = 2) and D 3 B axial ratio bandwidth can reach 37% and 29.8%, the gain is 6.4 D B.
【作者单位】：武警工程大学研究生大队;
【基金】：国家自然基金资助项目(61302051) 陕西省自然科学基金资助项目(2012JQ8026) 武警工程大学基础基金资助项目(WJY201309)
【分类号】：TN822
【正文快照】： 在天线的研究设计中,微带天线由于具有体积小、剖面低、重量轻、易集成、可共形等优点而受到广泛青睐,但也存在固有频段窄、辐射效率低和难获高增益的缺点。而由于圆极化天线拥有可接受任意来波、旋向正交性、抗干扰能力强等优势,高性能的圆极化微带天线的需求越来越多、应用

【参考文献】