V形地平面反射结构新型印制偶极子天线  

Novel printed dipole antenna with reflecting structure of V-shaped ground plane

作　　者：范志广[1] 冉立新[1] 陈抗生[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2005年第9期1292-1295,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(60201001).

摘　　要：为了扩展天线的阻抗带宽和改善天线的方向性,提出一种采用了地平面反射结构的新型印制偶极子天线.分析微带巴伦和印制偶极子的工作原理,延伸并成形天线的地平面以得到反射结构.采用V形地平面反射天线向馈电结构的辐射,调整了天线的输入匹配状况和辐射方向图.使用专业射频(RF)和微波软件进行数值仿真,分析地平面延伸角度和延伸位置对天线输入反射损耗和辐射方向图的影响,得到优化的天线设计尺寸参数.结果表明,与没有地平面反射结构的天线相比,该印制偶极子天线增加了阻抗带宽,提高了前向辐射增益,抑制了后向辐射.To broaden the antenna＇s impedance bandwidth and its radiation pattern, a novel printed dipole antenna with reflecting structure of V-shaped ground plane was proposed. The principles of microstrip balun and printed dipole were analyzed, and the antenna＇s ground plane was extended and shaped to form the reflecting structure. “V” shape was adopted to reflect the antenna＇s radiation on the feeding structure, and the antenna＇s input match and the radiation pattern were modified. Numerical simulation was carried out with professional radio frequency （RF） and microwave software. The effects of the ground plane＇s extending angle and position on the antenna＇s returning loss and radiation pattern were investigated to obtain the optimized antenna＇s design parameters. The results indicate that compared with the antenna without reflecting structure, the proposed antenna achieves broader impedance bandwidth, increases the forward radiation gain and has stronger backward radiation suppression.

关 键 词：印制偶极子 微带巴伦 V形地平面 

分 类 号：TN821.4[电子电信—信息与通信工程]