准八木型宽带高增益微带天线  

Microstrip-fed quasi-yagi antenna withwide band width and high gain

作　　者：王鹏[1] 郑剑锋[1] 高旭[1] 李越[1] 冯正和[1] 

机构地区：[1]清华大学微波与数字通信国家重点实验室,北京100084

出　　处：《电波科学学报》2010年第5期828-832,共5页Chinese Journal of Radio Science

基　　金：国家重点基础研究发展规划项目(2009CB320205);国家科技重大专项课题(2009ZX03007-003);国家863计划项目资助课题(2009AA011503);国家自然科学基金(60771009)

摘　　要：基于八木天线的结构设计并制作了一个准八木型宽带高增益微带天线，利用三维电磁仿真软件（Ansoft HFSS）进行仿真设计，在已有的单一引向器结构的基础上，通过增加引向器数量实现了高增益和较宽的带宽。实际测试表明：天线工作频段在4．8～6．4GHz，在中心频率5．6GHZ处，峰值增益约为10．2dB，前后比约为21dB，与仿真结果基本吻合。另外，还给出了准八木型高增益微带天线的设计过程，并对具体结构和参数的选择对天线性能的影响进行了比较和讨论。A microstrip Quasi-yagi antenna based on yagi antenna is designed using software for 3-D electromagnetic field analysis called Ansoft HFSS, and results with high gain and relatively wide bandwidth are presented by adding the directors. The antenna is also fabricated and tested. The working band of the antenna is 4.8 ~6.4 GHz, and the peak gain at the working frequency of 5.6 GHz is about 10.2 dB,the front-to-back ratio is about 21 dB, and it accords with the emulation results. The design process of the microstrip Quasi-yagi antenna is also presented, and the influence of the structure parameters on the performance of the antenna is discussed.

关 键 词：准八木型天线 高增益 宽带 微带天线 

分 类 号：TN828.6[电子电信—信息与通信工程]