一种平衡微带线-槽线馈电的新型引向天线  

A Novel Yagi-Uda Antenna with Balanced Microstrip Line-Slot Line Feed

作　　者：林澍[1,2] 王宜欢[2] 蔡润南[2] 黄冠龙[2] 张雪莹[2] 

机构地区：[1]哈尔滨工业大学电子科学与技术博士后科研流动站,哈尔滨150080 [2]哈尔滨工业大学电子与信息工程学院,哈尔滨150080

出　　处：《微波学报》2011年第6期16-20,共5页Journal of Microwaves

基　　金：黑龙江省博士后资助经费(LBH-Z09187)

摘　　要：提出了一种结构紧凑的印刷引向天线,采用平衡微带线-槽线馈电,充分利用了空间,以减小馈电网络面积和天线尺寸。使用电磁仿真软件CST Microwave Studio对天线的结构参数进行了优化设计,并根据仿真所得到的电流结果对天线的宽带特性和定向辐射特性进行了解释。测试结果表明,该天线在1.88～3.06GHz的频带内反射系数低于-10dB,相对带宽达到了47.3%。在工作频段内增益为4.0～6.3dBi,天线总体尺寸为0.34λ0×0.58λ0,其宽频带可以用于PCS/UMTS/WLAN等多个领域,而简单的结构和较小的尺寸对于组成阵列也是有益的。A compact printed Yagi-Uda antenna is proposed which uses a balanced microstrip line-slot line feed.It makes full use of the space to reduce not only the area of the feed network but also the size of antenna.The antenna parameters have been analyzed and optimized with CST-Microwave Studio and the current results obtained from simulation gives broadband and directional radiation characteristics of the antenna.The tested results indicate that the antenna has the reflection coefficient under-10dB from 1.88 to 3.06GHz,the relative bandwidth reaches 47.3%.The proposed antenna can achieve the gain of 4.0~6.3dBi.The total size of the antenna is 0.34λ0×0.58λ0.The antenna features a simple structure,small size and wide frequency band,so that it can be used in PCS/UMTS/WLAN and other fields,and it is useful for composing antenna array also.

关 键 词：平衡微带线 槽线 馈电 引向天线 印刷天线 

分 类 号：TN820[电子电信—信息与通信工程]