多分支平面印刷天线的设计  

Design of multi-branch printed antenna

作　　者：万小凤[1] 郑宏兴[1] 张玉贤[1] 

机构地区：[1]天津职业技术师范大学天线与微波技术研究所,天津300222

出　　处：《天津职业技术师范大学学报》2014年第4期6-10,共5页Journal of Tianjin University of Technology and Education

基　　金：国家自然科学基金项目(61371043);天津市应用基础及前沿技术研究计划(12JCYBJC10500)

摘　　要：设计了一种多分支平面印刷天线,采用微带线馈电方式,其中微带线设计成T形,与辐射单元匹配.辐射单元由3个L形的金属面结构构成,其分别工作在2.4 GHz、3.5 GHz和5.4 GHz,可应用于无线局域网（WLAN）和全球微波互联接（WiMAX）系统.通过电磁仿真软件HFSS对这种天线进行设计,在WLAN应用频段上10 dB阻抗带宽分别为1 GHz （4.9～5.9 GHz）和310 MHz （2.24～2.55 GHz）;在WiMAX应用频段上10 dB阻抗带宽380 MHz （3.3～3.68 GHz）.实测结果表明,这种天线具有良好的远场辐射特性,其增益在2.5～4.7 dBi之间.A multi-branch printed antenna is designed in this paper, which consists of three L- shape units, corresponding frequencies of 2.4 GHz, 3.5 GHz and 5.4 GHz. It can be applied to WLAN and WiMAX systems. Microstrip line is designed as T-shape to feed the antenna and match each radiation unit. The electromagnetic simulation software HFSS is used to de- sign the antenna. The result shows that 10 dB impedance bandwidths are approximately 1 GHz（4.9-5.9 GHz） and 310 MHz （2.24-2.55 GHz） for WLAN, and 380 MHz （3.3-3.68 GHz） for WiMAX. The designed antenna is fabricated and then tested. Good performance is obtained for far-field characteristics of radiation. The total gain of this antenna is between 2.5 and 4.7 dBi.

关 键 词：多分支单元 印刷天线 小型化 

分 类 号：TN822.8[电子电信—信息与通信工程]