一种微带准八木天线的改进设计  

Amelioration of the Quasi-Yagi Antenna

作　　者：倪国旗[1,2] 张涛[1] 倪围[1] 李树彬[3] 

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004 [2]桂林空军学院,桂林541003 [3]空军工程大学,西安710051

出　　处：《微波学报》2013年第1期51-54,共4页Journal of Microwaves

基　　金：广西回国基金(桂科回0991021)

摘　　要：在Ramadan A.Alhalabi设计的准八木天线基础上进行了改进设计,采取增加展宽天线带宽的两个寄生贴片和振子耦合枝节和提高天线增益的天线背面引向振子组,减小天线体积的馈线结构等改进措施,从而达到展宽天线相对带宽的目的。使用Ansoft HFSS软件对改进天线进行仿真实验年和对实物天线进行测试,结果表明:这种改进型天线结构设计合理,其相对带宽都大于20%(VSWR≤2),在2.4GHz处的增益都大于10dB,天线具有良好的性能,从而拓宽了该准八木天线的应用范围,而且紧凑的结构和较小的尺寸便于天线组阵。The structure of Quasi-Yagi antenna on Ramadan A. Alhalab＇s antenna is improved in this paper. The par- asitic patches and coupling patches are used in this modified antenna to improve the bandwidth. The director elements at the back of the antenna are designed to improve the gain. In addition, the shape of feed network is amended to reduce the size of antenna. The relative bandwidth of the antenna is broadened by these design measures. The antenna is tested by the simula- tion calculation of Ansoft HFSS and practical measurement. Results indicate that the structure of antenna is reasonable and its relative bandwidth is greater than 20% （VSWR≤2）and its gain at 2.4GHz is greater than 10dB. In a word, it has superi- or performance. The range of application is broadened. The compact structure and small size is useful for the antennas ar- ranged also.

关 键 词：准八木天线 相对带宽 微带天线 

分 类 号：TN823.17[电子电信—信息与通信工程]