摘要
随着移动终端的小型、多样化的发展,如何设计一个多频段、小尺寸、低剖面的内置天线成为移动终端天线设计的难点。以双分支平面倒F型天线为基础,通过增加寄生的短路分支,利用不同的路径分支激发各自频段的方式,实现在VSWR<3.0内涵盖GSM900、DCS、PCS三个操作频段的一款新颖的内置天线。天线由2个短路柱、1个馈电柱和在天线辐射体上切割裂缝与缝隙构成,并利用仿真环境HFSS进行3D建模与电磁仿真,仿真结果满足三频段天线的性能要求。
The design of a handset antenna with multiple/wide bands, small-size and low-profile geometry has become more and more difficult as mobile terminals are getting smaller and more diversified. The proposed method based on double-branch PIFA achieves a small- sized internal antenna and covers GSM/DCS/PCS bands with VSWR 〈 3.0 by adding a parasitic branch. The antenna is composed of two shorting posts, one feed post and several slits on the top patch. HFSS is employed for verification and optimization to obtain design parameters of the antenna. The simulation results show that the proposed antenna meets the system requirements in performance.
出处
《无线电工程》
2009年第9期31-32,60,共3页
Radio Engineering
