一种新型小型双频微带天线的设计与分析

随着移动终端的发展,内置天线需达到小型化,低剖面,能工作在不同频段下。文中采用了弯折路径,开槽缝隙加载的方法设计一种新型双频微带天线。天线辐射贴片尺寸为30 mm×20 mm,工作频段分别为DCS1800（1.71～1.88 GHz）和WLAN（2.4～2.484 GHz）。利用三维高频结构电磁场仿真（HFSS10.0）进行了3D建模与电磁仿真分析研究。通过改变缝隙大小实现天线双频稳定工作。改进后的天线结构简单,性能良好,具有良好的应用前景。

Design and Analysis of a Novel Small Dual-frequency Microstrip Antenna

With the development of mobile terminal,the built-in antenna must be of small-size,low-profile geometry,and could work under different frequencies.In this paper,a novel dual-band micro-strip antenna is analyzed and designed by bending the patch and loading the aperture.The radiation size of the antenna is 30mm×20mm.The simulation result shows that the frequency channels of the antenna are DCS1800(1.71GHz-1.88GHz and WLAN(2.4GHz--2.484GHz).HFSS is employed for verification and optimization,thus to obtain design parameters of the antenna.The size of the aperture is changed,thus to achieve the stability of the dual-band micro-strip antenna.The improved antenna,with good application prospect,is simple in structure,and good in performance.