应用于WLAN/Wi-Fi/WiMAX系统的小型化双频带平面天线研究  

Research on compact dual-band planar antenna for WLAN/Wi-Fi/WiMAX systems

作　　者：李娜 王海华[1] LI Na;WANG Haihua(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255049

出　　处：《山东理工大学学报（自然科学版）》2022年第3期74-78,共5页Journal of Shandong University of Technology:Natural Science Edition

摘　　要：为了解决平面天线尺寸大、阻抗带宽窄的问题,采用弯折辐射枝节、表面开槽、加载倒T形枝节和金属过孔的方法,设计了一种能够应用于WLAN/Wi-Fi/WiMAX系统的小型化双频带平面单极子天线。该天线由微带馈线、介质基板与辐射单元组成,天线的主要辐射单元由与微带馈线相连接的开口环形枝节和通过金属过孔与地面相连接的U形枝节组成。通过对平面天线结构的研究以及优化仿真,最终得到了一个阻抗带宽为1.18 GHz(2.10~3.28 GHz)及1.24 GHz(5.18~6.42 GHz),并能有效覆盖WLAN的2.4 GHz(2.4~2.484 GHz)和5.8 GHz(5.725~5.825 GHz)、WiMAX的2.5 GHz(2.5~2.69 GHz)和5.5 GHz(5.25~5.85 GHz)以及Wi-Fi的2.4 GHz(2.4~2.485 GHz)和5.5 GHz(5.15~5.85 GHz)通信频段的平面单极子天线。In order to solve the problems of large size and narrow impedance band of planar antenna,this paper proposes a miniature dual-wall-band planar monopole antenna which can be applied to WLAN/Wi-Fi/WiMAX system by bending radiating branches,slotting the surface,loading inverted T-shaped branches and metal via.The antenna consists of a microstrip feedline,a dielectric substrate and a radiator.The main radiator of the antenna is composed of a split ring strip connected to microstrip feedline and a U-shape strip connected to the ground through metal vias.Through the research of planar antenna structure and optimised simulation,the planar monopole antenna with an impedance bandwidth of 1.18 GHz(2.10~3.28 GHz)and 1.24 GHz(5.18~6.42 GHz)is obtained,which can effectively cover 2.4 GHz(2.4~2.484 GHz)and 5.8 GHz(5.725~5.825 GHz)for WLAN.2.5 GHz(2.5~2.69 GHz)and 5.5 GHz(5.25~5.85 GHz)for WiMAX and 2.4 GHz(2.4~2.485 GHz)and 5.5 GHz(5.15~5.85 GHz)for Wi-Fi.

关 键 词：小型化 宽带 平面天线 单极子 双频带 

分 类 号：TN821[电子电信—信息与通信工程]