2.4GHz频段倒F印刷天线的设计与研究  

Design and study of 2.4 GHz band inverted-F printed antenna

作　　者：蒋尚杰 王全宇[1] 陈小强[2] 田铭兴[2] 刘灼鹏 JIANG Shangjie;WANG Quanyu;CHEN Xiaoqiang;TIAN Mingxing;LIU Zhuopeng(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province,Lanzhou Jiaotong University,Lanzhou 730070,China;Eahison Commnuication Co Ltd,Foshan 528000,China)

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070 [2]甘肃省轨道交通电气自动化工程实验室(兰州交通大学),甘肃兰州730070 [3]粤海信通讯有限公司,广东佛山528000

出　　处：《传感器与微系统》2020年第10期39-41,共3页Transducer and Microsystem Technologies

基　　金：兰州市人才创新创业项目(2017-RC-51)。

摘　　要：设计了一种2.4 GHz频段下用于无线传感器的倒F印刷天线。天线的尺寸为25.7 mm×7.5 mm。使用3D电磁仿真工具HFSS13.0建模仿真;研究印刷电路板(PCB)的板厚H和天线自身的谐振长度L2变化对天线通信性能的影响,通过对两个参数的优化来获得最佳的设计效果。从仿真可知:在PCB厚度H为0.8 mm,谐振长度L 2为16.4 mm时,天线的谐振频率为2.45 GHz,回波损耗S 11为-25.3 dB,归一化输入阻抗为(0.9464+0.0920i)Ω。通过矢量网络分析仪实测后结果表明:在2.4 GHz下,该倒F天线获得了12.5%的相对带宽,驻波比约为1.7(VSWR小于2)。将此天线用于实际工程中,在CC2530芯片基础上,用Altium Designer设计出PCB图,实际作出带有倒F天线的无线网络节点并对两节点之间的通信距离进行了测试。A printed inverted-F antenna in 2.4 GHz is designed for wireless sensor networks(WSNs).The size of antenna is only 25.7 mm×7.5 mm.By using the 3D electromagnetic simulation tool HFSS13.0 modeling,the influence of parameters such as PCB thickness,and antenna size on the antenna is obtained,and thus different parameters is optimized to achieve the best design effect.When thickness of the PCB board H=0.8 mm,resonance length L 2=16.4 mm,the resonant frequency of the antenna is 2.45 GHz,echo loss S 11=-25.3 dB.Normalized input impedance is(0.9464+0.0920i)Ω.Experimental result indicates that under 2.4 GHz,relative bandwidth of 12.5%is obtained,and the standing wave ratio is approximate 1.7(VSWR<2).The antenna is used in practical engineering on the basis of CC2530 chip.PCB layout of the antenna is designed by using the tool of Altium Designer.The wireless network node with inverted-F antenna is actually manufactured and communication distance between two nodes is measured.

关 键 词：2.4GHz 倒F 印刷电路板 驻波比 

分 类 号：TN82[电子电信—信息与通信工程]