一种可应用于物联网的高增益双频定向天线的设计与分析  

Design and analysis of a high-gain dual-band directional antenna used for IoT

作　　者：张梦怡 王田[2] ZHANG Mengyi;WANG Tian(College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211800,China;School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]南京工业大学电气工程与控制科学学院,江苏南京211800 [2]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《现代电子技术》2018年第23期6-8,12,共4页Modern Electronics Technique

摘　　要：设计了一种高增益印刷型双频定向天线,天线采用微带耦合馈电的方式进行馈电,其包含一个长的和一对短的印刷型对称振子,分别谐振在低频和高频频段,因而该天线可以同时工作在两个工作频段,大大提高了天线的集成度。天线的辐射振子和馈电都印刷在同一块微波板材上,从而方便了天线的制作和加工。通过将天线放置在一个金属腔体内,更进一步提高了天线的定向性和增益。仿真结果表明,该天线在2.4～2.5 GHz以及5.0～6.0 GHz频带范围内能实现良好的定向辐射特性,天线的增益分别能达到9 dB和10.5 dB,具有高增益、低副瓣、结构紧凑、双频工作等优点,可以广泛应用于物联网系统中。A high-gain printed dual-band directional antenna is designed,which is fed with microstrip coupled feed mode.The antenna contains a pair of long symmetrical dipoles and a pair of short printed symmetrical dipoles,and their resonances appear on low and high frequency bands respectively.The antenna can work in two frequency bands simultaneously,which improves the antenna integration greatly.The radiation oscillator and feed structure of the antenna are printed on the same piece of microwave substrate for easily assembling and manufacturing of the antenna.The antenna located in a metal cavity can further improve its orientation and gain.The simulation results show that the antenna can realize the perfect directional radiation characteristic within 2.4~2.5 GHz and 5.0~6.0 GHz,and its gain can reach up to 9 dB and 10.5 dB respectively.The designed antenna has the advantages of high gain,low side-lobe,compact structure and dual-band working,and can be widely used in IoT(Internet of Things)system.

关 键 词：双频天线 定向天线 高增益天线 物联网 低副瓣 PCB技术 

分 类 号：TN911-34[电子电信—通信与信息系统]