应用于火灾探测的超宽带共面波导结构天线的设计  

The Appliance of Design on an Ultra-Wideband Printed Dipole Antenna in Fire Detection

作　　者：晁跃川 胡少文[2] 周辉林[2] 吴毅强[2] 

机构地区：[1]新疆博州公安消防支队,新疆博乐833400 [2]南昌大学电子信息工程系,南昌330031

出　　处：《电子器件》2013年第5期647-650,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61062009)

摘　　要：设计了一款应用在火灾探测的共面波导馈电的新型超宽带平面天线,该天线印刷在介电常数为4.4的FR4覆铜介质基板上,尺寸为18 mm×28.5 mm×1.6 mm。利用仿真软件HFSS对天线参数进行仿真和优化。结果表明,通过在共面波导地面上刻蚀对称结构的多边形槽,天线频带宽度达到3.4 GHz^17.4 GHz(S11<-10 dB),相对带宽达135%。按照优化尺寸对天线进行加工,实测数据与仿真值基本吻合表明该天线不仅可以实现超宽频带,而且结构简单,尺寸小,易于集成。该天线具有良好的方向图和增益性能,满足超宽带天线性能要求。The appliance of a CPW-fed novel planar ultra-wideband antenna in fire detection was designed. The antenna was etched on a copper-cladding substrate（ 18 mm × 18. 5 mm × 1. 6 mm）,whose material was FR4 with relative permittivity of 4. 4. The parameters of the antenna were simulated and optimized with HFSS. The results show that the bandwidth（ return loss≤- 10 dB） is from 3. 4 GHz ~ 117. 4 GHz that means a relative bandwidth of 135%by an symmetrical polygon notch cut in the ground of the CPW. According to the optimization of the size of the antenna for processing,the measured data and the simulation data is consistent,which shows that the proposed antenna can not only realize the ultra-wideband,and simple structure,small size,and integration with ease. The antenna has good gain and radiation performance and meets the requirements of the ultra-wideband antenna.

关 键 词：超宽带天线 共面波导 耦合 HFSS仿真 火灾探测 

分 类 号：TN92[电子电信—通信与信息系统]