具有五陷波的超宽带天线设计  

Design of Ultra-wideband Antenna with Five Band Notched

作　　者：彭力 南敬昌[1] 杨清淞 王艺扉 PENG Li;NAN Jingchang;YANG Qingsong;WANG Yifei(School of Telecommunications,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电信学院,辽宁葫芦岛125105

出　　处：《无线电工程》2024年第5期1270-1276,共7页Radio Engineering

基　　金：国家基金项目(6197121)。

摘　　要：设计了一款具有五陷波特性的小型化超宽带天线,通过改变陷波结构参数和分析天线表面的电流分布,研究了陷波结构对超宽带及陷波特性的影响。天线尺寸仅为25 mm×20 mm×1 mm。辐射贴片由矩形和圆形贴片组成,背板通过切角挖槽实现了超宽带特性;添加对称钩型枝节,蚀刻U型槽及3类U型槽产生5个陷波。天线的工作带宽在3.8~16 GHz。有效抑制了国际卫星波段(4.5~4.8 GHz)、WLAN下行波段(5.15~5.35 GHz)、UNII-2c(5.47~5.725 GHz)、WLAN上行波段(5.725~5.825 GHz)、下行卫星系统频段(7.25~7.75 GHz)、上行卫星系统频段(7.9~8.4 GHz)、国际电信联盟频段(8.01~8.50 GHz)的干扰。天线在工作频带内具有全向性,增益平均在4 dBi以上。仿真和实测结果基本吻合,表明该天线可用于超宽带通信系统。A miniaturized ultra-wideband antenna with five band notched characteristics is designed.By changing the notch structure parameters and analyzing the current distribution on the antenna surface,the influence of the notch structure on the ultra-wideband and notch characteristics is studied.The antenna size is only 25 mm×20 mm×1 mm.The radiation patch is composed of rectangular and circular patches,and the backplane achieves ultra-wideband characteristics by chamfering and slotting.The symmetrical hook-type branches are added and U-shaped grooves and three U-shaped grooves are etched to produce five band notched.The operating bandwidth of the antenna is 3.8~16 GHz.It effectively suppresses the interference of international satellite band(4.5~4.8 GHz),WLAN downlink band(5.15~5.35 GHz),UNII-2c(5.47~5.725 GHz),WLAN uplink band(5.725~5.825 GHz),downlink satellite system band(7.25~7.75 GHz),uplink satellite system band(7.9~8.4 GHz)and International Telecommunication Union band(8.01~8.50 GHz).The antenna is omnidirectional in the operating frequency band,and the average gain is above 4 dBi.The simulated and measured results are basically consistent,indicating that the antenna can be used in ultra-wideband communication systems.

关 键 词：超宽带天线 五陷波 U型槽 钩形枝节 全向性 

分 类 号：TN823.24[电子电信—信息与通信工程]