具有四陷波特性的小型化超宽带天线设计  

Design of miniaturized ultra-wideband antenna with four-trap baud characteristics

作　　者：南敬昌[1] 杨清淞 彭力 徐维[1] NAN Jing-chang;YANG Qing-song;PENG Li;XU Wei(School of Electronics and Information Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院,辽宁葫芦岛125105

出　　处：《磁性材料及器件》2024年第4期37-42,共6页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金项目(61971210,61701211);辽宁省应用基础研究计划项目(2022JH2/101300275)。

摘　　要：为避免通信过程中所存在的窄带通信频段的干扰,提出一款具有小型化四陷波特性的超宽带(ultrawideband,UWB)天线。该天线的辐射贴片采用半圆与矩形构成的特殊图形,并进行切角,在接地板的改进中采用可以有效扩展该天线在高频带宽的阶梯型结构。为了达到小型化以及四陷波特性,在尺寸仅为19.5 mm×18 mm×1.6mm的天线的辐射贴片上进行陷波处理。仿真表明:此天线在4.1~4.5 GHz、4.9~5.85 GHz、7.15~7.75 GHz、以及7.96~8.55 GHz的频段回波损耗大于-10 dB,能够有效抑制数字微波通信频段波段、WLAN波段、X波段以及国际电信联盟波段对于信号传输的干扰,陷波后天线工作带宽达到3.5~10.6 GHz,可以广泛投入到UWB通信的应用,且陷波特性良好,四陷波特性也扩大了通信应用的领域,可以满足多种超宽带通信系统的应用。A compact ultra-wideband(UWB) antenna with miniature quadruple notch characteristics is proposed to mitigate interference in narrowband communication frequency bands.The radiating patch of the antenna adopts a special structure composed of a semi-circle and a rectangle,with chamfers introduced.The ground plane is improved using a stepped structure to effectively extend the bandwidth of the antenna at high frequencies.To achieve miniaturization and quadruple notch characteristics,the notch treatment is applied on the radiating patch of the antenna,which has dimensions of only 19.5 mm×18 mm×1.6 mm.Simulation results demonstrate that the antenna exhibits a return loss greater than-10 dB in the frequency bands of 4.1 to 4.5 GHz,4.9 to 5.85 GHz,7.15 to 7.75 GHz,and 7.96 to 8.55 GHz,effectively suppressing interference from digital microwave communication,WLAN,X-band,and International Telecommunication Union bands.With a bandwidth of 3.5~10.6 GHz after the notch treatment,the antenna can be widely used in UWB communication applications.The notch characteristics are well-maintained,and the quadruple notch characteristics expand the application scope of the antenna in communication systems,meeting the requirements of various UWB communication systems.

关 键 词：超宽带天线 四陷波 “U”形窄缝隙 钩形枝节 阶梯型接地板 

分 类 号：TN822.8[电子电信—信息与通信工程]