小型化多陷波新型超宽带天线设计与研究  

Design and research of new miniaturized multi-notch ultra-wideband antenna

作　　者：李国金[1] 林圣夫 南敬昌[1] 王艺扉 LI Guojin;LIN Shengfu;NAN Jingchang;WANG Yifei(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：《传感器与微系统》2023年第2期45-48,52,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61971210)。

摘　　要：提出了一种小型化新型多陷波超宽带(UWB)天线,陷波结构简单且紧凑,该天线体积仅为25 mm×18 mm×1 mm。天线由改进矩形辐射贴片和改进的半圆形接地板组成,天线的工作带宽为3.1~15.1 GHz。在辐射贴片上开U形窄缝隙和倒U形槽,实现了4.1~4.8 GHz频段和7.1~7.9 GHz频段的陷波特性,且在微带线上刻蚀U形窄缝隙,产生了5.4~5.9 GHz频段的陷波特性,通过优化测试表明,该天线能有效抑制INSAT波段(4.4~4.5 GHz)、国际卫星波段(4.5~4.8 GHz)波段、部分WLAN波段(5.725~5.825 GHz)以及X波段(7.25~7.75 GHz)多频段的窄带信号干扰。除陷波频段外,该天线具有良好的性能和全向辐射特性,适合应用于各类超宽带系统中。A new miniaturized multi-notch ultra-wideband(UWB)antenna is proposed,the notch structure is simple and compact,the antenna volume is only 25 mm×18 mm×1 mm.The antenna is composed of an improved rectangular radiating patch and an improved semicircular ground plate,and the working bandwidth of the antenna is 3.1~15.1 GHz.U-shaped narrow gaps and inverted U-shaped grooves are opened on the radiation patch to achieve the notch characteristics in the 4.1~4.8 GHz frequency band and 7.1~7.9 GHz frequency band,and the U-shaped narrow gap is etched on the microstrip line,resulting in notch characteristics of the 5.4~5.9 GHz frequency band,through optimization tests show that the antenna can effectively suppress the multi-band narrowband signal interference such as INSAT band(4.4~4.5 GHz),the international satellite band(4.5~4.8 GHz)band,some WLAN bands(5.725~5.825 GHz)and X-band(7.25~7.75 GHz).In addition to the notch frequency band,the antenna has good performance and omnidirectional radiation characteristics,and is suitable for use in various ultra-wideband systems.

关 键 词：超宽带天线 陷波特性 半圆形接地板 U形窄缝隙 全向辐射特性 

分 类 号：TN822.8[电子电信—信息与通信工程]