一种小型化双陷波可重构UWB天线设计  

A miniaturized UWB antenna with reconfigurable dual band notch characteristics

作　　者：李蕾[1] 季红妍 张舜 南敬昌[1] LI Lei;JI Hongyan;ZHANG Shun;NAN Jingchang(School of Electronic 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,葫芦岛市125105

出　　处：《电波科学学报》2021年第2期313-320,共8页Chinese Journal of Radio Science

基　　金：辽宁省自然科学基金指导计划(20180550282);国家自然科学基金(61971210);辽宁省特聘教授项目(551710007004)。

摘　　要：提出了一种小型化的双陷波可重构超宽带(ultra wide band,UWB)天线,通过在辐射贴片上刻蚀大、小两个C形槽,实现5G(3.3~4.4 GHz)/WiMAX(3.3~3.6 GHz)和WLAN(5.150~5.825 GHz)两个频段的陷波.采用两个PIN二极管跨接在C形槽上,通过控制PIN二极管的通断状态,在两个频段上实现陷波可重构.为了实现小型化,天线采用削顶圆形结构的辐射贴片,并将C形槽设计为嵌套结构,天线最终尺寸为18.0 mm×19.5 mm.仿真与测量结果表明:天线可以在UWB、两种单陷波和双陷波共四种状态下工作,UWB频段为3.1~11.0 GHz,两个单陷波频段分别为3.2~4.9 GHz、5.2~6.0 GHz,双陷波频段为3.25~4.75 GHz和5.3~6.1 GHz.天线的最大增益为2.8 dBi,具有良好的辐射特性.In this paper,a miniaturized ultrawideband(UWB)antenna with dual reconfigurable band notch characteristics is proposed.Band rejections at 5 G(3.3-4.4 GHz)/WiMAX(3.3-3.6 GHz)and WLAN(5.150-5.825 GHz)are obtained by introducing two C-shaped slots on the radiating patch of the antenna.Reconfigurable dual band notch function is achieved by integrating two PIN diodes on the slots.By etching a nested structure of C-shaped slots,an efficient top-cut circular-shaped radiating patch is designed,which realizes a compact size of 18.0 mm×19.5 mm.The proposed antenna operates in 4 states in the case of common interference scenarios.The simulated and experimental results show that the bandwidths of notch bands in single band notch states are 3.2-4.9 GHz and 5.2-6.0 GHz respectively,while the bandwidths of notch bands in dual band notch state are 3.25-4.75 GHz and 5.3-6.1 GHz.The antenna also exhibits a good radiation pattern with a maximum peak gain value of 2.8 dBi.dBi.

关 键 词：超宽带(UWB)天线 小型化 双陷波 可重构 PIN二极管 

分 类 号：TN82[电子电信—信息与通信工程]