陷波可重构的超宽带缝隙天线设计  

Design of UWB Slot Antenna with Reconfigurable Band-notch Characteristics

作　　者：陈菁 张骞 马润波[1] 韩丽萍[1] CHEN Jing;ZHANG Qian;MA Runbo;HAN Liping(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2019年第1期43-47,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61172045);山西省"1331工程"重点学科建设计划经费资助项目

摘　　要：本文提出一种陷波可重构的超宽带缝隙天线.采用六边形缝隙和带有矩形辐射枝节的渐变微带馈线实现超宽带.通过在馈线旁加载倒L型寄生单元及在矩形枝节刻蚀倒U型缝隙,天线分别实现WiMAX和WLAN频段的陷波.在寄生单元和倒U型缝隙上加载开关元件,控制开关的不同组合状态实现陷波可重构.天线的尺寸为24.5mm×20.5mm(0.40λg×0.33λg,λg为低频导波波长).仿真和测量结果表明:天线可以工作在超宽带、两个单频带陷波、一个双频带陷波4种工作模式.A ultra-wideband(UWB)slot antenna with reconfigurable band-notch characteristics is presented in this paper.A hexagonal slot and a tapered-shape microstrip feed-line with a rectangular radiating stub are employed to realize the UWB operation.The band-notch function in WiMAX and WLAN band is obtained by placing an inverted L-shaped parasitic structure beside the feed-line and etching an inverted U-shaped slot on the rectangular stub,respectively.The switches are loaded in the parasitic structure and inverted U-shaped slot,and then the reconfigurable band-notch capability is achieved by changing the combination states of control switches.The overall size of the antenna is 24.5 mm×20.5 mm.The simulated and measured results show that the antenna can operate in UWB,two single band-notch and a dual band-notch modes.

关 键 词：陷波 可重构 超宽带 缝隙天线 阻抗带宽 

分 类 号：TN823.24[电子电信—信息与通信工程]