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引用本文：

李智勇,刘运林,张倩,等.应用于无线USB的小型超宽带阻带天线[J].电讯技术，2011，51（12）： - . [点击复制]
LI Zhi-yong,LIU Yun-lin,ZHANG Qian,et al.A Small UWB Band-Notched Monopole Antenna for Wireless USB Applications[J].，2011，51（12）： - . [点击复制]

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应用于无线USB的小型超宽带阻带天线
李智勇,刘运林,张倩,王汇龙
0 字体:加大+\|默认\|缩小-
(西南交通大学电磁场与微波研究所，成都 610031)

摘要:

设计了一种用于超宽带无线通信系统的小型化天线。该天线贴片尺寸为20 mm×15 mm ×3 mm，采用U形折叠结构和渐变结构相结合，可使天线具有超宽带特性。为了减小对无线局域网（WLAN）系统5 GHz频带的干扰，天线采取了叉形谐振结构来实现对相应频带的抑制。采用仿真软件分析了该天线阻抗带宽和不同频点处的辐射方向图。仿真和实测结果显示，该天线在25～4.67 GHz和628～12 GHz内S11<-10 dB，在47～6.2 GHz内S11>-10 dB，因而有效产生带阻特性。

关键词: 超宽带天线带阻天线无线USB应用无线局域网

DOI：

基金项目:教育部科技创新基金资助项目

A Small UWB Band-Notched Monopole Antenna for Wireless USB Applications

LI Zhi-yong,LIU Yun-lin,ZHANG Qian,WANG Hui-long

(Institute of Electromagnetics,Southwest Jiaotong University,Chengdu 610031,China)

Abstract:

A small Ultra-wideband(UWB) Band-Notched monopole antenna for wireless USB applications is designed in this paper. The whole size of this antenna patch is 20 mm×15 mm×3 mm. With a U-shape folding patch and aperture type p atch, the a ntenna has characteristic of UWB. To reduce the interface with WLAN(Wireless Local Area Network) system in 5 G Hz band, a fork-shape structure is added in this antenna. The impedance bandwidt h and radiation patterns are simulated. Measured results show that the impedance bandwidth is less than -10 dB over an operating bandwidth of 2.5～4.67 GH z and 6.28～12 GHz. The tested S11 gets worse during 4.7～6.2 GHz， band-notch characteristics can be achieved effectively.

Key words: UWB antenna band-notched antenna wireless USB application WLAN