华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (5): 8-11.

• 电子、通信与自动控制 • 上一篇    下一篇

应用于WLAN/WiMAX的小型化全向三频天线

马汉清 褚庆昕   

  1. 华南理工大学 电子与信息学院, 广东 广州 510640
  • 收稿日期:2008-08-03 修回日期:2008-12-22 出版日期:2009-05-25 发布日期:2009-05-25
  • 通信作者: 马汉清(1980-),男,博士生,主要从事天线研究. E-mail:Vswr@163.com
  • 作者简介:马汉清(1980-),男,博士生,主要从事天线研究.
  • 基金资助:

    国家自然科学基金资助项目(U0635004,07118061)

Compact Omnidirectional Triple-Band Antenna Applied to WLAN/WiMAX

Ma Han-qing  Chu Qing-xin   

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-08-03 Revised:2008-12-22 Online:2009-05-25 Published:2009-05-25
  • Contact: 马汉清(1980-),男,博士生,主要从事天线研究. E-mail:Vswr@163.com
  • About author:马汉清(1980-),男,博士生,主要从事天线研究.
  • Supported by:

    国家自然科学基金资助项目(U0635004,07118061)

摘要: 针对现有小型化多频天线结构比较复杂、天线的全向特性不理想的问题,文中提出了一种可同时工作在WLAN(2.45GHz,5.15~5.85GHz)和WiMAX(3.50GHz)三个频段的天线.该天线采用了变形的顶加载单极天线结构,通过在非主极化方向上引入多频谐振支节,实现了在三个工作频率上的垂直极化全向辐射及高度仅10mrn、宽度仅13mm的小型化设计.实验结果表明,该天线在其3个工作频段内的回波损耗小于-10dB,实现了H面全向辐射,适合在移动环境中使用.

关键词: 天线, 移动通信, 多频天线, 全向天线, 小型化天线, 无线局域网

Abstract:

As the existing compact muhiband antennas are usually of complicated structure and unidirectional radia- tion, this paper presents a novel antenna applied to WLAN (2.45 GHz and 5.15 - 5.85 GHz) and WiMAX (3.50 GHz). The antenna is a monopole with modified top-loaded resonant structures that consist of folded strip lines in horizontal direction. It is compact in size with a height of only 10 mm and a width of only 13 mm. Moreover, it realizes the vertically-polarized omnidirectional radiation in the three operation bands. Experimental results show that the return loss of the antenna in the operation bands is less than - 10 dB, and that the antenna is suitable for mobile applications because it provides omnidirectional radiation patterns in the H-plane.

Key words: antenna, mobile communication, multiband antenna, omnidirectional antenna, compact antenna, wireless LAN