Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (1): 1-7.doi: 10.3969/j.issn.1000-565X.2013.01.001

• Electronics, Communication & Automation Technology •     Next Articles

Design of Notched Ultra-Wideband Antenna with Controllable Stopbandand Corresponding Time Domain Analysis

Chu Qing-xin  Yang Guang  Mao Chun-xu   

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2012-03-31 Revised:2012-08-20 Online:2013-01-25 Published:2012-12-03
  • Contact: 褚庆昕(1958-),男,教授,博士生导师,主要从事射频器件及电路理论与技术、计算通信电磁学、现代通信天线研究. E-mail:qxchu@scut.edu.cn
  • About author:褚庆昕(1958-),男,教授,博士生导师,主要从事射频器件及电路理论与技术、计算通信电磁学、现代通信天线研究.
  • Supported by:

    国家自然科学基金资助项目(61171029)

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Abstract:

As the conventional notched antennas realize band-notched characteristic only at a single frequency, amicrostrip-fed notched ultra-wideband (UWB) antenna with controllable notched bandwidths and a high rectangulardegree is proposed and implemented by using open-end slots. The band-notched characteristic is realized by addingtwo L-shaped open-end slots on the U-shaped radiator patch and one U-shaped slit on the feed line of the proposedantenna, and the notched bandwidths are controlled by adjusting the coupling distance between the slots and theslit. With these schemes, the proposed antenna achieves a well-matched broadband impedance in the bandwidthregion of 3.1 ~10.6GHz except the rejection bandwidth region of 5.1 ~ 5.8GHz. The time-domain behaviors of theproposed antenna are then analyzed and the correlation coefficient as well as the pulse-width stretch ratio is calculated.The measured results accord well with the simulated ones, which means that the proposed antenna is suitable forUWB applications.

Key words: wireless local area networks, ultra-wideband antenna, controllable notched bandwidth, time domainanalysis, correlation coefficient, pulse-width stretch ratio

CLC Number: