Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (9): 77-80,93.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

A Compact Planar Ultra-Wideband Antenna with Notch Characteristics

Chu Qing-xin  Yang Ying-ying    

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-10-12 Revised:2007-12-01 Online:2008-09-25 Published:2008-09-25
  • 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、计算通信电磁学和现代通信天线研究． E-mail:qxchu@seut．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、计算通信电磁学和现代通信天线研究．
  • Supported by:

    国家自然科学基金资助项目（U0635004,60571056）

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Abstract:

In order to minimize the potential interferences between the uhra-wideband system and the narrowband system, a compact coplanar waveguide fed planar antenna with band notch is presented for the uhra-wideband system. By taking the rectangular metal patch on a printed circuit board as the radiation element and by cutting a C-shaped slot in the rectangular patch, a frequency band notch is implemented. Simulated and measured results indicate that the proposed antenna yields an voltage-standing wave ratio （VSWR） of less than 2 in the impedance bandwidth range of 3.1 to 10.6 GHz, except the bandwidth of 5.0 - 6.0 GHz for band notch. Thus, the negative effect of WLAN on uhra-wideband system is eliminated and stable gain as well as good radiation patterns is obtained in the whole bandwidth range.

Key words: notched characteristic, coplanar waveguide, C-shaped slot, ultra-wideband antenna