A planar half-disk UWB antennas having a notch function

노치 기능을 가지는 반원 형태의 UWB 안테나

  • Lee, Hyo-K. (Graduate school of information & communications, Hanbat national university) ;
  • Jang, Mi-H. (Graduate school of information & communications, Hanbat national university) ;
  • Lee, Yoon-J. (Graduate school of information & communications, Hanbat national university) ;
  • Park, Jong-K. (Department of radio wave engineering, Hanbat national university)
  • 이효경 (국립 한밭대학교 정보통신 전문 대학원) ;
  • 장미희 (국립 한밭대학교 정보통신 전문 대학원) ;
  • 이윤정 (국립 한밭대학교 정보통신 전문 대학원) ;
  • 박종권 (국립 한밭대학교 전파공학과)
  • Published : 2005.11.05

Abstract

In this paper, a planar half-circle shape ultra-wideband(UWB) antenna fed by CPW is designed, fabricated and measured for UWB communications. Within the UWB band(3.1 GHz $\sim$ 10.6 GHz), 5.15 GHz $\sim$ 5.825 GHz frequency band is used by IEEE 802.lla WLAN applications. It may be necessary to notch out this band to avoid interference with IEEE 802.lla WLAN. Therefore, we have proposed three kinds of UWB antennas having a notch function, such as a rectangular slot, a hat-shaped slot, a circle-shaped slot. The notch frequency of the proposed antenna can be adjusted by controlling the slot length or slot width. From the measured results, the proposed antennas show a good gain flatness except the IEEE 802.lla WLAN frequency band and have a reasonable agreement with simulated results.

Keywords

Ultra-wideband(UWB) antenna;IEEE 802.lla WLAN;CPW;notch function;half-circle