The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Planar Monopole Antenna with Modified Ground Plane for UWB Communications

UWB 통신을 위한 변형된 접지 면을 갖는 평판형 모노폴 안테나

  • Kim, Hyun-Chul (Department of Electronics and Computer Engineering, Chonnam National University) ;
  • Jung, Jin-Woo (Department of Electronics and Computer Engineering, Chonnam National University) ;
  • Lee, Hyeon-Jin (Department of Electronics and Information, DongKang College) ;
  • Lim, Yeong-Seog (Department of Electronics and Computer Engineering, Chonnam National University)
  • 김현철 (전남대학교 전자컴퓨터공학과) ;
  • 정진우 (전남대학교 전자컴퓨터공학과) ;
  • 이현진 (동강대학 전기전자공학과) ;
  • 임영석 (전남대학교 전자컴퓨터공학과)
  • Accepted : 2010.12.27
  • Published : 2011.03.31
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Abstract

In this paper, we proposed the small planar monopole antenna with modified ground plane for UWB communications. The proposed antenna not only shows Ultra-Wideband characteristic(3.1~10.6 GHz) suitable for UWB communications but has partially notched-band characteristic to reject 5 GHz WLAN band(5.15~5.35 GHz, 5.470~5.825 GHz). The proposed antenna improved impedance matching through two slits on ground plane, and the rejection band was induced by two ${\lambda}$/4 open stubs on center of two slits. Fabricated antenna satisfied VSWR${\leq}$2 in 2.88~10.83 GHz except for the band rejection of 5.08~5.83 GHz.

본 논문에서는 UWB 통신을 위한 변형된 접지 면을 갖는 소형 평판형 모노폴 안테나를 제안하였다. 제안된 안테나는 UWB 통신에 적합한 초광대역 특성(3.1~10.6 GHz)을 만족하면서, 5 GHz WLAN 대역(5.15~5.35 GHz, 5.470~5.825 GHz)에 주파수 대역 저지 특성을 갖는다. 제안된 안테나는 접지 면에 두 개의 슬릿을 통해 임피던스 정합 특성을 향상시켰으며, 슬릿의 중앙으로부터 저지 대역의��${\lambda}$/4 길이를 갖는 두 개의 개방 스터브를 형성하여 주파수 대역 저지 특성을 유도하였다. 제작된 안테나는 저지 대역인 5.08~5.83 GHz를 제외하고, 2.88~10.83 GHz 대역에서 VSWR${\leq}$2를 만족한다.

Keywords

References

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