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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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The Design of the Ultra-Wideband Slot Antenna by Using a Semi-Circular Extension

반원 확장을 이용한 초광대역 슬롯 안테나 설계

  • Lee Jung-Nam (Graduated School of Information & Communications, Hanbat National University) ;
  • Lee Hyo-Kyoung (Graduated School of Information & Communications, Hanbat National University) ;
  • Jang Hwa-Yeol (Graduated School of Information & Communications, Hanbat National University) ;
  • Park Jong-Kweon (Department of Radio Wave Engineering, Hanbat National University)
  • 이정남 (국립 한밭대학교 정보통신전문대학원) ;
  • 이효경 (국립 한밭대학교 정보통신전문대학원) ;
  • 장화열 (국립 한밭대학교 정보통신전문대학원) ;
  • 박종권 (국립 한밭대학교 정보통신컴퓨터공학부 전파공학전공)
  • Published : 2005.09.01
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Abstract

In this paper, we have proposed a Ultra-Wideband slot notch antenna by using a semi-circular extension. The proposed antenna cover the entire UWB band(3.1${\~}$10.6 GHz) and notch out the IEEE 802.1la frequency band(5.15${\~}$5.825 GHz) by inserting a $\lambda$/4 length slot into the patch. A prototype antenna was fabricated on FR-4( ${\epsilon}_r$ =4.4, substrate thickness=0.8 mm) and measured for VSWR characteristics. The measured notched frequency variations versus frequency for different slot length. The path loss and group delay were measured. The proposed antenna also show a good gain flatness(1.9 dBi) except the IEEE 802.1la frequency band.

본 논문에서는 반원 확장을 이용한 Ultra-Wideband(UWB)슬롯 놋치 안테나를 제안하였다. 제안된 안테나는 UWB 통신 주파수 대역인 3.1${\~}$10.6 GHz 대역을 만족했으며, IEEE 802.11a 주파수 대역인 5.15${\~}$5.825 GHz는 안테나 패치면에 형성한 $\lambda$/4 길이의 슬롯에 의해 필터링 되었다. 안테나는 유전율이 4.4이며 두께가 0.8 mm인 FR-4로 제작하였으며, VSWR 특성을 측정하였다. 슬롯의 길이 변화에 따른 놋치 특성을 측정하였으며, 경로 손실과 그룹딜레이를 측정하였다. 제안된 안테나는 IEEE 802.11a 주파수 대역을 제외하고는 평탄한 이득 변화량(1.9 dBi)을 나타내었다.

Keywords

References

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