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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of a Half-Circle Shape UWB Antenna

반원 형태의 UWB 안테나 설계

  • Lee Hyo-Kyoung (Graduated School of Information & Communications, Hanbat National University) ;
  • Lee Jung-Nam (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)
  • 이효경 (국립 한밭대학교 정보통신전문대학원) ;
  • 이정남 (국립 한밭대학교 정보통신전문대학원) ;
  • 장화열 (국립 한밭대학교 정보통신전문대학원) ;
  • 박종권 (국립 한밭대학교 정보통신컴퓨터공학부)
  • Published : 2005.09.01
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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${\~}$10.6 GHz), 5.15 GHz${\~}$5.825 GHz frequency band is used by IEEE 802.1la WLAN applications. It may be necessary to notch out this band to avoid interference with IEEE 802.1la 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 802.1la WLAN frequency band and have a reasonable agreement with simulated results.

본 논문에서는 UWB 통신 시스템에서 사용될 수 있는 CPW 급전 구조를 이용한 평면형 반원 형태의 UWB 안테나를 설계, 제작 및 측정하였다. UWB 통신 주파수 대역(3.1 GHz${\~}$10.6 GHz) 내에 IEEE 802.1la(5.15 GHz${\~}$5.825GHz) WLAN 대역이 포함되어 있어 상호 간섭 문제가 발생할 수 있기 때문에 이 주파수 대역을 차단시킬 필요가 있다. 따라서 본 논문에서는 노치 기능을 갖는 세 종류의 rectangular 슬롯, hat-shaped 슬롯, circle- shaped 슬롯 UWB 안테나를 제안하였다. 제안한 안테나는 슬롯의 길이와 폭을 변화시켜 주파수 조정이 가능하다. 측정결과, IEEE 802.1la WLAN 대역을 제외한 나머지 대역에서는 무지향성을 갖는 평탄한 이득을 얻었으며, 시뮬레이션 결과도 잘 일치함을 확인하였다.

Keywords

References

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