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 Wideband Planar Inverted-F Antenna Using Two-Layer Patches and Modified Ground Structure

이중층 패치와 부분 제거된 접지면을 이용한 광대역 평판형 역 F 안테나의 설계

  • Lee, Kwang-Jae (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Young-Hee (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Kang, Yeon-Duk (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Taek-Kyung (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
  • 이광재 (한국항공대학교 항공전자 및 정보통신공학부) ;
  • 이용희 (한국항공대학교 항공전자 및 정보통신공학부) ;
  • 강연덕 (한국항공대학교 항공전자 및 정보통신공학부) ;
  • 이택경 (한국항공대학교 항공전자 및 정보통신공학부)
  • Published : 2007.09.30
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Abstract

In this paper, we proposed a wideband design of planar inverted-F antenna(PIFA) using two-layer, patches and modified ground structure. The antenna consists of two layer patches with common feed and modified ground plane to control resonance frequency and antenna input impedance. The measured bandwidth is 1,492 MHz(BW: 67.7 %, 1,457${\sim}2,949$ MHz) for VSWR<2, and 1,170 MHz(BW: 21 %, 4,970${\sim}$6,140 MHz) for VSWR<2.5. It covers service bands of DCS1800, DCS1900, UMTS(WCDMA), WiBro, WLAN(IEEE 802.11b), satellite DMB. WLAN(IEEE 802.11a) in Korea and radiation patterns shows constant figure with frequency change.

본 논문에서는 이중층의 패치와 제거된 접지면을 이용하여 광대역 평판형 역 F 안테나(PIFA)를 설계하였다. 제안된 안테나는 급전부를 공유하게 한 이중 층 패치의 슬릿을 통해 공진점을 조절하였고 접지면을 부분 제거하여 임피던스 정합을 개선하였다. 대역폭은 VSWR 2 이하 기준 1,492 MHz(BW: 67.7 %, 1,457${\sim}$2,949 MHz)와 VSWR 2.5 이 하 기준 1,170 MHz(BW: 21 %, 4,970${\sim}$6,140 MHz)를 얻었다. 이는 DCS 1800, DCS1900, UMTS (W-CDMA), WiBro, WLAN(IEEE 802.11b), Satellite DMB, WLAN (IEEE802.11a) 총 7개의 무선 통신 서비스를 만족한다. 방사 패턴은 전 방향에서 신호의 송수신이 가능하였고 대역 내에서 주파수별 서로 유사한 형태를 가졌다.

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References

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