Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Design of Broadband Planar Dipole Antenna for Indoor Digital TV Reception

실내 디지털 TV 수신용 광대역 평면 다이폴 안테나 설계

  • Lee, Jong-Ig (Department of Electronics Engineering, Dongseo University) ;
  • Yeo, Junho (School of Computer and Communication Engineering, Daegu University) ;
  • Park, Jin-Taek (Department of Mobile Communication Engineering, Changshin University)
  • Received : 2014.01.13
  • Accepted : 2014.02.21
  • Published : 2014.03.31
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Abstract

In this paper, a design method for a broadband planar dipole antenna for terrestrial digital television (DTV) reception is studied. The dipole is modified to half bow-tie type for size reduction. The balun between feeding microstrip line and coplanar strip (CPS) line is implemented with a rectangular patch inserted along the center of the CPS line. The proposed antenna is the structure of dual resonances, one is due to the dipole and the other is due to the CPS line attached by the balun. The effects of various geometrical parameters on the antenna performance are examined, and the antenna is designed for terrestrial DTV band (470-806 MHz). The prototype antenna is fabricated on an FR4 substrate with a size of $95mm{\times}178mm$, and tested experimentally to verify the results of this study.

본 논문에서는 지상파 디지털 TV 수신용 광대역 평면 다이폴 안테나 설계 방법에 대해 연구하였다. 코플래너 스트립으로 급전되는 평면 다이폴을 반 보우-타이형으로 소형화하였다. 급전 마이크로스트립 선로와 코플래너 스트립 선로 간의 밸런은 코플래너 스트립 중앙으로 삽입된 직사각형 패치로 구현하였다. 제안된 안테나는 이중 공진 구조로서 다이폴에 의한 공진과 밸런이 부착된 코플래너 스트립 선로에 의한 공진으로 구성된다. 제안된 안테나의 파라미터들이 안테나의 특성에 미치는 영향을 분석하고 지상파 디지털방송 주파수 대역인 470-806 MHz 대역에서 동작하도록 설계하였다. 설계된 안테나를 $95mm{\times}178mm$ 크기의 FR4 기판 상에 제작 후 실험을 통하여 연구결과의 타당성을 검증하였다.

Keywords

References

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