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원형 섹터가 추가된 DTV용 광대역 정사각형 루프 안테나

Wideband Square Loop Antenna with Circular Sectors for Digital TV

  • Yeo, Junho (School of Computer and Communication Engineering/Information and Communication Research Center, Daegu University) ;
  • Lee, Jong-Ig (Division of Mechatronics Engineering, Dongseo University)
  • 투고 : 2016.06.24
  • 심사 : 2016.07.06
  • 발행 : 2016.10.31

초록

본 논문에서는 DTV용 광대역 정사각형 루프 안테나에 대한 설계 방법에 대하여 연구하였다. 제안된 루프 안테나는 정사각형 루프 안테나와 중앙 급전점을 연결하는 원형 섹터가 결합된 형태이다. 안테나의 크기를 소형화하기 위해 원형 루프 대신에 사각형 루프를 사용하였다. DTV응용을 위해 75옴 포트 임피던스와 정합하도록 입력 반사계수와 이득 특성을 분석하였다. 원형 섹터 사이의 간격과 정사각형 루프의 길이 변화에 따른 입력 반사계수와 이득 특성을 분석하여 최적의 설계 변수를 도출하였다. 최적화된 안테나를 FR4 기판에 제작하고 특성을 실험한 결과, 전압 정재파비(VSWR; voltage standing wave) < 2인 대역이 468-1,268 MHz으로 DTV 대역(470-806 MHz)에서 동작하는 것을 확인하였다.

In this paper, a design method for a wideband square loop antenna for Digital TV applications is studied. The proposed loop antenna is a square loop antenna combined with circular sectors to connect with central feed points. The square loop is used instead of the circular loop in order to miniaturize the antenna size. The input reflection coefficient and gain characteristics of the proposed antenna are analyzed to match with the 75 ohm port impedance for DTV applications. The effects of the gap between the circular sectors and the length of the square loop on the input reflection coefficient and gain characteristics are examined to obtain the optimal design parameters. The optimized antenna is fabricated on an FR4 substrate, and the experiment results show that it operates in the frequency band of 470-1,300 MHz for a VSWR < 2, which assures the operation in the DTV band.

키워드

참고문헌

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피인용 문헌

  1. 실내 디지털 TV용 CPW-급전 광대역 루프 안테나 vol.21, pp.8, 2017, https://doi.org/10.6109/jkiice.2017.21.8.1492