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 Research of Single Fed Broadband Planar Array Antenna with Modified Stacked-Structure using Circular Polarization

변형된 적층구조를 갖는 단일급전방식의 광대역 평판형 배열안테나 연구

  • 정영배 (한국전자통신연구원 안테나기술연구센터) ;
  • 이영환 (한국정보통신대학교 전자공학부) ;
  • 문정익 (한국정보통신대학교 전자공학부) ;
  • 박성욱 (한국정보통신대학교 전자공학부) ;
  • 하재권 (블루웨이브텔(주))
  • Published : 2001.10.01
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Abstract

This paper presents a wideband technique of impedance and axial-ratio bandwidth which uses the stacked planar array structure through optimum design of sub-polarization generating sections and parasitic patch. So, the effect of the dual-resonance characteristic can contribute to the bandwidth expansion of single fed planar array antenna using circular polarization which doesn\`t hire previous bandwidth expansion technique. The antenna can be used as a dual-band antenna by adjusting the resonance frequencies as well, and then the antenna is designed and fabricated in the frequency band of domestic satellite-TV service. This antenna has the performance of 9.7 % impedance bandwidth and 24 dBi of antenna gain. And it has also 2.8 % and 1.4 % of 3 dB Axial-ratio bandwidth at 11.4 GHz and 11.8 GHz respectively.

본 논문에서는 원형편파를 이용하는 적층구조의 광대역 평판형 배열안테나를 연구하였으며, 적층구조의 보조적인 편파유발부와 기생패치의 최적 설계를 통하여, 임피던스 및 축비특성에서의 이중공진특성을 구현하였다 따라서, 기존에 사용되고 있는 축비대역확장기법을 사용하지 않는 단일급전방식 원형편파용 평판안테나의 대역확장에 기여할 수 있으며, 공진주파수의 보정설계를 통하여 이중대역안테나로의 활용을 기대할 수 있다. 또한, 해당안테나를 국내 위성방송서비스대역에 적용하여 설계 및 제작하였으며, 임피던스대역폭 9.7%, 안테나 이득 24 dBi와 이중공진특성에 의한 2.8 %(11.4 GHz)와 1.4 %(11.8 GHz)의 3 dB 축비대역폭을 갖는다.

Keywords

References

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