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 Conical Spiral Antenna for Satellite TT&C Applications

위성 TT&C용 원뿔 나선 안테나 설계

  • Ko Han-Woong (School Electrical and Computer Engineering, Chungbuk University) ;
  • Lee Junwen (School Electrical and Computer Engineering, Chungbuk University) ;
  • Yu Jae-Deok (School Electrical and Computer Engineering, Chungbuk University) ;
  • Kim Se-Yon (Korea Aerospace Industries(KAI)) ;
  • Ahn Bierng-Chearl (School Electrical and Computer Engineering, Chungbuk University) ;
  • Park Dong-Hee (School of Electrical, Electronics and Information Engineering, Chungju University)
  • 고한웅 (충북대학교 전기전자컴퓨터공학부) ;
  • 리준문 (충북대학교 전기전자컴퓨터공학부) ;
  • 유재덕 (충북대학교 전기전자컴퓨터공학부) ;
  • 김세연 ((주)한국항공우주산업) ;
  • 안병철 (충북대학교 전기전자컴퓨터공학부) ;
  • 박동희 (충주대학교 전기전자 및 정보공학부)
  • Published : 2006.01.01
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Abstract

In this paper, we investigate the design and fabrication of a conical spiral antenna suitable for satellite TT&C applications. The shape of the spiral is optimized using a commercial electromagnetic software for good gain and axial ratio performances over $2.0{\sim}2.3\;GHz$ frequencies. A coaxial infinite balun feeding the spiral is designed using experimental methods. A method for precision fabrication of the spiral is presented. Measurements of the fabricated antenna show satisfactory performances over $2.0{\sim}2.3\;GHz$ such as a reflection coefficient less than -18 dB, a maximum gain greater than 4 dB, a gain greater than 0 dB over angles ${\pm}75^{\circ}$ from the antenna boresight, an axial ratio less than 5 dB over angles ${\pm}90^{\circ}$ from the antenna boresight, a front-back ratio greater than 15 dB.

본 논문에서는 인공위성의 원격 측정, 명령 및 제어(TT&C)용에 적합한 원뿔 나선 안테나의 설계 및 제작에 관해 검토하였다. $2.0{\sim}2.3\;GHz$ 대역에서 동작하며 반구면상에서 양호한 이득 특성과 축비 특성을 가지도록 나선의 형상을 상용 전자장 소프트웨어를 이용하여 최적 설계하였다. 원뿐 나선의 급전을 위한 동축선 무한 벌룬은 실험적인 방법으로 구현하였다. 설계된 나선의 형상을 정밀하게 제작하는 방법을 제시하였다. 설계한 안테나를 제작하여 측정한 결과 $2.0{\sim}2.3\;GHz$ 대역에서 -18 dB 이하의 반사 계수, 4 dB 이상의 이득, 이득이 0 dB 이상인 각도가 안테나 축으로부터 ${\pm}75^{\circ}$, 축비가 5 dB 이하인 각도가 안테나 축으로부터 ${\pm}90^{\circ}$, 15 dB 이상의 전후 방비 등 양호한 특성을 얻었다.

Keywords

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