The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Design of Frequency-Selective Reflector for Large Reflecting Antennas using a Periodic Dielectric Layer

주기적인 유전체 층을 사용한 안테나용 주파수 선택 반사기의 설계

  • 호광춘 (한성대학교 정보통신공학과)
  • Received : 2010.01.28
  • Published : 2010.02.28
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Abstract

This paper examines the feasibility of using periodically varying dielectric layers with dielectric constant ${\epsilon}_1$ and ${\epsilon}_2$ at millimeter wave frequency for implementing the frequency-selective reflectors that permit feed separation in large aperture reflecting antenna systems. For oblique incidence, it is found that the total reflection can be obtained at different frequencies for proper choices of ${\epsilon}_1$, ${\epsilon}_2$ and the geometric parameters. In the frequency-selective reflector designed, the bandwidth for 90% reflection is always found to be much narrower than that for 90% transmission.

본 논문은 유전률 ${\epsilon}_1$과 ${\epsilon}_2$로 구성된 주기적인 유전체 층을 사용하여 밀리미터 주파수 대역의 주파수 선택 반사기를 설계할 수 있음을 분석하였다. 임의의 각도에서 입사한 밀리미터파에 대하여 유전률 ${\epsilon}_1$, ${\epsilon}_2$와 주기적인 구조를 구성하는 변수들을 적합하게 선택함으로써 원하는 주파수의 밀리미터파를 전반사시키는 반사기 설계가 가능함을 보였다. 설계된 반사기에서 약 90%의 전반사를 위한 대역폭이 약 90%의 전투과를 위한 대역폭보다 매우 좁은 협대역 특성을 나타내었다.

Keywords

References

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