The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Cylindrical Hybrid Antenna for Shaping Complex Beam Patterns

복합 빔 패턴 형성을 위한 원통형 하이브리드 안테나

  • Published : 2007.11.30
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Abstract

In this paper, a cylindrical hybrid antenna which is spatially fed by an off-set linear feed array is described to form complex beam patterns. The linear feed array consists of twelve micro-strip patch elements and forms a flat-topped beam pattern with a beam-width of $90^{\circ}$ in the horizontal plane. The vertical curve on the cylindrical reflector with the linear feed array is shaped in order to form a cosecant beam pattern within the range of $-5^{\circ}$ to $-25^{\circ}$ in the vertical plane. To form complex beam patterns, the hybrid antenna with cylindrical reflector aperture of $140{\times}50\;cm$ was designed and fabricated to be operated within the IMT 2000 service band, and also electrical performances of the antenna were measured and analyzed.

본 논문에서는 복합 빔 패턴들을 형성하기 위해 오프셋 선형 급전 배열에 의해 공간 급전되는 원통형 하이브리드 안테나에 대하여 기술한다. 선형 급전 배열은 12개의 마이크로스트립 패치 소자들로 구성되며, 수평면에서 $90^{\circ}$의 구형 빔 패턴을 형성한다. 그리고, 수직면에서 $-5^{\circ}{\sim}-25^{\circ}$ 범위에 걸쳐 코씨컨트 빔 패턴을 형성하기 위해 선형 급전 배열에 의해 원통형 반사판상의 수직 곡선이 성형화 된다. IMT-2000 서비스 대역에서 동작하는 $140{\times}50\;cm$ 크기의 원통형 반사판 개구면을 갖는 하이브리드 안테나 시제품을 설계 및 제작하였으며, 또한 안테나의 전기적 성능들을 측정하고 그 결과들을 분석하였다.

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References

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