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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Development of Polarization-Controllable Active Phased Array Antenna for Receiving Satellite Broadcasting

편파가변 위성 방송 수신용 능동 위상 배열 안테나 개발

  • Received : 2018.03.16
  • Accepted : 2018.05.03
  • Published : 2018.05.31
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Abstract

We herein present a study on the active phased array antenna for receiving satellite broadcasting that can electrically align its polarization to that of target transmitters in its moving condition or in the Skew angle arrangement of the broadcasting satellite receiver. Hence, we have developed an active phased array structure composed of the self-developed Vivaldi antenna and multifunction core (MFC) chip, receiving RF front end module, and control units. In particular, the new Vivaldi antenna designed in the Ku-band of 10.7 - 14.5 GHz to receive one desired polarization mode such as the horizontal or vertical by means of an MFC chip and other control units that can control the amplitude and phase of each antenna element. The test results verified that cross-polarization property is 20 dB or higher and the primary beam can be scanned clearly at approximately ${\pm}60^{\circ}$.

본 논문에서는 이동체의 움직임 및 그에 따른 편파 도래각 변화에 대응 가능한 위성 수신용 능동 위상 배열 안테나를 개발하도록 한다. 이를 위하여 이중편파를 10.7~14.5 GHz의 Ku 대역에서 동시에 구현 가능한 비발디 안테나와 효과적으로 위상 및 이득을 제어할 수 있는 MFC(Multi-Function Core) 칩을 자체 개발하였으며, 이를 이용하여 수신 모듈과 제어 모듈로 이루어진 능동 위상 배열 안테나를 제작하였다. 제작 결과, $60^{\circ}$ 각도까지의 깨끗한 빔 조향 특성과 높은 격리도의 편파 가변 특성을 확인하였다.

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References

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