Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Antenna Array Calibration for Digital Beamforming

디지털 빔 형성을 위한 배열 안테나 오차 보정

  • Choi, Hee-Young (Department of Electronic and Electrical Engineering Pohang University of Science and Technology) ;
  • Park, Hyung-Geun (Department of Electronic and Electrical Engineering Pohang University of Science and Technology) ;
  • Kim, Young-Soo (Department of Electronic and Electrical Engineering Pohang University of Science and Technology)
  • 최희영 (포항공과대학교 전자전기공학과) ;
  • 박형근 (포항공과대학교 전자전기공학과) ;
  • 김영수 (포항공과대학교 전자전기공학과)
  • Published : 2003.11.15
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Abstract

There are many antenna array errors. They will distort the array beam pattern and result in an increased sidelobe level. A calibration technique is proposed for correcting the antenna array errors such as mutual coupling and unequal feeder characteristics. These are modeled as a matrix representing the interaction between the radiating elements. The matrix is estimated from the measured array response vectors. The antenna array errors are corrected by modifying the beamforming weight vector. It is verified by the electromagnetic simulation and experiment that the proposed technique reduces the sidelobe level and increases the antenna gain.

Keywords