Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)
- 2003.11a
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- Pages.501-505
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- 2003
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)
- Published : 2003.11.15
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.