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2015-10-01
Mutual Coupling Calibration for L-Shaped Microstrip Antenna Array with Accurate 2-d Direction of Arrival Estimation
By
Progress In Electromagnetics Research Letters, Vol. 57, 9-16, 2015
Abstract
An improved mutual coupling calibration approach based on the element pattern reconstruction (EPR) method is proposed in this paper. Compared to previous calibration methods in which the calibration is carried out in the entire space, the space angle ranges to be calibrated in this method is partitioned according to the interested directions. Through the partition of the space angle region, the angle ranges to calibrate are narrowed, and thus more accurate calibration matrix can be obtained in corresponding angle regions. With the employment of the calibration matrix on 2-D DOA estimation, more effective mutual coupling calibration and more accurate DOA estimations are achieved by alternate iteration in each angle region. The validity of this method is verified by an L-shaped microstrip antenna array, and the performance of mutual coupling calibration is presented by the better accuracy in 2-D DOA estimations.
Citation
Jianhui Bao, Qiulin Huang, Xin Huai Wang, Peng Liu, and Xiao-Wei Shi, "Mutual Coupling Calibration for L-Shaped Microstrip Antenna Array with Accurate 2-d Direction of Arrival Estimation," Progress In Electromagnetics Research Letters, Vol. 57, 9-16, 2015.
doi:10.2528/PIERL15052401
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