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Array Errors and Antenna Element Patterns Calibration Based on Uniform Circular Array
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DOI：10.1109/LAWP.2021.3071356.png)
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Abstract
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The conventional calibration methods only took into account the mutual coupling (MC) and the gain/phase error. However, the antenna element pattern could also be an important factor in calibration as the antenna element pattern could be direction-dependent. This letter proposes a calibration method to jointly estimate array errors and antenna element patterns for the uniform circular array (UCA). The array errors are composed of MC and gain/phase error. The antenna patterns of different elements are presumed rotationally similar due to the structure of the UCA. The simulation and field experiments demonstrated the effectiveness of the proposed method.
Keywords:
Antenna arrays
Calibration
Directive antennas
Dipole antennas
Receiving antennas
Mutual coupling
Linear antenna arrays
Antenna pattern
calibration
direction-of-arrival (DOA) estimation
mutual coupling (MC)
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