Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 20, Issue 6, Pages 1063-1067Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2021.3071356
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)
Funding
- National Natural Science Foundation of China [61931015, 62071335]
- Science and Technology Program of Shenzhen [JCYJ20170818112037398]
- Technological Innovation Project of Hubei Province of China [2019AAA061]
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This letter proposes a calibration method for the uniform circular array (UCA) to jointly estimate array errors and antenna element patterns. The simulation and field experiments demonstrated the effectiveness of the proposed method.
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.
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