A Method for Planar Phased Array Calibration

Lu, Yangyi; Zhou, Lei; Cui, Mantang; Du, Xiaoming; Hu, and Yongjun

doi:10.2528/pierl20090106

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Thus, phased array systems must get calibrated before operation. There has been great work to counter this problem, including rotating-element electric-field vector (REV) calibration method [4] and its improved versions [5][6][7], near-field measurement system-based method [8,9], phase-toggling method [10,11], and mutual coupling-based calibration [12,13].…”

Section: Introductionmentioning

confidence: 99%

An Approximate Closed-Form Solution of Compensating for Beam Pointing Error With Uniform Linear Arrays

Li¹,

Yu²,

Zhang³

et al. 2022

PIER M

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In phased array systems, beam pointing accuracy is one of the major issues for its great effect on radar communication. Regardless of the initial excitation error and the inherent mutual coupling between antenna elements, the anisotropy of antenna element's radiation pattern is the main reason for beam pointing error. In this paper, we propose a closed-form solution of compensating for beam pointing error with uniform linear arrays. It gives a theoretical explanation how beam pointing deviates from the desired angle when scanning angle and the number of elements vary. Then a numerical simulation validates the effectiveness of the proposed theory. Finally, an experiment with an X-band phased array verifies that the closed-form solution can be applied to practical phased array systems in the presence of mutual coupling.

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Section: Introductionmentioning

confidence: 99%

An Approximate Closed-Form Solution of Compensating for Beam Pointing Error With Uniform Linear Arrays

Li¹,

Yu²,

Zhang³

et al. 2022

PIER M

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show abstract

Probe distance error analysis for phased array calibration based on BTM

Lu¹,

Shi²,

Cui³

et al. 2021

Micro & Optical Tech Letters

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Based on backward transformation method (BTM), the probe distance error analysis in z‐axis for phased array calibration is described. When BTM is employed in phased array calibration to obtain the electric field over the radiation aperture of antenna, the Taylor expansion of probe distance error is used for analyzing the accuracy of reconstructed aperture field. It is found that probe distance error less than 1/35 of a wavelength is recommended. To verify this conclusion, the measured results demonstrate the validation of this analysis, which is helpful in the near‐field calibration for phased array.

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A Method for Planar Phased Array Calibration

Cited by 2 publications

References 12 publications

An Approximate Closed-Form Solution of Compensating for Beam Pointing Error With Uniform Linear Arrays

An Approximate Closed-Form Solution of Compensating for Beam Pointing Error With Uniform Linear Arrays

Probe distance error analysis for phased array calibration based on BTM

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