Large-Element-Spacing Array Design Algorithm for Rotated Subarray via Alternating Iterative Convex Optimization

This paper introduces a novel optimization method for designing rotated subarrays. Rotated subarrays typically employ modular configurations with large element spacing to enable cost-efficient phased array implementations. The main challenge is reducing grating lobes caused by the large spacing, whi...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation p. 1
Main Authors Yang, Gongqing, Xu, Zhenhai, Dong, Wei, Zeng, Hui, Li, Xinxin
Format Journal Article
LanguageEnglish
Published IEEE 2025
Subjects
Alternating Iterative Convex Optimization
Apertures
Convex functions
Costs
Grating lobes suppression
Gratings
Large element spcaing
Linear programming
Optimization
Optimization models
Phased arrays
Rotated subarray
Subarray technique
Translation
Vectors
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ISSN0018-926X
1558-2221
DOI10.1109/TAP.2025.3594539

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Summary:This paper introduces a novel optimization method for designing rotated subarrays. Rotated subarrays typically employ modular configurations with large element spacing to enable cost-efficient phased array implementations. The main challenge is reducing grating lobes caused by the large spacing, which is a complex optimization problem. By carefully redesigning the optimization model, this non-convex problem is transformed into a convex form that can be solved efficiently. Numerical results demonstrate superior grating lobe suppression compared to existing methods, while full-wave electromagnetic simulations validate the approach.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2025.3594539