Shaped Power Pattern Synthesis with Minimization of Dynamic Range Ratio

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

1 Scopus Citations
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Author(s)

  • Xuhui Fan
  • Junli Liang
  • Yuanhang Zhang
  • H. C. So
  • Xiaozhe Zhao

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number8633949
Pages (from-to)3067-3078
Journal / PublicationIEEE Transactions on Antennas and Propagation
Volume67
Issue number5
Early online date4 Feb 2019
Publication statusPublished - May 2019

Abstract

The problem of synthesizing array patterns while reducing dynamic range ratio (DRR) of complex excitations is of great importance in practical applications since it enables active arrays to be more attractive by appropriately controlling the mutual coupling between the neighboring elements, as well as reducing the cost and complexity of the feeding network design. Unlike the commonly adopted DRR control technique, this paper focuses on minimizing the DRR of the excitations while synthesizing the anticipated array pattern, which results in a new nonconvex and nonlinear optimization problem because of its fractional objective function and nonconvex constraints. By introducing auxiliary variables, we derive an equivalent optimization problem that transforms the fractional objective function into a linear one, decompose the original optimization problem into several subproblems in each iteration, and simplify them as either single-variable quadratic unconstrained optimization or least-squares problems that are solved efficiently in each iteration. Numerical results with different radiation requirements are shown to demonstrate the effectiveness of the proposed scheme.

Research Area(s)

  • Array pattern synthesis, dynamic range ratio (DRR), nonconvex, nonlinear optimization

Citation Format(s)

Shaped Power Pattern Synthesis with Minimization of Dynamic Range Ratio. / Fan, Xuhui; Liang, Junli; Zhang, Yuanhang; So, H. C.; Zhao, Xiaozhe.

In: IEEE Transactions on Antennas and Propagation, Vol. 67, No. 5, 8633949, 05.2019, p. 3067-3078.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review