Phase-Only Control of Peak Sidelobe Level and Pattern Nulls Using Iterative Phase Perturbations

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Abstract

Minimization of the maximum sidelobe level for a given array geometry, amplitude distribution, and nulling sectors by phase-only adjustment of the element coefficients is studied. Nonlinear optimization problem for phase distribution is solved using a novel iterative convex optimization algorithm, which includes mutual coupling effects and exploits small phase perturbations at each step. Superiority of the algorithm in terms of the peak sidelobe level and nulling depth achieved over several optimization methods reported in the most relevant literature is demonstrated in several case studies. Finally, a case study is performed to demonstrate added value of the algorithm for millimeter-wave fifth generation application with phase-only radiation pattern forming.

Original languageEnglish
Article number8818285
Pages (from-to)2081-2085
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume18
Issue number10
DOIs
Publication statusPublished - 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Convex optimization
  • Fifth generation (5G)
  • Interference minimization
  • Null steering
  • Phase tapering
  • Phase-only control
  • Phased arrays

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