Synthesis of Large Endfire Antenna Arrays using Convex Optimization

Jakob Helander, Doruk Tayli, Daniel Sjoberg

Research output: Contribution to journalArticlepeer-review

5 Citations (SciVal)

Abstract

An innovative approach utilizing convex optimization to simultaneously conduct pattern synthesis and improve the matching of large scale endfire antenna arrays is proposed in this paper. A fast full-wave analysis tool facilitates the computation of the necessary data for running the optimization routine, and enables analysis on arrays with dimensions 100λ × 6λ for the highest simulated frequency. Simulated results are provided for various array configurations of bowties, and the results show that improved matching can be obtained while maintaining a clear endfire far field pattern analogous to the pattern obtained with the classical Hansen-Woodyard excitation. The spatial dependence on the amplitude of the optimized input waves in the antenna ports indicate that a considerable fraction of the input power is fed to the antennas at the array’s front, in the direction of where the main lobe is launched.

Original languageEnglish
Pages (from-to)712-720
JournalIEEE Transactions on Antennas and Propagation
Volume66
Issue number2
Early online date2017 Dec 6
DOIs
Publication statusPublished - 2018 Feb

Subject classification (UKÄ)

  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Antenna arrays
  • Arrays
  • Convex functions
  • Convex optimization
  • endfire array antennas
  • large structures
  • macro basis function (MBF)
  • Mathematical model
  • Method of moments
  • mutual coupling
  • Pattern matching

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