Mis-modeling and mis-correction of mutual coupling in an antenna array-A case study in the context of direction finding using a linear array of identical dipoles

Yue Ivan Wu, Gerald Pacaba Arada, Wai Yip Tam, Kainam Thomas Wong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

In an array of antennas, the inter-antenna electromagnetic mutual coupling, unless properly corrected, would degrade an antenna array's performance in direction finding. In the special case of a uniformly spaced linear array of identical antennas, Azarbar, Dadashzadeh & Bakshi have suggested discarding the antennas' collected data at both ends of the linear array, on the assumption that all middle antennas experience near-identical mutual coupling, as each middle antenna would have many antennas on either side. The antennas whose data will be discarded are called the 'auxiliary' antennas. While Azarbar, Dadashzadeh & Bakshi modeled the mutual coupling matrix as Toeplitz and banded, this key assumption is invalidated by simulations using the 'method of moments' (as realized in the software 'EMCoS Antenna VLab'). Using such more realistic values for the mutual coupling matrix for a uniform linear array (ULA) of identical dipoles, instead of the idealistic assumptions of a Toeplitz banded mutual coupling matrix, the method in Azarbar, Dadashzadeh & Bakshi's paper is found here to perform very poorly.
Original languageEnglish
Title of host publication2016 IEEE International Conference on Signal and Image Processing, ICSIP 2016
PublisherIEEE
Pages447-451
Number of pages5
ISBN (Electronic)9781509023769
DOIs
Publication statusPublished - 27 Mar 2017
Event2016 IEEE International Conference on Signal and Image Processing, ICSIP 2016 - Beijing, China
Duration: 13 Aug 201615 Aug 2016

Conference

Conference2016 IEEE International Conference on Signal and Image Processing, ICSIP 2016
Country/TerritoryChina
CityBeijing
Period13/08/1615/08/16

Keywords

  • Antenna array mutual coupling
  • antenna arrays
  • array signal processing
  • Direction-of-arrival estimation
  • electromagnetic coupling
  • signal processing antennas

ASJC Scopus subject areas

  • Signal Processing

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