Coupling reduction between dipole antenna elements by using a planar meta-surface

Elena Saenz, Inigo Ederra, Ramon Gonzalo, Sergey Pivnenko, Olav Breinbjerg, Peter de Maagt

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The mutual coupling between dipole antenna array elements using a planar meta-surface as superstrate is experimentally investigated. The meta-surface is based on grids of short metal strips and continuous wires. A comparison between the mutual coupling when the dipoles are radiating in free space and in presence of the superstrate is presented. On average, between 3 to 14 dB reduction of the mutual coupling is achieved when the superstrate is used. The effect of the mutual coupling on the radiation performance of the array is studied by spherical near-field measurements of the radiation pattern when one driven dipole is fed and the others are matched with 50 Omega loads. The back-projected field on the aperture and on the E-plane is shown.
Original languageEnglish
JournalIEEE Transactions on Antennas and Propagation
Volume57
Issue number2
Pages (from-to)383-394
ISSN0018-926X
DOIs
Publication statusPublished - 2009

Keywords

  • Dipole antenna array
  • Mutual coupling
  • Meta-surface

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