Miniaturized double-layer EBG structures for broadband mutual coupling reduction between UWB monopoles

Qian Li, Alexandros P. Feresidis, Marina Mavridou, Peter S. Hall

Research output: Contribution to journalArticlepeer-review

146 Citations (Scopus)
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Novel miniaturized two-layer electromagnetic band gap (EBG) structures are presented for reducing the electromagnetic coupling between closely spaced ultra wideband (UWB) planar monopoles on a common ground. The proposed EBG structures employ two closely coupled arrays, one comprising linear conducting patches and the other comprising apertures (slits) in the ground plane. The two arrays are printed on either side of a very thin dielectric layer (55μm) with a rotation between the elements to produce maximum coupling for miniaturizing. A microstrip line excitation is initially used for the efficient analysis and design of the slit-patch EBG structures, which are subsequently employed between two UWB printed monopoles. The proposed EBG structure has a small footprint and produces a significant reduction of the mutual coupling across the wide operating band of the UWB antennas. Simulated results and measurements of fabricated prototypes are presented.

Original languageEnglish
Article number7001573
Pages (from-to)1168-1171
Number of pages4
JournalIEEE Transactions on Antennas and Propagation
Issue number3
Publication statusPublished - 1 Mar 2015


  • Electromagnetic band gap
  • MIMO antennas
  • miniaturization
  • Mutual coupling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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