Decoupling of Two Closely-Spaced Planar Monopole Antennas Using Two Novel Printed-Circuit Structures

Ayman A. Isaac, Hussain Al-Rizzo, Samer Yahya, Abbas Al-Wahhamy, Said Abushamleh

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


A new approach is presented in this paper to reduce mutual coupling between two closely-spaced planar monopole antennas. The approach employs either two parallel metallic strips or a single strip with a meander-shaped slotted pattern symmetrically placed between the two antennas with their edges being separated by 4 mm and 8 mm, respectively. The novel aspect of our approach is that the decoupling structures are not only confined in the space shared by the two planar monopole edges but are rather extended above the partial ground plane on one end and to the edge of the substrate on the other end. The design provided measured −10 dB impedance and − 20 dB decoupling bandwidths extending from 1.65 GHz to 4 GHz, and 1.43 GHz to 3.7 GHz, respectively, and the measured realized gains at 2.45 GHz are 3.81 dBi and 2.14 dBi, respectively. The proposed arrays offer excellent MIMO performance in terms of envelope correlation coefficient and link efficiency in realistic MIMO propagation environments through the decoupled frequency regimes.

Original languageEnglish (US)
Pages (from-to)2954-2963
Number of pages10
JournalMicrowave and Optical Technology Letters
Issue number12
StatePublished - Dec 2018
Externally publishedYes


  • 4G/5G LTE/LTE-A
  • MIMO
  • Mutual Coupling
  • Planar Monopole
  • Wi-Fi
  • WiMAX

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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