A Three-Port MIMO Dielectric Resonator Antenna Using Decoupled Modes

Ahmad Abdalrazik, Anwer S.Abd El-Hameed, Adel B. Abdel-Rahman

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


In this letter, we propose a three-port multiple-input-multiple-output (MIMO) dielectric resonator antenna using three mutually decoupled and near-degenerate modes for X-band applications. To achieve decoupling, two of the three excited modes are chosen such that there is low mutual spatial overlapping between their field magnitudes; then, a third mode is imposed such that its field components are perpendicular to the other two modes. The impedance bandwidths of the three ports are 880 MHz, 870 MHz, and 2.61 GHZ, respectively, where contiguous bandwidth for the third port is achieved by utilizing the overlap of two resonances of $TE-{2 \delta 1}^{y}$ mode. The proposed antenna could be used either as a three-port MIMO antenna with operating bandwidth of 720 MHz, or as a two-port MIMO antenna with operating bandwidth of 880 MHz, at center frequency of 9.48 GHz. The gains of the three patterns at center frequency are 8.1 dB, 7.5 dB, and 7.4 dB, respectively.

Original languageEnglish
Article number8068182
Pages (from-to)3104-3107
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2017 Oct 13
Externally publishedYes


  • Decoupled modes
  • dielectric resonator antenna (DRA)
  • multiple-input-multiple-output (MIMO)
  • optimization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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