A Polarizer Integrated Dielectric Resonator Antenna for Polarization Reconfigurability

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number8649590
Pages (from-to)2723-2728
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number4
Online published22 Feb 2019
Publication statusPublished - Apr 2019


In this communication, we introduce a p-i-n-diode-based polarizer integrated with a dielectric resonator antenna (DRA) to realize a polarization reconfigurability. The p-i-n-diode-based polarizer is found to be effective in altering the electromagnetic-field distribution of the DRA, such that the polarization of the DRA can be actively changed. Unlike conventional p-i-n-diode-based reconfigurable antennas, the proposed active polarizer would not degrade radiation performance of the DRA. In this way, the antenna retains the high radiation efficiency with its simple excitation. The proposed antenna uses a simple and agile-switching mechanism to provide three switchable polarizations to the DRA including: a y-axis polarization (STATE 1), a +45° polarization (STATE 2), and a -45° polarization (STATE 3) across a wide effective bandwidth (overlapped bands of three states) of 15.0%. The radiation efficiencies maintain 65%-79% in each state throughout the effective operating band. Finally, the experimental results agree well with the theoretical analyses.

Research Area(s)

  • Dielectric resonator antenna (DRA), p-i-n diode, polarization reconfiguration, polarizer