3-D-printed Wideband Circularly Polarized MIMO Dielectric Resonator Antenna

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

7 Scopus Citations
View graph of relations


Original languageEnglish
Pages (from-to)5675-5683
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number7
Online published1 May 2023
Publication statusPublished - Jul 2023


A 3-D-printed wideband circularly polarized (CP) multiple-input–multiple-output (MIMO) antenna is proposed. This antenna consists of two CP dielectric resonator antennas (DRAs) which are covered by a dielectric decoupler. With this decoupler, the center-to-center distance between the two DRAs can be made as small as 0.33λ0 with a high isolation, where λ0 is the operating wavelength in air. To verify the simulation, a prototype operating in X-band was designed, fabricated, and measured. Its measured -10-dB impedance bandwidth is 21.7% (8.88–11.04 GHz), within which the axial-ratio bandwidth and mutual coupling are less than 3 dB and -21.4 dB, respectively. The impedance and AR have a wide overlapping bandwidth of 21.7%. © 2023 IEEE

Research Area(s)

  • 3-D printing, Antennas, Bandwidth, circular polarization (CP), Couplings, dielectric decoupler, dielectric resonator antenna (DRA), Dielectric resonator antennas, Dielectrics, MIMO communication, multi-input-multi-output (MIMO), Mutual coupling, wideband antenna