Design approach for dual element hybrid MIMO antenna arrangement for wideband applications

• Published in: International journal of RF and microwave computer-aided engineering Vol. 29; no. 1; pp. e21486 - n/a
• Main Authors: Kumari, Tripta, Das, Gourab, Sharma, Anand, Gangwar, Ravi Kumar
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 01.01.2019
• Subjects: Antennas; Bandwidths; Broadband; Dielectrics; diversity performance; Frequencies; Ground plane; Magnetic dipoles; MIMO antenna; Radiators; Radio antennas; Resonators; ring DRA; wideband
• ISSN: 1096-4290; 1099-047X
• DOI: 10.1002/mmce.21486

This communication explains the designing of two‐port based hybrid radiator for multiple‐input‐multiple‐output (MIMO) applications. Hybrid radiator includes U‐shaped printed line and ring dielectric resonator antenna (ri‐DRA). Wideband characteristics have been achieved by exciting both the U‐shaped printed line along with ri‐DRA. The U‐shaped metallic line acts as a magnetic dipole and helps to excite fundamental hybrid mode (HE11δ) in the ri‐DRA. Dual L‐shaped and a rectangular defect have been created in ground plane for achieving wideband isolation over the working frequency band. Optimized Scattering parameters and far‐field results are verified by fabricating and testing of antenna prototype. Experimental outcomes confirm that the proposed MIMO antenna gives wider impedance bandwidth (80%), improved port isolation (better than 18 dB), stable gain (~ 4 dB), and radiation pattern. Various MIMO performance factors are analyzed and instituted in the tolerable boundaries.