2024-10-22
Compact 8-Port MIMO Antenna for Hot-Spot Applications Based on Embedded Double-Negative Metamaterial Split Ring Resonators
By
Progress In Electromagnetics Research M, Vol. 130, 11-17, 2024
Abstract
This article proposes an 8-port MIMO antenna based on double-negative metamaterial Split Ring Resonators (SRRs) for three-dimensional (3D) non-planar applications, such as hotspots. The antenna features eight radiators arranged orthogonally to each other, placed in two perpendicular planes, operating at 3.5 GHz. Each resonator incorporates six embedded SRRs to enhance the metamaterial behavior, achieving a 40% size reduction compared to a conventional disc monopole at the same frequency. Simulated and measured results demonstrate excellent performance for MIMO applications, with Envelope Correlation Coefficient (ECC) values below 0.001 and Diversity Gain (DG) around 20 dB. The Total Active Reflection Coefficient (TARC) bandwidth is approximately 930 MHz at the -10 dB threshold. The S-parameters indicate excellent electromagnetic isolation between radiators exceeding 20 dB, and a very low cross-polarization level below -30 dB. However, the main limitation of this design is a reduction in gain, an expected result.
Citation
José Alfredo Tirado-Méndez, Arturo Rangel-Merino, and Luis Alberto Vasquez-Toledo, "Compact 8-Port MIMO Antenna for Hot-Spot Applications Based on Embedded Double-Negative Metamaterial Split Ring Resonators," Progress In Electromagnetics Research M, Vol. 130, 11-17, 2024.
doi:10.2528/PIERM24082704
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