Compact Dual-Port MIMO Microstrip Patch Antenna for Terahertz Applications in 6G Communications
Nirzar Baruaa b c, Akib Jayed Islamd e, Arafat Uddinf, Sultanus Salehing h, Tanvir A. Paveli j, Kaniz Fatema Anannak
- aChittagong Uni. of Engineering &
- bTechnology,Electronics &
- cTelecommunication Engineering,Chittagong,Bangladesh
- dNorwegian University of Science and Technology,Computational Colour &
- eSpectral Imaging,Gjøvik,Norway
- fPCIU,Department of EEE,Chattogram,Bangladesh
- gThe University of Alabama,Electrical &
- hComputer Engineering,Tuscaloosa,USA
- iPort City International University (PCIU),Electrical &
- jElectronic Engineering (EEE),Chattogram,Bangladesh
- kNational Institute of Technology,Mechanical Engineering,Warangal,Telangana,India
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Abstract
This study introduces a dual-port MIMO antenna featuring a two-element microstrip patch array, specifically designed for THz applications with an emphasis on 6G communication systems. Developed on an FR-4 substrate with copper elements, the antenna achieves notable miniaturization, with dimensions of 52 × 48.5 µm2and a thickness of 1.6 µm. By incorporating an H-shaped slot and strategic notches, the patch size is reduced by 51%. The proposed design exhibits a primary resonant frequency at 2.71 THz, with secondary resonances at 4.3 THz and 5.7 THz, achieving return loss values of 40.40 dB and approximately -30 dB, respectively. The antenna demonstrates a gain of 3.15 dBi, linear polarization, and high directivity. Simulations conducted in CST Microwave Studio validate the antenna’s high performance, including a broad operational bandwidth of 4.69 THz covering the range from 2.22 THz to 6.91 THz, excellent impedance matching with a VSWR of 1.01, and an efficiency of 61%. The dual port MIMO configuration ensures minimal mutual coupling, evidenced by a low ECC of 3.26 × 10−5and a reduced CCL including the isolation of 25 dB. These results confirm the antenna’s suitability for advanced applications such as terahertz communications, high-speed data transfer, and sensing systems, offering an optimal combination of compactness, efficiency, and reliability.