Design and Simulation of a Flexible UWB MIMO Antenna for mm‐Wave IoT Applications: Performance and SAR Evaluation

Advanced Theory and Simulations, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Abstract This study introduces a compact quad‐element Multiple‐Input Multiple‐Output (MIMO) all‐textile antenna designed for Ultra‐Wideband (UWB) Internet of Things (IoT) applications. The employs felt as the substrate and conductive fabric radiating element, optimizing it wearable devices. Its pentagon‐shaped radiator with L‐shaped slots, partial rectangular ground, circular parasitic patch ensures UWB response. orthogonal arrangement elements enhances MIMO performance, while slotted structure vertical interconnects provides high isolation (>20 dB) unified ground plane. Simulations demonstrate an operational bandwidth 21–50 GHz 81.69% impedance (–10 dB return loss), peak gain 8.92 dBi at 27.5 GHz, radiation efficiency exceeding 89%. Specific Absorption Rate (SAR) values 29, 38, 44 are within safe limits (0.315, 0.248, 0.446 W/kg −1 , respectively). Additionally, diversity metrics such Envelope Correlation Coefficient (ECC < 0.003) Diversity Gain (DG ≈ 10) indicate excellent performance. flexible, high‐speed, reliable is promising solution future IoT systems, meeting requirements communication operation outstanding characteristics.

Язык: Английский

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A new approach to circularly polarized dipole array antenna with polarization conversion technique

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Май 6, 2025

Язык: Английский

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A novel radiation protection method for miniaturized MIMO mobile terminal antenna design based on metamaterials

PLoS ONE, Год журнала: 2025, Номер 20(5), С. e0323299 - e0323299

Опубликована: Май 7, 2025

In this article, we propose an innovative approach to reduce radiation dose absorption inside human head tissues by shrinking the multiple-input multiple-output (MIMO) terminal geometric area. Initially, employ COMSOL software design a MIMO mobile antenna that meets 2G, 3G, 4G, and 5G communication requirements. Through adding decoupling unit, its area reduces from 58 × 120 mm² 44 80 mm², simulations measurements indicate miniaturized exhibits good performance. Subsequently, construct model based on standard anatomical features, including scalp, skull, cerebrum, cerebellum, brainstem. A comparative analysis of specific rate (SAR) across various cranial tissues, conducted before after antenna’s miniaturization, reveals significant reductions: maximum decreases 85.51% in 85.62% 89.02% 93.04% 88.02% These findings suggest decrease risk electromagnetic exposure subjects miniaturization. The miniaturization could effectively mitigate thereby presenting novel strategy for protection.

Язык: Английский

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Enhanced Antipodal Vivaldi Antenna with SSRR Metamaterial for Improved 5G Performance in the 38 GHz Band

Results in Engineering, Год журнала: 2024, Номер unknown, С. 103133 - 103133

Опубликована: Окт. 1, 2024

Язык: Английский

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Development of Semi-Circular Corner Cut MIMO Antenna for 5G- Advanced and 6G Automotive Wireless Applications

Results in Engineering, Год журнала: 2024, Номер 25, С. 103805 - 103805

Опубликована: Дек. 21, 2024

Язык: Английский

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