Abstract
In this article, a compact super-wideband flexible textile antenna is proposed. It operates over an extremely broad frequency range from 3.16 to 50 GHz. The proposed design is characterized by its simple geometry, consisting of an offset rectangular patch, which is incorporated with three slots to enhance its performance, while a circular parasitic patch is positioned on the opposite side of the substrate. The proposed antenna prototype is fabricated on a footprint of 30 mm × 25 mm × 1 mm, which measures an electrical dimension of 0.31λ0 × 0.26λ0 × 0.012λ0 at 3.16 GHz. As per measurements, a wide bandwidth of 15.82:1 from 3.16 to 50 GHz is achieved with a peak gain of 7.70 dBi at 23.05 GHz. Furthermore, the ADS software is employed to create and analyze the equivalent circuit model of the designed antenna whose simulation studies are executed using CST software. The suggested antenna's overall performance is described by investigating the effects of structural bending and also proximity to the human body. Moreover, it provides acceptable values of specific absorption rate, ensuring lower absorption, which are under the safety standard limits for RF exposure. The measured results correlate with simulated results. Owing to its simple topology, compact size, super-wideband behavior, and high gain, endorse its suitability for low-power requirement applications in the real world.
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Data availability
All the data generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Code availability (software application or custom code)
Implemented through Computer Simulation Tool (CST) software.
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Acknowledgements
We want to thank the Moroccan Ministry of Higher Education, Scientific Research and Innovation, and the OCP Foundation, which funded this work through the APRD research program.
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Moroccan Ministry of Higher Education, Scientific Research and Innovation; OCP Foundation.
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All authors contributed to the study, conception, design, and simulation. Data collection, analysis, and simulation were initially carried out by SD, AE, SD. Antenna prototype Fabrication and Measurements are performed by BTPM and SD. Additional input to analysis and simulation was given by BTPM, MM, OC, MM. All authors contributed to complete the writing and presentation of the whole manuscript.
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Douhi, S., Eddiai, A., Das, S. et al. Design of a compact super wideband all-textile antenna for radio frequency energy harvesting and wearable devices. Opt Quant Electron 55, 1189 (2023). https://doi.org/10.1007/s11082-023-05498-x
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DOI: https://doi.org/10.1007/s11082-023-05498-x