| Authors | ,Mousa Abdollahvand,Sima Sobhi-Givi,Saptarshi Ghosh |
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| Journal | Scientific Reports |
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| Page number | 24538-24550 |
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| Serial number | 15 |
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| Volume number | 1 |
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| IF | 4.259 |
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| Paper Type | Full Paper |
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| Published At | 2025 |
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| Journal Type | Electronic |
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| Journal Country | Iran, Islamic Republic Of |
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| Journal Index | ISI،JCR،Scopus |
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| Keywords | in, body antenna, band Notch antenna, UWB monopole antenna, frequency bandwidth |
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Abstract
This study introduces a compact ultra-wideband (UWB) monopole antenna featuring adjustable multi-band rejection capabilities while considering the influence of a human body model on stop bands to optimize bandwidth performance. By incorporating two L-shaped slots into the ground plane, the antenna achieves an extensive bandwidth of up to 140% (3–17 GHz). The adjustable triple-band rejection at 4.3 GHz, 5.6 GHz, and 6.5 GHz is realized through the integration of two PIN diodes within a modified W-shaped slit, two Γ-shaped slits with PIN diodes on the radiating patch, and a T-shaped stub on the ground plane. With its compact dimensions (18 mm × 12 mm × 0.8 mm), the antenna provides broad impedance bandwidth, cost-efficient fabrication, suitability for in-body microwave applications, and omnidirectional radiation characteristics in the H-plane. The prototype’s performance is evaluated based on VSWR and radiation pattern analysis, demonstrating that the proposed adjustable antenna is well-suited for various UWB applications.
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