DGS enabled compact implantable antenna with minimal SAR for biomedical applications
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Sapna B. Abdulkareem
und
Ramasamy Kuppusamy
Abstract
In this article, a circular compact implantable microstrip antenna is presented for bio telemetry. The proposed slotted circular patch antenna with a split ring in ground plane is constructed on dual sided Roger 6,010 with superstrate on the radiating patch leading to a volume of 33.35 mm3. The antenna resonates at 2.46 GHz ISM band with |S11| = −31.22 dB and has a gain of −37.9 dBi. According to IEEE and FCC regulations, human safety is ensured by evaluating the radiation absorption rate in the body and is considerably below the SAR threshold of 1.6 W/kg or 2 W/kg for 1 g or 10 g of body tissues. The maximum input power level for SAR limitation is 8.5 mW for 1 g and 11.5 mW for 10 gms of tissues. Homogeneous and heterogeneous body models are used for practical analysis. Antenna performance is analyzed on various body tissues, such as the liver, heart, muscle, and head phantom and validated using pork liver, heart, minced meat and with saline water. A link budget analysis is also performed for transmission coverage of the antenna using HFSS simulation and experimentally validated with LabVIEW and NI-USRP module. The findings indicate that the antenna is appropriate for implantable application for real time environment covering up to 15 m.
Funding source: All India Council for Technical Education
Award Identifier / Grant number: File No.8-122/FDC/ RPS/POLICY-1/2021-2022
Acknowledgments
This work is funded by All India Council for Technical Education, under research promotion scheme. File No. 8-122/FDC/RPS/POLICY-1/2021–2022.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors declare that there are no conflicts of interest related to this article.
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Research funding: All India Council for Technical Education, under research promotion scheme. File No. 8-122/FDC/ RPS/POLICY-1/2021–2022.
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Data availability: Data will be provided on request from the authors.
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