An 868 MHz Bandage Type Antenna using Aluminum conductor and PDMS substrate

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Kumar, Sanjeev
Simorangkir, Roy B. V. B.
Gawade, Dinesh R.
Quinn, Aidan J.
O'Flynn, Brendan
Buckley, John L.
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This paper presents an 868 MHz ultra-high frequency (UHF) bandage-type antenna for wireless body sensor network applications. The proposed antenna has a modified planar rectangular patch antenna topology and is realized using aluminum metalization and a flexible polydimethylsiloxane (PDMS) substrate. The performance characteristics of the antenna have been investigated through electromagnetic simulations and measurements on a human body phantom arm. The proposed antenna achieves a bandwidth of 11 MHz which is 57 % wider than the required bandwidth for the European LoRaWAN 868 MHz band operation. When compared to bandage-type Sub-GHz antennas reported in the literature, the proposed antenna exhibits desired gain and efficiency performance. Furthermore, the developed antenna demonstrates a low 10-g averaged SAR figure of 0.82 W/kg when 25 mW input power is supplied. The achieved impedance and radiation characteristics make the proposed antenna suitable for a wide range of body-worn wireless health monitoring applications.
Aluminum antenna , Band-aid , Bandage-type antenna , PDMS , Sub-GHz , UHF , Wearable antenna
Kumar, S., Simorangkir, R. B. V. B., Gawade, D. R., Quinn, A. J., O'Flynn, B. and Buckley, J. L. (2022) 'An 868 MHz Bandage Type Antenna using Aluminum conductor and PDMS substrate', iWAT2022: 17th International Workshop on Antenna Technology, Dublin, Ireland, 16 -18 May.