Shahid Muhammad Ali
Design and Evaluation of a Button Sensor Antenna for On-Body Monitoring Activity in Healthcare Applications
Ali, Shahid Muhammad; Sovuthy, Cheab; Noghanian, Sima; Saeidi, Tale; Majeed, Muhammad Faran; Hussain, Amir; Masood, Faisal; Khan, Shariq Mahmood; Shah, Syed Aziz; Abbasi, Qammer H.
Authors
Cheab Sovuthy
Sima Noghanian
Tale Saeidi
Muhammad Faran Majeed
Prof Amir Hussain A.Hussain@napier.ac.uk
Professor
Faisal Masood
Shariq Mahmood Khan
Syed Aziz Shah
Qammer H. Abbasi
Abstract
A button sensor antenna for on-body monitoring in wireless body area network (WBAN) systems is presented. Due to the close coupling between the sensor antenna and the human body, it is highly challenging to design sensor antenna devices. In this paper, a mechanically robust system is proposed that integrates a dual-band button antenna with a wireless sensor module designed on a printed circuit board (PCB). The system features a small footprint and has good radiation characteristics and efficiency. This was fabricated, and the measured and simulated results are in good agreement. The design offers a wide range of omnidirectional radiation patterns in free space, with a reflection coefficient (S11) of −29.30 (−30.97) dB, a maximum gain of 1.75 (5.65) dBi, and radiation efficiency of 71.91 (92.51)% in the lower and upper bands, respectively. S11 reaches −23.07 (−27.07) dB and −30.76 (−31.12) dB, respectively, with a gain of 2.09 (6.70) dBi and 2.16 (5.67) dBi, and radiation efficiency of 65.12 (81.63)% and 75.00 (85.00)%, when located on the body for the lower and upper bands, respectively. The performance is minimally affected by bending, movement, and fabrication tolerances. The specific absorption rate (SAR) values are below the regulatory limitations for the spatial average over 1 g (1.6 W/Kg) and 10 g of tissues (2.0 W/Kg). For both indoor and outdoor conditions, experimental results of the range tests confirm the coverage of up to 40 m.
Citation
Ali, S. M., Sovuthy, C., Noghanian, S., Saeidi, T., Majeed, M. F., Hussain, A., Masood, F., Khan, S. M., Shah, S. A., & Abbasi, Q. H. (2022). Design and Evaluation of a Button Sensor Antenna for On-Body Monitoring Activity in Healthcare Applications. Micromachines, 13(3), Article 475. https://doi.org/10.3390/mi13030475
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 15, 2022 |
Online Publication Date | Mar 20, 2022 |
Publication Date | 2022 |
Deposit Date | Mar 28, 2022 |
Publicly Available Date | Mar 28, 2022 |
Journal | Micromachines |
Publisher | MDPI |
Peer Reviewed | Peer Reviewed |
Volume | 13 |
Issue | 3 |
Article Number | 475 |
DOI | https://doi.org/10.3390/mi13030475 |
Keywords | button sensor antenna; body centric communication; specific absorption rate (SAR) |
Public URL | http://researchrepository.napier.ac.uk/Output/2858444 |
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Design And Evaluation Of A Button Sensor Antenna For On-Body Monitoring Activity In Healthcare Applications
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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