Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna

Shahbaz Ahmed; Lauri Sydänheimo; Leena Ukkonen; Toni Björninen

doi:10.1109/ICEAA.2019.8879253

Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna

Shahbaz Ahmed, Lauri Sydänheimo, Leena Ukkonen, Toni Björninen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

Abstract

We study the wireless powering of intra-abdominal implants using a wearable around-the-body loop antenna. The study includes the wireless link characterization and modelling of the specific absorption rate (SAR) obtained by an anatomical human body model and a simplified homogenous elliptic cylinder model. We also assess the robustness of the system in terms of the power gain uniformity at the cross-sectional plane of the abdominal cavity. Overall, our system achieves the link power efficiency of −6.6 dB at 7.25 MHz to an implant (2.3-by-2.3 cm square loop) at the center of the abdominal cavity. According to SAR analysis, under the 1.6 W/kg limit, we can transmit 530 mW and the maximum power available at the implant is 149 mW with the voltage amplitude of 3.6 V. Moreover, the voltage at the implant remains above 1 V for transmission power levels down to 10% of the maximum.

Original language	English
Title of host publication	2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Publisher	IEEE
Pages	0055-0059
Number of pages	5
ISBN (Electronic)	978-1-7281-0563-5
ISBN (Print)	978-1-7281-0564-2
DOIs	https://doi.org/10.1109/ICEAA.2019.8879253
Publication status	Published - 24 Oct 2019
Publication type	A4 Article in conference proceedings
Event	International Conference on Electromagnetics in Advanced Applications - Duration: 1 Jan 1900 → …

Conference

Conference	International Conference on Electromagnetics in Advanced Applications
Period	1/01/00 → …

Keywords

Implants
Biological system modeling
Wireless communication
Transmitting antennas
Mathematical model
Wireless sensor networks
Wireless power transfer
power transfer efficiency
implant antenna
intra-abdominal implants

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@inproceedings{4e70b1f448be4d1b9f1f817c8b25bf95,

title = "Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna",

abstract = "We study the wireless powering of intra-abdominal implants using a wearable around-the-body loop antenna. The study includes the wireless link characterization and modelling of the specific absorption rate (SAR) obtained by an anatomical human body model and a simplified homogenous elliptic cylinder model. We also assess the robustness of the system in terms of the power gain uniformity at the cross-sectional plane of the abdominal cavity. Overall, our system achieves the link power efficiency of −6.6 dB at 7.25 MHz to an implant (2.3-by-2.3 cm square loop) at the center of the abdominal cavity. According to SAR analysis, under the 1.6 W/kg limit, we can transmit 530 mW and the maximum power available at the implant is 149 mW with the voltage amplitude of 3.6 V. Moreover, the voltage at the implant remains above 1 V for transmission power levels down to 10% of the maximum.",

keywords = "Implants, Biological system modeling, Wireless communication, Transmitting antennas, Mathematical model, Wireless sensor networks, Wireless power transfer, power transfer efficiency, implant antenna, intra-abdominal implants",

author = "Shahbaz Ahmed and Lauri Syd{\"a}nheimo and Leena Ukkonen and Toni Bj{\"o}rninen",

year = "2019",

month = oct,

day = "24",

doi = "10.1109/ICEAA.2019.8879253",

language = "English",

isbn = "978-1-7281-0564-2",

pages = "0055--0059",

booktitle = "2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)",

publisher = "IEEE",

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}

Ahmed, S, Sydänheimo, L, Ukkonen, L & Björninen, T 2019, Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna. in 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, pp. 0055-0059, International Conference on Electromagnetics in Advanced Applications, 1/01/00. https://doi.org/10.1109/ICEAA.2019.8879253

Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna. / Ahmed, Shahbaz; Sydänheimo, Lauri; Ukkonen, Leena et al.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2019. p. 0055-0059.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna

AU - Ahmed, Shahbaz

AU - Sydänheimo, Lauri

AU - Ukkonen, Leena

AU - Björninen, Toni

PY - 2019/10/24

Y1 - 2019/10/24

N2 - We study the wireless powering of intra-abdominal implants using a wearable around-the-body loop antenna. The study includes the wireless link characterization and modelling of the specific absorption rate (SAR) obtained by an anatomical human body model and a simplified homogenous elliptic cylinder model. We also assess the robustness of the system in terms of the power gain uniformity at the cross-sectional plane of the abdominal cavity. Overall, our system achieves the link power efficiency of −6.6 dB at 7.25 MHz to an implant (2.3-by-2.3 cm square loop) at the center of the abdominal cavity. According to SAR analysis, under the 1.6 W/kg limit, we can transmit 530 mW and the maximum power available at the implant is 149 mW with the voltage amplitude of 3.6 V. Moreover, the voltage at the implant remains above 1 V for transmission power levels down to 10% of the maximum.

AB - We study the wireless powering of intra-abdominal implants using a wearable around-the-body loop antenna. The study includes the wireless link characterization and modelling of the specific absorption rate (SAR) obtained by an anatomical human body model and a simplified homogenous elliptic cylinder model. We also assess the robustness of the system in terms of the power gain uniformity at the cross-sectional plane of the abdominal cavity. Overall, our system achieves the link power efficiency of −6.6 dB at 7.25 MHz to an implant (2.3-by-2.3 cm square loop) at the center of the abdominal cavity. According to SAR analysis, under the 1.6 W/kg limit, we can transmit 530 mW and the maximum power available at the implant is 149 mW with the voltage amplitude of 3.6 V. Moreover, the voltage at the implant remains above 1 V for transmission power levels down to 10% of the maximum.

KW - Implants

KW - Biological system modeling

KW - Wireless communication

KW - Transmitting antennas

KW - Mathematical model

KW - Wireless sensor networks

KW - Wireless power transfer

KW - power transfer efficiency

KW - implant antenna

KW - intra-abdominal implants

U2 - 10.1109/ICEAA.2019.8879253

DO - 10.1109/ICEAA.2019.8879253

M3 - Conference contribution

SN - 978-1-7281-0564-2

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BT - 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)

PB - IEEE

T2 - International Conference on Electromagnetics in Advanced Applications

Y2 - 1 January 1900

ER -

Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna

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