Wireless Power Transfer to Intra-Abdominal Implants Using an Around-the-Body Loop Antenna
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Details
| 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 | |
| Publication status | Published - 24 Oct 2019 |
| Publication type | A4 Article in a conference publication |
| 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 → … |
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