Wearable Directional Button Antenna for On-Body Wireless Power Transfer-Reference-Cited by-同舟云学术

Wearable Directional Button Antenna for On-Body Wireless Power Transfer

Published:2023-04-07 Issue:8 Volume:12 Page:1758
ISSN:2079-9292
Container-title:Electronics
language:en
Short-container-title:Electronics

Author:

Xu Yuanzheng¹,Mu Lei²,Xu Yinfang²,Mahmoud Abdelhady³^ORCID,Wang Yiying¹,Ramahi Omar M.⁴^ORCID

Affiliation:

1. Guangxi Key Lab of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, China

2. National Key Laboratory of Science and Technology on Test Physics and Numerical Mathematics, Beijing 100076, China

3. Department of Electrical Engineering, Benha University, Benha 13512, Egypt

4. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada

Abstract

For the future application of wireless power transfer on the human body, a wearable directional button antenna, composed of 2×3 artificial magnetic conductor (AMC) cells, is proposed, where the kinetic energy antenna is put on the elbow, which then charges the receiving communication antenna on the upper arm. The radiator of the button antenna is a monopole antenna, which is top-loaded by two cylindrical substrates with different radii to achieve a low profile, and it is fed by the microstrip line made by textiles, including 100% cotton substrate and conductive textile. The AMC cells are put close to the feeding microstrip line in order to realize directional radiation to the other side. Meanwhile, a real human arm model of a Chinese women is built to accurately analyze the corresponding wave propagations. Consequently, two identical antenna prototypes are fabricated, and the corresponding measurements are implemented, where an on-arm approximate measurement method for the radiation pattern is proposed. The measurements agree well with the simulations. Additionally, the influence of the communication antenna on the kinetic energy antenna and the interactions between the antenna and the arm are analyzed. Finally, the transmission efficiency and the SAR values are investigated.

Funder

Innovation Project of Guangxi Graduate Education of Guangxi Educational Committee

National Natural Science Foundation of China

Guangxi Key Laboratory of Automatic Detecting Technology and Instruments of Guangxi Science and Technology Committee

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering

Link

https://www.mdpi.com/2079-9292/12/8/1758/pdf

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