Mitigation of antenna displacement with array antenna for data transmission in wireless power transfer system

Motoki Iida, Yukitoshi Sanada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Magnetic resonance wireless power transfer is expected to be one of the prevalent schemes because of its high efficiency and long transmission range. However, in this scheme, there is a problem that the characteristics of a transmission channel changes in according with the distance between coil antennas. This paper investigates the performance of data transmission with an array antenna in a wireless power transfer system. In the assumed system, the same antennas for wireless power transfer are used for data transmission. The frequency response of the channel for data transmission changes in according with the distance between the antennas. The assumed system uses multiple transmit antennas and beamforming is realized with ideal phase shifts to transmit symbols in the transmitter. Numerical results obtained through computer simulation show that the proposed scheme can mitigate the dependency of the bit error rate (BER) to the distance between the antennas. It is within 1-3 dB at the BER of 10-5 with two transmit antennas. In addition, the system with two transmit antennas achieves 2 dB or more improvement in term of the BER than with a single antenna for specific antenna distances.

Original languageEnglish
Title of host publicationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2155-2159
Number of pages5
Volume2015-December
ISBN (Print)9781467367820
DOIs
Publication statusPublished - 2015 Dec 1
Event26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015 - Hong Kong, China
Duration: 2015 Aug 302015 Sep 2

Other

Other26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015
CountryChina
CityHong Kong
Period15/8/3015/9/2

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Iida, M., & Sanada, Y. (2015). Mitigation of antenna displacement with array antenna for data transmission in wireless power transfer system. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC (Vol. 2015-December, pp. 2155-2159). [7343654] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRC.2015.7343654