Analysis of Received Power in RF Wireless Power Transfer System With Array Antennas

Chan Mi Song; Son Trinh-Van; Sang-Hwa Yi; Jongseok Bae; Youngoo Yang; Kang-Yoon Lee; Keum Cheol Hwang

doi:10.1109/ACCESS.2021.3083270

IEEE Access (Jan 2021)

Analysis of Received Power in RF Wireless Power Transfer System With Array Antennas

Chan Mi Song,
Son Trinh-Van,
Sang-Hwa Yi,
Jongseok Bae,
Youngoo Yang,
Kang-Yoon Lee,
Keum Cheol Hwang

Affiliations

Chan Mi Song: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Son Trinh-Van: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Sang-Hwa Yi: ORCiD; Electrical Environment Research Center, Korea Electrotechnology Research Institute, Changwon, South Korea
Jongseok Bae: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Youngoo Yang: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Kang-Yoon Lee: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
Keum Cheol Hwang: ORCiD; Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea

DOI: https://doi.org/10.1109/ACCESS.2021.3083270
Journal volume & issue: Vol. 9
pp. 76315 – 76324

Abstract

Read online

In this paper, a method for calculating the received power in a radio-frequency wireless power transfer system with array antennas is proposed. The received power is derived based on the superposition of the electric fields that radiate from individual transmitter (Tx) elements and are captured by each receiver (Rx) element. That is expressed in a finite series form with the radiation patterns of an element considering mutual coupling in the array and corresponding distances between the elements of Tx and Rx. Unlike conventional methods (such as the Friis and Goubau formulas), this approach is able to calculate the received power precisely in both Fresnel and far-field regions. It is also efficiently applicable to various cases, such as those involving beamforming and with varying positions of Rx. The calculated results using this method are applied to a 5.2 GHz WPT system with array antennas and verified through comparisons with both simulation and experimental results.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords