TY - JOUR
T1 - Space Matching for Highly Efficient Microwave Wireless Power Transmission Systems
T2 - Theory, Prototype, and Experiments
AU - Lu, Ping
AU - Huang, Kama
AU - Yang, Yang
AU - Zhang, Bing
AU - Cheng, Fei
AU - Song, Chaoyun
N1 - Funding Information:
Manuscript received August 19, 2020; revised November 26, 2020 and December 30, 2020; accepted January 6, 2021. Date of publication February 8, 2021; date of current version March 4, 2021. This work was supported in part by the National Natural Science Foundation of China under Grant 51907130 and Grant 61931009; in part by the Postdoctoral Science Foundation of China under Grant 20504153007; in part by the Sichuan Science and Technology Program under Grant 2020YFH0091; in part by the Chengdu Science and Technology Program under Grant 2020-GH02-00036-HZ; and in part by the Fundamental Research Funds for the Central Universities under Grant 20504153015. (Corresponding author: Kama Huang.) Ping Lu, Kama Huang, Yang Yang, Bing Zhang, and Fei Cheng are with the School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China (e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).
Publisher Copyright:
© 1963-2012 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - Microwave wireless power transmission (MWPT) via radio waves has been an important research topic of the WPT systems, where the overall power transfer and conversion efficiency is a key factor to evaluate the system performance. The state-of-the-art work on MWPT has only taken the end-to-end power transfer efficiency in free space or the power conversion efficiency of the receiver (rectenna) into consideration separately when optimizing the power transfer efficiency of the overall system. To comprehensively consider the system-level matching of the entire MWPT system, a novel space matching concept, including aperture field matching, power matching, and impedance matching, is proposed for optimizing the overall power transfer efficiency. By using the space matching method in this work, the optimal designs of the subsystem components such as the transmitting antenna, receiving antenna, and rectifying circuit can be separately obtained to avoid the complex systematic optimization of the large-scale and complicated MWPT system, therefore, significantly improving the overall power transfer efficiency by 19.4% compared with the traditional methods, and reducing the complexity in large-scale system-level design. This work will have valuable implications in the system design of MWPT applications.
AB - Microwave wireless power transmission (MWPT) via radio waves has been an important research topic of the WPT systems, where the overall power transfer and conversion efficiency is a key factor to evaluate the system performance. The state-of-the-art work on MWPT has only taken the end-to-end power transfer efficiency in free space or the power conversion efficiency of the receiver (rectenna) into consideration separately when optimizing the power transfer efficiency of the overall system. To comprehensively consider the system-level matching of the entire MWPT system, a novel space matching concept, including aperture field matching, power matching, and impedance matching, is proposed for optimizing the overall power transfer efficiency. By using the space matching method in this work, the optimal designs of the subsystem components such as the transmitting antenna, receiving antenna, and rectifying circuit can be separately obtained to avoid the complex systematic optimization of the large-scale and complicated MWPT system, therefore, significantly improving the overall power transfer efficiency by 19.4% compared with the traditional methods, and reducing the complexity in large-scale system-level design. This work will have valuable implications in the system design of MWPT applications.
KW - Microwave circuits
KW - Microwave theory and techniques
KW - Microwave wireless power transmission (MWPT)
KW - power transfer and conversion efficiency (PTCE)
KW - Radio frequency
KW - Receiving antennas
KW - rectenna array
KW - Rectennas
KW - Rectifying circuits
KW - separate optimization
KW - space matching concept.
KW - Transmitting antennas
KW - space matching concept
UR - http://www.scopus.com/inward/record.url?scp=85100867459&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2021.3053969
DO - 10.1109/TMTT.2021.3053969
M3 - Article
AN - SCOPUS:85100867459
SN - 0018-9480
VL - 69
SP - 1985
EP - 1998
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 3
ER -