Printed Split-Ring Loops with High Q-Factor for Wireless Power Transmission

Wang, Jingchen, Leach, Mark Paul, Lim, Eng Gee, Wang, Zhao, Pei, Rui, Jiang, Zhenzhen and Huang, Yi ORCID: 0000-0001-7774-1024 (2021) Printed Split-Ring Loops with High Q-Factor for Wireless Power Transmission. ELECTRONICS, 10 (22). p. 2884.

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Official URL: http://dx.doi.org/10.3390/electronics10222884

Abstract

<jats:p>The use of printed spiral coils (PSCs) as inductors in the construction of Wireless Power Transmission (WPT) circuits can save space and be integrated with other circuit boards. The challenges and issues of PSCs present for WPT mainly relate to maintaining an inductive characteristic at frequencies in Ultra High Frequency (UHF) band and to maximising the power transfer efficiency (PTE) between primary and secondary circuits. A new technique is proposed to increase the Q-factor relative to that offered by the PSC, which is shown to enhance WPT performance. This paper provides four-turn planar split-ring loops with high Q-factor for wireless power transmission at UHF bands. This design enhances the power transfer efficiency more than 12 times and allows for a greater transfer distance from 5 mm to 20 mm, compared with a conventional planar rectangular spiral coil.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	wireless power transmission, magnetic resonance coupling, planar spiral coil, split-ring loops
Divisions:	Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	03 Feb 2022 13:37
Last Modified:	15 Mar 2024 13:38
DOI:	10.3390/electronics10222884
Open Access URL:	https://www.mdpi.com/2079-9292/10/22/2884
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3148120