A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

Jingchen Wang; Mark Paul Leach; Eng Gee Lim; Zhao Wang; Zhenzhen Jiang; Rui Pei; Yi Huang

doi:10.1109/ACCESS.2019.2918640

A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

Jingchen Wang
, Mark Paul Leach
, Eng Gee Lim^*
, Zhao Wang
, Zhenzhen Jiang
, Rui Pei
, Yi Huang

^*Corresponding author for this work

University of Liverpool

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

A conventional printed spiral coil (PSC) has a self-resonant frequency and its equivalent circuit is a parallel inductor-capacitor (LC) circuit. It is desirable to use PSCs in wireless power transfer (WPT) applications; however, these are most commonly constituted by a series-primary and series- or parallel-secondary circuit. This paper proposes a printed conformal split-ring loop with the characteristic of a series LC circuit at its resonance frequency. Regarding the loop as a self-resonator, a magnetic-resonance coupled (MRC) WPT system with series-primary and secondary operating at 433 MHz in the industrial scientific and medical (ISM) band is presented. The maximum measured power transfer efficiency is 87.9% at a transfer distance of 22 mm, the best-reported result for such a configuration.

Original language	English
Article number	8721462
Pages (from-to)	911-919
Number of pages	9
Journal	IEEE Access
Volume	8
DOIs	https://doi.org/10.1109/ACCESS.2019.2918640
Publication status	Published - 2020

Keywords

Wireless power transfer
magnetic resonance coupling
near fields
printed spiral coils
split-ring resonators

Access to Document

10.1109/ACCESS.2019.2918640

Cite this

@article{2674200fc09f41f282cc8a02f4f3bb71,

title = "A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer",

abstract = "A conventional printed spiral coil (PSC) has a self-resonant frequency and its equivalent circuit is a parallel inductor-capacitor (LC) circuit. It is desirable to use PSCs in wireless power transfer (WPT) applications; however, these are most commonly constituted by a series-primary and series- or parallel-secondary circuit. This paper proposes a printed conformal split-ring loop with the characteristic of a series LC circuit at its resonance frequency. Regarding the loop as a self-resonator, a magnetic-resonance coupled (MRC) WPT system with series-primary and secondary operating at 433 MHz in the industrial scientific and medical (ISM) band is presented. The maximum measured power transfer efficiency is 87.9\% at a transfer distance of 22 mm, the best-reported result for such a configuration.",

keywords = "Wireless power transfer, magnetic resonance coupling, near fields, printed spiral coils, split-ring resonators",

author = "Jingchen Wang and Leach, \{Mark Paul\} and Lim, \{Eng Gee\} and Zhao Wang and Zhenzhen Jiang and Rui Pei and Yi Huang",

note = "Funding Information: This work was supported in part by the AI University Research Centre (AI-URC) through the XJTLU Key Programme Special Fund under Grant KSF-P-02, and in part by the XJTLU Research Development Fund under Grant PGRS-13-03-06, Grant RDF-14-03-24, and Grant RDF-14-02-48. Publisher Copyright: {\textcopyright} 2019 IEEE.",

year = "2020",

doi = "10.1109/ACCESS.2019.2918640",

language = "English",

volume = "8",

pages = "911--919",

journal = "IEEE Access",

issn = "2169-3536",

}

TY - JOUR

T1 - A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

AU - Wang, Jingchen

AU - Leach, Mark Paul

AU - Lim, Eng Gee

AU - Wang, Zhao

AU - Jiang, Zhenzhen

AU - Pei, Rui

AU - Huang, Yi

N1 - Funding Information: This work was supported in part by the AI University Research Centre (AI-URC) through the XJTLU Key Programme Special Fund under Grant KSF-P-02, and in part by the XJTLU Research Development Fund under Grant PGRS-13-03-06, Grant RDF-14-03-24, and Grant RDF-14-02-48. Publisher Copyright: © 2019 IEEE.

PY - 2020

Y1 - 2020

N2 - A conventional printed spiral coil (PSC) has a self-resonant frequency and its equivalent circuit is a parallel inductor-capacitor (LC) circuit. It is desirable to use PSCs in wireless power transfer (WPT) applications; however, these are most commonly constituted by a series-primary and series- or parallel-secondary circuit. This paper proposes a printed conformal split-ring loop with the characteristic of a series LC circuit at its resonance frequency. Regarding the loop as a self-resonator, a magnetic-resonance coupled (MRC) WPT system with series-primary and secondary operating at 433 MHz in the industrial scientific and medical (ISM) band is presented. The maximum measured power transfer efficiency is 87.9% at a transfer distance of 22 mm, the best-reported result for such a configuration.

AB - A conventional printed spiral coil (PSC) has a self-resonant frequency and its equivalent circuit is a parallel inductor-capacitor (LC) circuit. It is desirable to use PSCs in wireless power transfer (WPT) applications; however, these are most commonly constituted by a series-primary and series- or parallel-secondary circuit. This paper proposes a printed conformal split-ring loop with the characteristic of a series LC circuit at its resonance frequency. Regarding the loop as a self-resonator, a magnetic-resonance coupled (MRC) WPT system with series-primary and secondary operating at 433 MHz in the industrial scientific and medical (ISM) band is presented. The maximum measured power transfer efficiency is 87.9% at a transfer distance of 22 mm, the best-reported result for such a configuration.

KW - Wireless power transfer

KW - magnetic resonance coupling

KW - near fields

KW - printed spiral coils

KW - split-ring resonators

UR - https://www.scopus.com/pages/publications/85077745772

U2 - 10.1109/ACCESS.2019.2918640

DO - 10.1109/ACCESS.2019.2918640

M3 - Article

AN - SCOPUS:85077745772

SN - 2169-3536

VL - 8

SP - 911

EP - 919

JO - IEEE Access

JF - IEEE Access

M1 - 8721462

ER -

A Conformal Split-Ring Loop as a Self-Resonator for Wireless Power Transfer

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this