Miniaturized SRRs-loaded loop structure for enhanced wireless power transmission

Author

Liang-Yu Ou Yang ; Jinn-Kai Huang ; Shih-Yuan Chen

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

619

Lastpage

620

Abstract

A miniaturized design of metamaterial-inspired split-ring-resonators- (SRRs-) loaded loop structure is proposed for enhanced wireless power transmission (WPT) applications. The magneto-inductive coupling between transmitting and receiving loops is enhanced by respectively embedding a pair of SRRs inside the loops. The sizes of both the loop and SRRs are reduced by capacitive loading. The fabricated 13.56-MHz prototype design is very compact and measures only 49 mm × 49 mm. Though small in size, the impedance matching is also achieved by the capacitive loading. The proposed structure exhibits a satisfactory level of power transmission efficiency (PTE) of about 58%, comparable to the 64.2% PTE obtained in [1] with diameter of 80 mm.

Keywords

inductive power transmission; metamaterials; radiofrequency power transmission; resonators; PTE; WPT; capacitive loading; enhanced wireless power transmission; frequency 13.56 MHz; impedance matching; magneto-inductive coupling; metamaterial-inspired split-ring-resonators; miniaturized SRRs-loaded loop structure; power transmission efficiency; receiving loops; size 80 mm; transmitting loops; Capacitors; Couplings; Magnetic flux; Power transmission; Prototypes; Resonant frequency; Wireless communication; magneto-inductive coupling; metamaterials; wireless power transmission;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026803

Filename

7026803