1.06 FoM and Compact Wireless Power Transfer System Using Rectangular Defected Ground Structure Resonators

This letter proposes a wireless power transfer (WPT) system using coplanar waveguide fed rectangular defected ground structure (DGS) resonators. One of the advantages of rectangular DGS resonator is that it has higher quality (Q-) and coupling (K-) factor compared to the H-shape or semi-H-shape DGS...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2017-11, Vol.27 (11), p.1025-1027
Main Authors: Tahar, F., Saad, R., Barakat, A., Pokharel, R. K.
Format: Article
Language:English
Subjects:
Equivalent circuits
Figure of merit (FoM)
Inductance
Q-factor
rectangular defected ground structure (DGS)
Resonators
Wireless power transfer
wireless power transfer (WPT)
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Summary:This letter proposes a wireless power transfer (WPT) system using coplanar waveguide fed rectangular defected ground structure (DGS) resonators. One of the advantages of rectangular DGS resonator is that it has higher quality (Q-) and coupling (K-) factor compared to the H-shape or semi-H-shape DGS resonators. When two DGS resonators are coupled back-to-back, it transforms to a bandpass filter with tight coupling, resulting in the transfer of power wirelessly. The fabricated WPT system of size 35.8~\text {mm} \times 20 mm achieves, for the first time, a figure of merit of more than one at a WPT distance from 40 to 44 mm.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2017.2750032