Graded refractive index metamaterial for enhanced far-field wireless power transfer efficiency in S-band

A graded refractive index metamaterial (MM) exhibits a magnetic dipole designed and demonstrated experimentally for 2.45 GHz operating frequency. The system efficiency of the far-field wireless power transfer technique increased to 32.6% with MM. With 16° reduction in half power beamwidths, 9.78 dBm...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:International journal of electronics and communications Jg. 138; S. 153859
Hauptverfasser: Kulkarni, Shashank S., Baghel, Amit Kumar, Nayak, Sisir Kumar
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier GmbH 01.08.2021
Schlagworte:
Electromagnetics
Far-field wireless power transfer
Graded refractive index
Metamaterial
Graded refractive index
Far-field wireless power transfer
Electromagnetics
Metamaterial
ISSN:1434-8411, 1618-0399
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A graded refractive index metamaterial (MM) exhibits a magnetic dipole designed and demonstrated experimentally for 2.45 GHz operating frequency. The system efficiency of the far-field wireless power transfer technique increased to 32.6% with MM. With 16° reduction in half power beamwidths, 9.78 dBm is received at 1 m with 30 dBm input when MM is placed at an optimum distance of 2.5λ0 from transmitting antenna aperture. The method is studied experimentally, and results are compared with the Friis transmission equation, thus validating experimental and theoretical analysis. The system efficiency is always higher than the system with no MM, and hence the proposed method is suitable for long-range wireless power transfer applications maximizing the theoretical power received.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2021.153859