NDLI: Increasing the radiation efficiency and resistance of electrically small spherical helical antenna for wireless power transfer

Content Provider	IEEE Xplore Digital Library
Author	Skiljo, M. Blazevic, Z.
Copyright Year	2013
Description	Author affiliation: Fac. of Electr. Eng., Mech. Eng. & Naval Archit., Univ. of Split, Split, Croatia (Skiljo, M.; Blazevic, Z.)
Abstract	The performance of wireless power transfer system depends highly on antenna radiation efficiency, according to the theory. Practical problem of power transfer between electrically small antennas is their impedance match to standard transmission lines. This paper shows how the maximum power transfer efficiency can be reached with new design approach at 10 MHz. Various helical antenna designs are investigated and compared. A combination of two methods is proposed for increasing the radiation efficiency and the input resistance of spherical helical antenna. The results show that it is possible to achieve significantly higher power transfer efficiency at 10 MHz than in the reported literature. The wireless power transfer system consisted of two four-arm spherical helical antennas with $k_{res}a$ = 0.064, can achieve maximum power transfer efficiency of 95 percent at 2 m.
Starting Page	1
Ending Page	5
File Size	462705
Page Count	5
File Format	PDF
ISBN	9789532900408
DOI	10.1109/SoftCOM.2013.6671882
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-18
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	inductive feed multiple-arm folding electrically small spherical helical antenna wireless power transfer
Content Type	Text
Resource Type	Article

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