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Coupling-based turns distribution for planar spiral coil antennas in near field magnetic induction links

Eteng, Akaa Agbaeze and Abdul Rahim, Sharul Kamal and Chee, Yen Leow and Beng, Wah Chew (2015) Coupling-based turns distribution for planar spiral coil antennas in near field magnetic induction links. Jurnal Teknologi, 77 (10). pp. 49-54. ISSN 0127-9696

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Official URL: http://dx.doi.org/10.11113/jt.v77.6282

Abstract

This paper describes a numerical study of a coupling-based turn-distribution approach to achieving good transmission performance in near field magnetic inductive links using low Q-factor coil antennas. Coil antenna turns are distributed to match an upper reference coupling level, leading to a stronger axial H-field, with a low margin of Q-factor increment from a baseline minimum. Numerical results demonstrate improved transmission efficiency performance relative to a minimal Q-factor coil antenna when the modified antenna is employed in a symmetric bi-directional inductive link. This approach to increasing transmission efficiency indicates prospects for extending the utility of low Q-factor HF-RFID interrogator antennas to include wireless power delivery applications.

Item Type:Article
Uncontrolled Keywords:coil antenna, coupling, H-field, HF-RFID, magnetic induction, Q-factor
Subjects:A General Works
ID Code:58180
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:06 Sep 2017 15:09

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