Coupling-based turns distribution for planar spiral coil antennas in near field magnetic induction links
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 strong...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit UTM Press
2015
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/58180/1/SharulKamal2015_CouplingBasedTurnsDistributionForPlanarSpiralCoil.pdf http://eprints.utm.my/id/eprint/58180/ http://dx.doi.org/10.11113/jt.v77.6282 |
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| Institution: | Universiti Teknologi Malaysia |
| Language: | English |
| Summary: | 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. |
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