Title :
The effects of magneto-static resonances in metamaterials on the quality factor of coils in near field applications
Author :
Chabalko, Matthew J. ; Ricketts, David S.
Author_Institution :
ECE Dept., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
In this work we examine the effects of near field metamaterials (NF-MM) on the quality factor (Q) of an excitation (i.e. source) coil. We show that when the permeability becomes negative, magneto-static resonances (MR) occur that are coupled strongly to the excitation coil and increase the loss in the coil. Our simulation and experimental results show that Q can be degraded by a factor of 4 or more due to the MR induced loss in an excitation coil.
Keywords :
Q-factor; coils; electromagnetic metamaterials; permeability; MR induced loss; NF-MM; coils; excitation coil; magneto-static resonances; near field applications; near field metamaterials; permeability; quality factor; Coils; Couplings; Magnetic resonance; Metamaterials; Permeability; Q-factor;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904545
