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A novel coaxial loop resonator for wireless power transfer
Author(s) -
Dionigi Marco,
Mongiardo Mauro
Publication year - 2012
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20603
Subject(s) - resonator , wireless power transfer , coaxial , capacitance , electrical engineering , microwave , electrical conductor , q factor , coupling (piping) , inductive coupling , helical resonator , coupling coefficient of resonators , magnetic field , coaxial cable , electronic engineering , engineering , acoustics , physics , telecommunications , mechanical engineering , electromagnetic coil , electrode , quantum mechanics , cable gland
We present a novel resonator, based on a coaxial cable structure, suitable for wireless power transfer (WPT) applications. Its advantages are compactness, ease of manufacture, and low cost. WPT resonators generally operate in the HF, LF bands, using magnetic field coupling and a lumped capacitance for achieving the sought resonance. In our structure, the electric field is primarily confined inside the coaxial cable, whereas the magnetic field is generated by the currents flowing on the external conductors. The article describes the resonator structure, illustrates its design procedure, and discusses quality factor contributions. A few resonators with Q higher than 900, operating around 30 MHz, have been built, simulated, and measured confirming the validity of the proposed approach. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE , 2012.