Efficiency Analysis of Magnetic Resonance Wireless Power Transfer With Intermediate Resonant Coil JinWook Kim ; Hyeon-Chang Son ; Kwan-Ho Kim ; Young-Jin Park Abstract Publication: IEEE Antennas and Wireless Propagation Letters Pub Date: 2011 DOI: 10.1109/LAWP.2011.2150192 Bibcode: 2011IAWPL..10..389J