Two-dimensional multi-hop wireless power transfer via magnetic resonance is able to transmit electrical energy with high efficiency by selecting intermediate couplers in accordance with the location of a receiver. Therefore estimating receiver's location is required for power transfer using intermediate couplers.
In this paper, we evaluate the location estimation accuracy considering receiver height in two-dimensional multi-hop wireless power transfer. We use a fingerprinting method using reflection coefficient as a feature value for location estimation. As results of electromagnetic simulation, estimation accuracy is degraded when the receiver height is higher than learned point. On the other hand, estimation accuracy maintains high precision when the receiver hight is lower than learned point.