Efficiency Analysis for Inductive Power Transfer Using Segmented Parallel Line Feeder

Parallel line feeder (PLF) consisting of a two-wire transmission operating in the MHz band has been proposed as wide-coverage short-distance wireless charging. In band, PLF several meters suffers from standing wave effect, resulting fluctuation power transfer efficiency accordingly to receiver's position. This paper studies modified version system, where is divided into individually compensated segments mitigate effect. Modelling lossy line, this theoretically shows that if segments' lengths are properly determined, it able improve and stabilize for all positions. Experimental results at 27.12 confirm theoretical analysis show fairly high 70% can be achieved.