Wireless power transmission technologies

The article consists of three parts. analysis existing technologies wireless power transfer (WPT) is carried out in the first part. It noted that one factors determines choice or another WPT technology distance over which transmitted and type electromagnetic (EM) energy used. essence near zone, Fresnel zone Fraunhofer explained. A generalized block diagram system presented. Areas application trends further development short distances using induction resonance methods, long distances, EM harvesting from surrounding space its conversion into direct current for powering low-power devices are considered.
 achievements team antenna laboratory Kharkiv National University Radio Electronics (KhNURE) area presented second part article. Namely, electrodynamics’ approach considered based on a single idea about functioning systems include antennas their circuits ways excitation with nonlinear elements. stages building mathematical model (MM) level presented, according to entire system, generally includes transmitting subsystem receiving subsystem, as multi-input characteristics. proposed MM provides complete representation operation wide class purpose, fundamentally different used.
 third presents new results related continued research. adequacy developed out. simulation method (near zone) comparison theoretical experimental data other authors showed reliability universality basis.