The transfer distance of maximum power increase 0.1 mm in parity-time symmetry wireless power transfer circuit

Utilizing current controlled voltage source (CCVS), we obtain negative effective resistance, design wireless power transfer circuit of parity-time (PT) symmetry and obtain the conditions of the PT symmetry circuits. According to PT symmetry theory, we obtain PT symmetry broken point (PTSBP). We experimentally investigate wireless power transfer at various frequency including the frequency of PTSBP and magnetic resonance. The experimental results show that the transfer distance of maximum power increase 0.1 mm at the frequency of PTSBP than that at the frequency of magnetic resonance.