Efficient near-field wireless energy transfer using adiabatic system variations

An apparatus comprising:

• first, intermediate, and second resonator structures, wherein a coupling rate between the first resonator structure and the intermediate resonator structure is κ1B and a coupling rate between the intermediate resonator structure and the second resonator structure is κB2;
• and
• means for adjusting at least one of the coupling rates κ1B and κB2 during wireless energy transfers among the resonator structures to cause an energy distribution in the field of the three-resonator system to have substantially no energy in the intermediate resonator structure while wirelessly transferring energy from the first resonator structure to the second resonator structure through the intermediate resonator structure.

An apparatus comprising:

• first, intermediate, and second resonator structures, wherein a coupling rate between the first resonator structure and the intermediate resonator structure is κ1B and a coupling rate between the intermediate resonator structure and the second resonator structure is κB2;
• and
• means for adjusting at least one of the coupling rates κ1B and κB2 during wireless energy transfers among the resonator structures to reduce energy accumulation in the intermediate resonator structure and improve wireless energy transfer from the first resonator structure to the second resonator structure through the intermediate resonator structure.