Miniaturization of SCMR Systems Using Multilayer Resonators

Multilayer elements are used to miniaturize the size of highly efficient wireless power transfer systems based on the Strongly Coupled Magnetic Resonance (SCMR). Specifically, inspired by miniaturization techniques used in antennas, multilayer resonators in conformal SCMR systems (instead of single-layer resonators traditionally used) are tightly stacked to significantly shrink the size of CSCMR systems. An analytical methodology is developed, based on Kirchhoff's law and Maxwell's mutual inductance formula using elliptic integrals, which can predict the system's resonance. Excellent agreement is shown between analytical, simulated and measured results. Based on our results the proposed multilayer CSCMR systems can operate at significantly lower frequencies than traditional CSCMR systems, while maintaining significantly smaller size as well as providing significantly higher efficiency and transmission range than traditional CSCMR systems.