Single-coil Design Approach for Dual-band Near-field Coupled Resonators

Lai Ly Pon
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Abstract

With the adoption of single coil approach, printed spiral resonator design strategy for near-field wireless energy transfer is presented. A pair of symmetrical resonators operating at high frequency band specifically 6.78 MHz and 13.56 MHz is designed. Simulated power transfer efficiency (PTE) of over 88% are obtained for both frequencies when coupled spiral resonators separated at a distance of 25 mm is integrated with hybrid compensation network topology. The variance of PTE between both frequencies is about 0.04.
双频近场耦合谐振器的单线圈设计方法
采用单线圈的方法,提出了用于近场无线能量传输的印刷螺旋谐振器的设计策略。设计了一对工作在6.78 MHz和13.56 MHz高频段的对称谐振器。将距离为25mm的耦合螺旋谐振器与混合补偿网络拓扑相结合,两个频率的模拟功率传输效率均超过88%。两个频率间PTE的方差约为0.04。
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