Hybrid SRR-based Stacked Metamaterial for Miniaturized Dual-band Wireless Power Transfer System
Hybrid SRR-based Stacked Metamaterial for Miniaturized Dual-band Wireless Power Transfer System
复制标题
用于小型化双频无线电力传输系统的基于混合 SRR 的堆叠超材料
DOI：
10.1109/tap.2023.3262977
复制
发表时间：
2023
影响因子：
5.7
通讯作者：
Yoshitomi Kuniaki
中科院分区：
文献类型：
--
作者：
Jiang Xin;Pokharel Ramesh K.;Barakat Adel;Yoshitomi Kuniaki
提出了一种新型堆叠宽带超材料，用于一种鲁棒、紧凑的双频无线电能传输系统。所提出的超材料采用由非均匀电容器加载的开口环谐振器（SRR）单元。首先，分析了表现出两个谐振频率的两种类型的单位单元。结果表明，它只能改善发射机（Tx）和接收机（Rx）之间的耦合在单频带。然后，将每个单胞相互夹在一起，最终提出了指示三个谐振频率的混合单胞。混合SRR在感兴趣的宽频率范围内表现出接近零的磁导率。因此，所提出的超材料在两个频带同时有效。该系统的制造和测试，包括一个紧凑的双频WPT系统。Tx（Rx）和超材料的尺寸分别为和mm。在20 mm的功率传输距离下，测量的品质因数（FOM）在390 MHz时为0.92，在770 MHz时为0.85，这比最近提出的具有超材料的双频带WPT系统有了显着的改进。
A novel stacked wideband metamaterial is proposed for a robust and compact dual-band wireless power transfer (WPT) system. The proposed metamaterial employs split-ring resonator (SRR) unit cells loaded by nonuniform capacitors. First, two types of unit cells that exhibit two resonance frequencies are analyzed. The results show that it can only improve the coupling between the transmitter (Tx) and the receiver (Rx) at the single band. Then, each unit cell is sandwiched with each other, and a hybrid unit cell that indicates three resonance frequencies is finally proposed. The hybrid SRR exhibits near-zero permeability within the wide frequency range of interest. Therefore, the proposed metamaterial is effective at both bands simultaneously. The system was fabricated and tested, including a compact dual-band WPT system. The size of the Tx (Rx) and the metamaterial isandmm, respectively. The measured figures of merit (FOM) are 0.92 at 390 MHz and 0.85 at 770 MHz at a power transfer distance of 20 mm, which is a significant improvement over recently proposed dual-band WPT systems with metamaterials.