Li Haonan, Dong Hongxing, Zhang Yaqiang, Mou Nanli, Xin Yao, Deng Ruixiang, Zhang Long
Opt Express. 2021 Jun 7;29(12):18446-18457. doi: 10.1364/OE.427318.
In this study, a transparent ultra-wideband double-resonance-layer absorber was designed using a semiempirical optimization method. In this method, an equivalent circuit model, genetic algorithm, and parameter fitting are employed to reduce the computation time and improve the design flexibility. Simulations and measurements show that the as-designed absorber can achieve ultrawide microwave absorption in the range of 2.00 to 11.37 GHz with a fractional bandwidth of 140.2%. Furthermore, electric field and surface current distributions show that the broad bandwidth was derived from the good matching of the absorption peaks in the two resonance layers. In addition, the target waveband of the as-designed absorber covered the wavebands of WiFi and radio-frequency identification, as well as part of the 5G waveband. This makes the proposed absorber a good candidate for daily electromagnetic pollution reduction.
在本研究中，采用半经验优化方法设计了一种透明超宽带双谐振层吸波器。在该方法中，运用等效电路模型、遗传算法和参数拟合来减少计算时间并提高设计灵活性。仿真和测量结果表明，所设计的吸波器在2.00至11.37 GHz范围内可实现超宽微波吸收，分数带宽为140.2%。此外，电场和表面电流分布表明，宽带宽源于两个谐振层中吸收峰的良好匹配。此外，所设计吸波器的目标波段覆盖了WiFi和射频识别的波段以及部分5G波段。这使得所提出的吸波器成为降低日常电磁污染的良好候选方案。
