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首页> 外文期刊>AIP Advances >Multiple magnetic resonance and microwave absorption of metamaterial absorbers composed of double split ring resonators on grounded carbonyl iron composites
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Multiple magnetic resonance and microwave absorption of metamaterial absorbers composed of double split ring resonators on grounded carbonyl iron composites

机译：多个磁共振和微波吸收的超材料吸收剂，由双链环谐振器组成的接地羰基铁复合材料

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This study investigates the triple-band absorption properties of metamaterial absorbers composed of a double split ring resonator (DSRR) on a grounded magnetic substrate of carbonyl iron powders. Computational tools are used to model the interaction between electromagnetic waves and the metamaterial structure. For perpendicular polarization with the electric field perpendicular to the SRR gap, triple-band absorption peaks are predicted in the simulation result of reflection loss. Magnetic resonance resulting from antiparallel currents between the upper DSRR and the lower ground plane is identified at the frequencies of the absorption peaks. The orientation of the two resonators influences the absorption characteristics, especially in the second and third peaks where the coupling between the inner SRR and outer SRR is strong. The current density distribution indicates that the two resonators oriented in the same direction achieve reduced coupling between them, which results in two absorption frequencies close to each other. For parallel polarization with the electric field parallel to the SRR gap, this study predicts dual-band absorption peaks corresponding to the magnetic resonance at the SRR wire.
机译：本研究研究了在羰基粉末的接地磁体基材上由双链环谐振器（DSRR）组成的超材料吸收剂的三带吸收性能。计算工具用于建模电磁波与超材料结构之间的相互作用。对于垂直于SRR间隙的电场的垂直偏振，在反射损耗的模拟结果中预测了三带吸收峰。在吸收峰的频率下识别由上部DSRR和下地平面之间的反平行电流产生的磁共振。两个谐振器的取向会影响吸收特性，尤其是在第二和第三峰值中，其中内部SRR和外部SRR之间的耦合强烈。电流密度分布表明，在相同方向上取向的两个谐振器在它们之间实现了减少的耦合，这导致彼此接近的两个吸收频率。对于与SRR间隙平行的电场的平行偏振，该研究预测了对应于SRR线处的磁共振的双带吸收峰。

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