论文标题
在微波频率下测量的分裂环谐振阵列的复杂渗透性
The Complex Permeability of Split-Ring Resonator Arrays Measured at Microwave Frequencies
论文作者
论文摘要
我们已经测量了在狭窄的微波频率范围内使用$μ^\ prime <0 $的分裂环谐振器（SRR）阵列的相对渗透性。将SRR阵列加载到环路谐振器（LGR）的孔中，并使用反射系数测量来确定阵列有效渗透性的真实部分和假想部分。收集数据是阵列大小和SRR间距的函数。将结果与从连续扩展的拆分谐振器（ESRR）获得的结果进行了比较。与ESRR相比，平面SRR的阵列表现出增强的阻尼和频率较窄的频率范围。但是，当阵列大小从$ N $ srrs的一维数组扩展到$ 2 \ times 2 \ times 2 \ times n $阵列时，观察到的阻尼差异大大减少了。我们的方法还可以用于实验确定其他超材料设计的有效渗透性。
We have measured the relative permeability of split-ring resonator (SRR) arrays used in metamaterials designed to have $μ^\prime< 0$ over a narrow range of microwave frequencies. The SRR arrays were loaded into the bore of a loop-gap resonator (LGR) and reflection coefficient measurements were used to determine both the real and imaginary parts of the array's effective permeability. Data were collected as a function of array size and SRR spacing. The results were compared to those obtained from continuous extended split-ring resonators (ESRRs). The arrays of planar SRRs exhibited enhanced damping and a narrower range of frequencies with $μ^\prime<0$ when compared to the ESRRs. The observed differences in damping, however, were diminished considerably when the array size was expanded from a one-dimensional array of $N$ SRRs to a $2\times 2\times N$ array. Our method can also be used to experimentally determine the effective permeability of other metamaterial designs.
