Analysis of the Electromagnetic Interaction Between Periodically Corrugated Transmission Lines Through the Mutual Capacitance and Mutual Inductance
Analysis of the Electromagnetic Interaction Between Periodically Corrugated Transmission Lines Through the Mutual Capacitance and Mutual Inductance
复制标题
通过互电容和互感分析周期性波纹传输线之间的电磁相互作用
DOI：
10.1109/access.2022.3143812
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发表时间：
2022-01-01
期刊：
影响因子：
3.9
通讯作者：
He, Fang
中科院分区：
文献类型：
--
作者：
Wu, Chia Ho;Zhou, Guobing;He, Fang
在这项研究中，我们建立了，第一次，在一个宽的频率范围内的耦合亚波长周期微带线（CSPML）的等效电路模型。由两条相同且平行的亚波长周期微带线组成的电路具有两个基模，奇数和偶数模式。基于这两个基本模式，有限元法（FEM）被用来提取电路参数，特别是频率依赖的行为的互电容和互感的CSPML。全波仿真和电路模型的S参数评估是高度一致的，最大偏差只有0.249 dB的传输系数低于15 GHz。通过优化亚波长周期结构，减小了相邻微带线之间的互电容和互感，从而抑制了相邻微带线之间的串扰。CSPML的差分和公共信号的特性阻抗的测量值也与数值计算结果吻合得很好。因此，我们期望CSPML电路模型的应用将加速超材料技术在现有高速电路系统中的应用。
In this study, we established, for the first time, an equivalent circuit model for coupled subwavelength periodic microstrip lines (CSPMLs) over a wide frequency range. The circuit composed of two identical and parallel subwavelength periodic microstrip lines has two fundamental modes, i.e., odd and even modes. Based on the two fundamental modes, the finite element method (FEM) is used to extract the circuit parameters, especially the frequency-dependent behavior of the mutual capacitance and mutual inductance for the CSPMLs. The S-parameters evaluated by full-wave simulation and the circuit model were highly consistent with a maximum deviation of only 0.249 dB for transmission coefficient below 15GHz. Because of reduced the mutual capacitance and mutual inductance, the crosstalk between two adjacent microstrip lines could be suppressed by optimizing the subwavelength periodic structure. The measured characteristic impedances for differential and common signals of CSPMLs also agree well with the numerical results. Therefore, we expect that the application of circuit models of CSPMLs would accelerate the use of metamaterial technology in the existing high-speed circuit systems.