Modeling of High Temperature Superconducting Coplanar Waveguides for microwave propagation under a magnetic field

2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI:10.1109/ICMAP.2013.6733510

J. Andrews, V. Mathew

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引用次数: 1

Abstract

The microwave propagation through a High Temperature Superconducting (HTS) Coplanar Waveguide (CPW) exposed to a magnetic field is simulated for a wide range of temperature, applied field and transmission line geometry. The magnetic field effects of a HTS coplanar waveguide is studied using the modified two-fluid model proposed by Coffey and Clem (CC). The surface impedance of the high temperature superconducting strip is determined using the CC model. This enters as the complex valued resistive boundary condition and by using the Galerkin's procedure, we study the propagation parameters and the unloaded Q value of the coplanar waveguide. The spectral domain dyadic Green's functions for the transmission line are formulated by treating coplanar waveguide as a coupled slotline. The results are in tune with the vortex dynamics explored by CC model. The simulation of transmission characteristics of the coplanar waveguide in the microdimensions shows lower dispersion and attenuation. The variations in signal transmission are explained using the vortex effects.

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磁场作用下微波传播的高温超导共面波导模型

模拟了高温超导共面波导(CPW)在不同温度、外加磁场和传输线几何形状下的微波传播。采用Coffey和Clem (CC)提出的修正双流体模型研究了高温超导共面波导的磁场效应。采用CC模型确定了高温超导带的表面阻抗。这作为复值电阻边界条件，利用伽辽金方法研究了共面波导的传输参数和空载Q值。将共面波导视为耦合槽线，建立了传输线的谱域并矢格林函数。结果与CC模型所探索的涡旋动力学一致。在微观尺度上对共面波导传输特性的仿真表明，共面波导具有较低的色散和衰减。利用涡旋效应解释了信号传输中的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 International Conference on Microwave and Photonics (ICMAP)

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