Improved Transmission Line Model of Double-layer Metal Meshes for Reflection Coefficient Calculation

Aiming at the absence of analytical model of reflection coefficient calculation of double-layer metal meshes and the difficulty of accurate calculation, this paper presents a new broadband equivalent transmission line model of reflection coefficient of double-layer metal meshes, which can realize accurate calculation in a wide frequency range. Based on the optimized equivalent impedance model of single-layer metal mesh and the transmission line theory, the reflection coefficient of double-layer metal meshes is calculated. The calculation results show that the analytical model in this paper is very consistent with the calculation results of the commercial simulation software CST, which can realize the accurate calculation of reflection coefficient in the broadband and can still ensure the relative accuracy of the reflection coefficient in the resonant region, while the original impedance model is very different in the resonant region.