Leapfrog ADI FDTD Method for Lumped Elements

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Wang, Wenbing^1 ; Chen, Yinhui^1 ; Ma, Liang^1 ; Zhou, Hui^1 ; Liu, Yifei^1

State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, China^1

关键词: ADI-FDTD method;    Alternating direction implicit finite difference time domain;    High-efficiency;    Iterated equation;    Multi-grid model;    Numerical experiments;    Stability condition;    Unconditional stability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/4/042173/pdf
DOI  :  10.1088/1757-899X/452/4/042173

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Leapfrog alternating direction implicit finite-difference time-domain (Leapfrog ADI-FDTD), a method with high computational efficiency, as well as it was proved to overcome CFL stability condition, the unconditional stability was given numerically, thus having a widely application in simulation. Lumped elements are introduced into Leapfrog ADI-FDTD method in this paper to further improvement of computational efficiency, single-grid updating equations of typical lumped elements are presented such as resistance, capacitor and inductor, what's more, multi-grid model are provided to simulate special lumped elements which owned more than one grid, and situation of application is analyzed through iterated equations. Its high efficiency and stability were verified by numerical experiments, thus providing a foundation for Leapfrog ADI-FDTD applied to integrated circuits.