Numerical simulation of microstrip resonators and filters using the ADI-FDTD method

被引：16

作者：

Namiki, T ^{[1
]}

Ito, K

机构：

[1] Fujitsu Ltd, Comp Sci & Engn Ctr, Chiba 2618588, Japan

[2] Chiba Univ, Dept Urban Environm Syst, Chiba 2638522, Japan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2001年 / 49卷 / 04期

关键词：

ADI-FDTD method; CFL stability condition; FDTD method; microstrip filter; microstrip resonator;

D O I：

10.1109/22.915440

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we derived the characteristics of typical and practical microstrip components such as microstrip linear resonators and microstrip low-pass filters using the alternating-direction-implicit-finite-difference-time-domain (ADI-FDTD) method to examine the calculation accuracy and efficiency of the method. The resonators and the filters included very narrow gaps and strips, respectively. In this case, very fine cells must be applied there for the finite-difference time-domian (FDTD) modeling, In the conventional FDTD method, fine cells cause a reduction of the time-step size because of the Courant-Friedrich-Levy (CFL) stability condition, which results in an increase in calculation time. In the ADI-FDTD method, on the other hand, a larger time-step size than the CFL stability condition limitation could be set. We compared the results of the ADI-FDTD method for various time-step sizes with the results of the conventional FDTD method and measured data.

引用

页码：665 / 670

页数：6

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