Efficient computation of thin-layer structures with the unconditionally stable ADI-FDTD method

Efficient computation is a key consideration in computational electromagnetics, especially for complex VLSI structures that contain thin dielectric layers or electrically small objects. Due to the CFL stability condition, it is very inefficient to apply the conventional FDTD method to thin-layer str...

Full description

Saved in:
Bibliographic Details
Published inIEEE MTT-S International Microwave Symposium Digest, 2003 Vol. 2; pp. 1133 - 1136 vol.2
Main Authors Chenghao Yuan, Zhizhang Chen
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Boundary conditions
Computational electromagnetics
Computational modeling
Conductivity
Equations
Finite difference methods
Frequency
Microwave theory and techniques
Time domain analysis
Transistors
Online AccessGet full text

Cover

More Information
Summary:Efficient computation is a key consideration in computational electromagnetics, especially for complex VLSI structures that contain thin dielectric layers or electrically small objects. Due to the CFL stability condition, it is very inefficient to apply the conventional FDTD method to thin-layer structures because fine mesh (and therefore small time step) is required. In this paper, the unconditionally stable ADI-FDTD method is employed to circumvent the difficulty. With applications in computing effective dielectric constant (/spl epsiv//sub eff/) and characteristic impedance (Z/sub 0/) of cylindrical microstrip lines, it is shown that the computation time with the ADI-FDTD method is much shorter than that of the conventional FDTD method without sacrificing modeling accuracy.
ISBN:9780780376953
0780376951
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2003.1212568