3D Hybrid Finite-Difference Method for Lossy Structures Based on Quasi-Static Field Solutions

Published in:
IEEE MTT-S Int. Microwave Symp. Dig., vol. 3, 2002, pp. 1881 - 1884.
© 2002 The IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Abstract:
A new 3D hybrid finite-difference (FD) method is presented that accounts for finite conductivity. The field gradients inside conductors and structural details are treated combining quasi-static field solutions with the full-wave analysis. In the quasi-static regime, the magnetic field computations and the corresponding source formulation needs special consideration. The hybrid method reduces computational efforts while maintaining accuracy of the conventional FD scheme. The new approach is verified for a MMIC coplanar short stub and airbridges.

Full version in pdf-format.