Implicit incorporation of nonlinear elements for unconditionally stable FDTD analysis at coarse time-steps

Author

Celuch-Marcysiak, M. ; Gwarek, W.K.

Author_Institution

Inst. of Radioelectron., Warsaw Univ. of Technol., Poland

Volume

3

fYear

1996

fDate

17-21 June 1996

Firstpage

1381

Abstract

A hybrid 3D FDTD algorithm with a fully implicit interface to lumped nonlinear multiport devices is presented. The algorithm is unconditionally stable and converges for arbitrarily strong nonlinearities, high voltages and with any time-step satisfying the Courant condition. In case of a strongly nonlinear bipolar transistor, the new algorithm is by over two orders of magnitude faster than previous FDTD schemes with explicit or semi-implicit interfaces.

Keywords

bipolar transistor circuits; finite difference time-domain analysis; lumped parameter networks; multiport networks; nonlinear network analysis; numerical stability; Courant condition; bipolar transistor; coarse time-step; convergence; hybrid 3D FDTD algorithm; implicit interface; lumped multiport device; nonlinear circuit element; unconditional stability; Bipolar transistors; Circuit simulation; Computational modeling; Electromagnetic modeling; Finite difference methods; Maxwell equations; Nonlinear equations; Semiconductor diodes; Time domain analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1996., IEEE MTT-S International

Conference_Location

San Francisco, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-3246-6

Type

conf

DOI

10.1109/MWSYM.1996.512193

Filename

512193