Hybrid dynamic-quasi-static finite-difference analysis of MMIC components with non-ideal conductivity

Abstract This paper treats the finite-difference (FD) analysis of passive MMIC components including finite conductivity. Quasi-static field simulations are used to estimate the field and current distribution in miniaturized structures. The results are used to determine so-called correction factors, which are incorporated into the FD equations of the hybrid method's dynamic part. This allows to reduce computational efforts while maintaining accuracy of the conventional FD method. Verification is done by applying the hybrid approach to coplanar transmission-line elements. Results from conventional FD analysis and mode matching simulations serve as a reference.

[1]  W. Heinrich,et al.  Full-wave analysis of conductor losses on MMIC transmission lines , 1989 .

[2]  Peter Russer,et al.  Hybrid dynamic-static finite-difference approach for MMIC design , 1996, 1996 IEEE MTT-S International Microwave Symposium Digest.

[3]  T. Weiland,et al.  Maxwell's Grid Equations , 1990 .

[4]  A. Cangellaris,et al.  Applications of field singularities at wedges and corners to time domain finite difference or finite element methods of field computations , 1987 .

[5]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[6]  J. P. McGeehan,et al.  Analysis of microstrip discontinuities using the finite difference time domain technique , 1989, IEEE MTT-S International Microwave Symposium Digest.

[7]  W. Heinrich,et al.  FDTD accuracy improvement by incorporation of 3D edge singularities , 1999, 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).

[8]  K. Yee Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media , 1966 .

[9]  Thomas Weiland,et al.  On the Unique Numerical Solution of Maxwellian Eigenvalue Problems in Three-dimensions , 1984 .

[10]  Ian J Craddock,et al.  A new technique for the stable incorporation of static field solutions in the FDTD method for the analysis of thin wires and narrow strips , 1998 .

[11]  W. Heinrich,et al.  Treatment of field singularities in the finite-difference approximation , 1993, 1993 IEEE MTT-S International Microwave Symposium Digest.

[12]  G. Mur The Modeling of Singularities in the Finite-Difference Approximation of the Time-Domain Electromagnetic-Field Equations , 1981 .

[13]  W. Heinrich,et al.  Efficient Analytical Description of Metal Loss in Finite-Difference Waveguide Analysis , 2000, 2000 30th European Microwave Conference.

[14]  Chris J. Railton,et al.  The incorporation of static field solutions into the finite-difference time domain algorithm MMIC structures modelling , 1992 .

[15]  W. Heinrich,et al.  Efficient FD formulation for lossy waveguide analysis based on quasi-static field characteristics , 1999 .

[16]  Chris J. Railton The inclusion of fringing capacitance and inductance in FDTD for the robust accurate treatment of material discontinuities , 2000, IMS 2000.

[17]  W. Heinrich,et al.  Improved finite-difference formulation in frequency domain for three-dimensional scattering problems , 1992 .

[18]  W. Heinrich,et al.  Analytical description of metal loss in finite-difference transmission-line analysis , 2002 .

[19]  W. Heinrich,et al.  3D hybrid finite-difference method for lossy structures based on quasi-static field solutions , 2002, IEEE MTT-S International Microwave Symposium Digest.