A new algorithm for the incorporation of arbitrary linear lumped networks into FDTD simulators

The inclusion of lumped elements, both linear and nonlinear, into the finite-difference time-domain (FDTD) algorithm has been recently made possible by the introduction of the lumped element FDTD method. Such a method, however, cannot efficiently and accurately account for two-terminal networks made...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1999-06, Vol.47 (6), p.943-949
Hauptverfasser: Pereda, J.A., Alimenti, F., Mezzanotte, P., Roselli, L., Sorrentino, R.
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container_end_page 949
container_issue 6
container_start_page 943
container_title IEEE transactions on microwave theory and techniques
container_volume 47
creator Pereda, J.A.
Alimenti, F.
Mezzanotte, P.
Roselli, L.
Sorrentino, R.
description The inclusion of lumped elements, both linear and nonlinear, into the finite-difference time-domain (FDTD) algorithm has been recently made possible by the introduction of the lumped element FDTD method. Such a method, however, cannot efficiently and accurately account for two-terminal networks made of several lumped elements, arbitrarily connected together. This limitation can be removed as proposed in this paper by describing the network in terms of its impedance in the Laplace domain and by using appropriate digital signal-processing methodologies to fit the resulting description to Yee's algorithm. The resulting difference equations allow an arbitrary two-terminal network to be inserted into one FDTD cell, preserving the full explicit nature of the conventional FDTD scheme and requiring a minimum number of additional storage variables. The new approach has been validated by comparison with the exact solution of a parallel-plate waveguide loaded with lumped networks in the transverse plane.
doi_str_mv 10.1109/22.769330
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subjects Algorithms
Associate members
Circuit simulation
Computational modeling
Difference equations
Electromagnetic analysis
Electromagnetic radiation
Exact solutions
Finite difference method
Finite difference methods
Finite difference time domain method
Impedance
Mathematical analysis
Microwaves
Networks
RLC circuits
Simulators
Time domain analysis
title A new algorithm for the incorporation of arbitrary linear lumped networks into FDTD simulators
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