A general formulation for connecting sources and passive lumped-circuit elements across multiple 3-D FDTD cells

A previous extension of the finite-difference time-domain (FDTD) method to include lumpedcircuit elements is further extended to model lumped-element circuits connected across multiple FDTD cells. This formulation is needed to model many kinds of circuits, like those with a transistor or other activ...

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Bibliographic Details
Published inIEEE microwave and guided wave letters Vol. 6; no. 2; pp. 85 - 87
Main Authors Durney, C.H., Wenquan Sui, Christensen, D.A., Jingyi Zhu
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.02.1996
Institute of Electrical and Electronics Engineers
Subjects
Applied sciences
Circuit properties
Cities and towns
Dielectric devices
Distributed parameter circuits
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Finite difference methods
Integral equations
Joining processes
Maxwell equations
Microwave circuits
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Time domain analysis
Microstrip line
Transmission line
Time domain method
Lumped parameter circuit
Theoretical study
Parallel connection
Microwave circuit
Resistor
Finite difference method
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Summary:A previous extension of the finite-difference time-domain (FDTD) method to include lumpedcircuit elements is further extended to model lumped-element circuits connected across multiple FDTD cells. This formulation is needed to model many kinds of circuits, like those with a transistor or other active device connected across a transmission line with more than one dielectric. The FDTD analysis of a shielded suspended microstrip transmission line excited by a current source in parallel with a resistance illustrates the usefulness of the formulation.
ISSN:1051-8207
1558-2329
DOI:10.1109/75.481997