Abstract

Signal layer transitions in differential lines are modeled using both FDTD and equivalent circuit methods. The equivalent circuit is developed based on transmission-line reasoning regarding via behavior. Parameters of each transmission-line segment are obtained based on its corresponding physical geometry. The mixed-mode S-parameters from the equivalent circuit and the FDTD modeling are compared. Good agreement is demonstrated in the frequency range from 1 GHz to 20 GHz. The results indicate that vias in differential lines can be modeled as a transmission line for a quick and easy engineering estimation of the differential signal behavior in an environment of signal layer transitions.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility (2002: Aug. 19-23, Minneapolis, MN)

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

Computational Geometry; Equivalent Circuits; Finite Difference Method; Frequencies; Time Domain Analysis; Differential Signal Behavior; Signal Layer Transitions; Electric Lines; Equivalent Circuit And Differential Transmission Line; FDTD

International Standard Book Number (ISBN)

780372646

International Standard Serial Number (ISSN)

0190-1494

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2002 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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