Accuracy of Physics-Based Via Models for Simulation of Dense Via Arrays

Author

Sebastian Müller
Xiaomin Duan
Miroslav Kotzev
Yaojiang Zhang, Missouri University of Science and TechnologyFollow
Jun Fan, Missouri University of Science and TechnologyFollow
Xiaoxiong Gu
Young H. Kwark
Renato Rimolo-Donadio
Heinz Dietrich Brüns
Christian Schuster

Abstract

This paper studies the accuracy of the physics-Based via model, specifically when applied to dense via arrays. the physics-Based model uses Greens functions for cylindrical waves in radial waveguides to model the via return current paths and the coupling between vias. the effects of approximations made in this model are studied with regard to four types of modes based on an eigenmode expansion for the radial waveguide. It is found that for the mode conversion in the vicinity of the via, an accurate consideration of Non propagating modes becomes critical with an increasing cavity height. for the interaction between vias in dense arrays, anisotropic modes have an impact for small pitches, whereas the coupling by Non propagating modes is small for practical printed circuit board dimensions. for a data rate of 20 Gb/s, conclusions with regard to the applicability of the physics-Based via model to a multilayer structure are drawn. for 80-mil pitch, a good agreement to full-wave results can be observed. Measurements have been carried out to validate this finding. for 40-mil pitch, the accuracy of the physics-Based via model is not sufficient for data rates of 20 Gb/s or higher. © 1964-2012 IEEE.

Recommended Citation

S. Müller and X. Duan and M. Kotzev and Y. Zhang and J. Fan and X. Gu and Y. H. Kwark and R. Rimolo-Donadio and H. D. Brüns and C. Schuster, "Accuracy of Physics-Based Via Models for Simulation of Dense Via Arrays," IEEE Transactions on Electromagnetic Compatibility, vol. 54, no. 5, pp. 1125 - 1136, article no. 6193423, Institute of Electrical and Electronics Engineers, May 2012.

The definitive version is available at https://doi.org/10.1109/TEMC.2012.2192123

Department(s)

Electrical and Computer Engineering

Comments

National Science Foundation, Grant 0855878

Keywords and Phrases

Mode conversion; Parallel plates; Physics-based via model; Power distribution network; Printed circuit board (PCB); Signal integrity

International Standard Serial Number (ISSN)

0018-9375

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

08 May 2012