A Cross-Sectional Profile based Model for Stripline Conductor Surface Roughness

Author

Shaohui Yong
Victor Khilkevich, Missouri University of Science and TechnologyFollow
Yuanzhuo Liu
Ruijie He, Missouri University of Science and Technology
Yuandong Guo
Han Gao
Scott Hinaga
Darja Padilla
Douglas Yanagawa
Jun Fan, Missouri University of Science and TechnologyFollow
James L. Drewniak, Missouri University of Science and TechnologyFollow

Abstract

As the data rate of high-speed digital systems is getting higher, the conductor loss can no more be modeled assuming perfectly smooth conductor surfaces for even the smoothest foils available. The Huray model, based on the analytical calculation of the additional loss due to the scattering/absorption from conductive spheres on a smooth plane, has been presented to account for this issue. However, in practice it is very difficult to determine the parameters of the model. A modeling approach relating the parameters of the model to the conductor roughness profiles is needed. In this paper an investigation of the scattering by metal hemispheres, including their interaction, is performed. A method is brought up to estimate the multi-level physical model's parameters using the scanning electron microscope (SEM) or optical cross-sectional profile imaging. Accurate modeling of the frequency-dependent conductor loss is achieved.

Recommended Citation

S. Yong and V. Khilkevich and Y. Liu and R. He and Y. Guo and H. Gao and S. Hinaga and D. Padilla and D. Yanagawa and J. Fan and J. L. Drewniak, "A Cross-Sectional Profile based Model for Stripline Conductor Surface Roughness," Proceedings of the 2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, pp. 334 - 339, Institute of Electrical and Electronics Engineers (IEEE), Sep 2020.

The definitive version is available at https://doi.org/10.1109/EMCSI38923.2020.9191620

Meeting Name

2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity, EMCSI 2020 (2020: Jul. 27-31, Virtual)

Department(s)

Electrical and Computer Engineering

Comments

National Science Foundation, Grant IIP-1916535

Keywords and Phrases

Printed Circuit Boards; Signal Integrity; Skin Effect; Striplines; Surface Roughness

International Standard Book Number (ISBN)

978-172817430-3

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

10 Sep 2020