Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields

Baharuddin, Mohd Hafiz; Smartt, C.; Maricar, Mohamed Ismaeel; Thomas, David W.P.; Gradoni, G.; Creagh, Stephen C.; Tanner, G.

Abstract

A statistical approach using field-field correlation functions which is obtained from two-probe time domain measurement is used to characterize the radiation from complex devices. The time-frequency analysis provided by the measurement data has shown that significant emissions may only occur for a few percent of the time and a piecewise stationary model of emissions may be most appropriate. In this paper, a sorting technique is applied to short time segments of the nonstationary time-domain data provided by the measurements. These short time segments are sorted into groups according to the characteristics of the emissions, i.e. different emission processes, with the assumption that the stochastic emissions is stationary within each group (process). The ensemble of time segments associated with each group may then be used to obtain the field-field correlations for each process. Results of the analysis give promising insights into how to characterize complex and time dependent systems.

Citation

Baharuddin, M. H., Smartt, C., Maricar, M. I., Thomas, D. W., Gradoni, G., Creagh, S. C., & Tanner, G. (2018, August). Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields. Presented at International Symposium and Exhibition on Electromagnetic Compatibility (EMC EUROPE 2018), Amsterdam, Netherlands

• Presentation Conference Type: Edited Proceedings
• Conference Name: International Symposium and Exhibition on Electromagnetic Compatibility (EMC EUROPE 2018)
• Start Date: Aug 27, 2018
• End Date: Aug 30, 2018
• Acceptance Date: Mar 11, 2018
• Online Publication Date: Oct 8, 2018
• Publication Date: 2018
• Deposit Date: May 23, 2018
• Publicly Available Date: Oct 8, 2018
• Peer Reviewed: Peer Reviewed
• Pages: 208-213
• Series ISSN: 2325-0364
• Book Title: 2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE)
• ISBN: 978-1-4673-9699-8
• DOI: https://doi.org/10.1109/EMCEurope.2018.8485104
• Keywords: Nonstationary time domain data; Radiated emissions;Printed circuit boards; Piecewise stationary data; Time domainmeasurement; Segmentation technique; Sorting technique
• Public URL: https://nottingham-repository.worktribe.com/output/919608
• Publisher URL: https://ieeexplore.ieee.org/document/8485104
• Additional Information: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
• Contract Date: May 23, 2018