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Characteristic mode analysis of radiating structures in digital systems
Publikationstyp
Journal Article
Date Issued
2016-10-01
Sprache
English
Author(s)
Institut
TORE-URI
Volume
5
Issue
4
Start Page
56
End Page
63
Article Number
7866235
Citation
IEEE Electromagnetic Compatibility Magazine 4 (5): 7866235 56-63 (2016-10-01)
Publisher DOI
Scopus ID
Publisher
IEEE
This paper investigates the applicability of the characteristic mode analysis (CMA) to radiating structures in digital systems up to 3 GHz. It is shown that the eigencurrent distribution and the magnitude of the corresponding eigenvalues are two key factors to reduce radiated emission (RE) of potential radiators. A visualization of the eigencurrents provides useful insights into the optimal placement of signal and power routing, grounding, and placement of loads. Typical radiators in digital systems are analyzed, including ungrounded circuit loops, connected circuit boards, and metallic heatsinks. The examples show that a significant reduction of radiated power can be achieved by using CMA and hence, illustrate the usefulness of the proposed method for the EMC design of digital systems.
Subjects
Characteristic mode analysis
digital systems
metallic radiator
method of moments
radiated emission
DDC Class
600: Technik
More Funding Information
Supported in part by the Alexander von Humboldt Foundation, Germany.