Near-Field Scan of Multiple Noncorrelated Sources using Blind Source Separation
A method for separation of the field contributions generated by multiple noncorrelated sources is proposed. The measurements are implemented using one scanning probe and one (or more) stationary reference probe, avoiding the requirement to measure the spatial correlations of the random fields. The contribution of each source can be determined with the assistance of the blind source separation technique. Averaging over realizations allows to cancel the uncorrelated part in the mixed signal measured by the scanning probe. The separated results can be used to localize the emission sources and their contribution to the field pattern. The method was tested on different signals with amplitude and frequency modulation with passive (antenna) and active (IC) sources.
Y. Liu et al., "Near-Field Scan of Multiple Noncorrelated Sources using Blind Source Separation," IEEE Transactions on Electromagnetic Compatibility, vol. 62, no. 4, pp. 1376 - 1385, Institute of Electrical and Electronics Engineers (IEEE), May 2020.
The definitive version is available at https://doi.org/10.1109/TEMC.2020.2991392
Electrical and Computer Engineering
Intelligent Systems Center
Keywords and Phrases
Blind Source Separation (BSS); Electromagnetic Interference (EMI); Modulated Signals; Near Field Scan (NFS); Phase Resolving; Random Fields
International Standard Serial Number (ISSN)
Article - Journal
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25 May 2020