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This paper presents advanced digital signal algorithms for adaptive filtering applied for noise cancellation and signal analysis in real-time. Correlated and not-correlated signal parts are distinguished by such methods based on the statistical characteristics of the received signals. Real-time measurements of electromagnetic interference (EMI) in noisy environments are shown. An advanced digital...
According to the standard CISPR 16-2-3 measurements of electromagnetic interferences (EMI) are carried out either in anechoic chambers or on open area test sites. For testing on open test sites it is necessary to choose a remote location where man-made noise is minimum to avoid covering of the emissions of the device under test by ambient signals. The regulated measurement setup and procedure, described...
Traditionally measurements of electromagnetic interference (EMI) are carried out in frequency domain resulting in long testing times according to the frequency range and resolution in frequency. By applying time-domain technology EMI measurements can be done now in real-time for a broad frequency range of several hundred Megahertz. This paper presents advanced strategies with real-time capability...
By applying time-domain methods the measurement time for emissions measurements is reduced by several orders of magnitude. In this paper a novel real-time capable ambient noise cancelling system is presented to perform measurements of electromagnetic interference (EMI) in time-domain during the presence of ambient noise. The hardware implementation of the least-mean-square (LMS) algorithm in combination...
Time-domain EMI Measurement Systems allow to reduce the measurement time by several orders of magnitude. In this paper a realtime operating low-noise multiresolution timedomain EMI measurement system is presented. With a noise figure of about 7.5 dB and a high dynamic range emission measurements can be carried out close to the noise floor, while a high overload protection is available. A novel implementation...
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