Signal processing strategies with the TDEMI measurement system

A low-cost electromagnetic compatibility precompliance test-set is essential to reduce the development costs of any electrical device. In this paper we discuss the advantages of broadband time-domain preliminary compliance measurement techniques applied to all types of electromagnetic interferences. The digital signal processing of electromagnetic interference measurements allows emulating in real-time the various modes of conventional analogous equipment, e.g., peak, average, root mean square, and quasi-peak detector mode. Since time-domain techniques allow processing the whole amplitude spectrum in parallel, the measurement time may be reduced by at least one order of magnitude. Compliance measurement results for conducted and radiated emissions obtained with the time-domain electromagnetic interference (TDEMI) system are shown. The TDEMI system has a real-time bandwidth of 1.5 GHz. Measurement techniques for nonstationary signals and single events are discussed.     «

A low-cost electromagnetic compatibility precompliance test-set is essential to reduce the development costs of any electrical device. In this paper we discuss the advantages of broadband time-domain preliminary compliance measurement techniques applied to all types of electromagnetic interferences. The digital signal processing of electromagnetic interference measurements allows emulating in real-time the various modes of conventional analogous equipment, e.g., peak, average, root mean square,...     »

electromagnetic interference, time-domain analysis, electromagnetic compatibility, electric variables measurement, time-domain measurements, digital signal processing, signal processing, fast Fourier transform, spectral analysis, 1.5 GHz, discrete Fourier transforms, FFT, time-domain measurement, TDEMI measurement system, amplitude spectrum, analogous equipment, broadband time-domain compliance measurement, conformance testing, electromagnetic compatibility precompliance test-set, electromagnetic interference measurements, measurement, nonstationary signals, time-domain electromagnetic interference system, time-domain techniques, Digital signal processing     «

electromagnetic interference, time-domain analysis, electromagnetic compatibility, electric variables measurement, time-domain measurements, digital signal processing, signal processing, fast Fourier transform, spectral analysis, 1.5 GHz, discrete Fourier transforms, FFT, time-domain measurement, TDEMI measurement system, amplitude spectrum, analogous equipment, broadband time-domain compliance measurement, conformance testing, electromagnetic compatibility precompliance test-set, electromagneti...     »