Signal processing methods for time domain EMI measurements

被引：5
|
作者：
Krug, F [1 ]
Russer, P [1 ]
机构：
[1] Tech Univ Munich, Lehrstuhl Hochfrequenztech, D-80333 Munich, Germany
来源：
2003 IEEE International Symposium on Electromagnetic Compatibility (EMC), Vols 1 and 2, Symposium Record | 2003年
关键词：
time domain measurements; DFT; FFT; spectral analysis; electromagnetic interference;
D O I：
10.1109/ICSMC2.2003.1429156
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper we discuss the advantages of broad-band time-domain measurement techniques applied to electromagnetic interference (EMI) problems. The digital signal processing of EMI measurements allows to emulate in real-time the various modes of conventional analogous equipment, e.g. peak-, average-, RMS- and quasi-peak-detector mode. It is also possible to introduce new concepts of analysis, e.g. phase spectra, short-time spectra, statistical evaluation and FFT-based time-frequency analysis methods. Since time-domain techniques allow to process the amplitude and. phase information of the whole signal spectrum in parallel, the measurement time may be reduced by at least one order of magnitude. The signal processing algorithms and the measurement results obtained with the time-domain electromagnetic interference (TDEMI) measurement system are discussed.
引用
收藏
页码：1289 / 1292
页数：4
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