Abstract. In this paper, an advanced ultra-fast, broadband time domain EMI measurement system is described. Measurements were performed in the 30–1000MHz range. The digital signal processing of EMI measurements allows to emulate in real-time the modes of conventional analogous equipment, e.g. Peak-, Average-, RMS- and Quasi-Peak- Detector. With the presented time domain measurement system the measurement time can be reduced by a factor of 10. A novel signal recording routine for time-domain EMI (TDEMI) measurements and Quasi-Peak-Detection is described. Measurement results obtained from the investigation of a drillmachine, monitor and laptop obtained with the timedomain electromagnetic interference (TDEMI) measurement system are discussed. The results obtained with the described system have been compared with measurements performed with a conventional EMI receiver.
[1]
P. Russer,et al.
Ultra-fast broadband EMI measurement in time domain using classical spectral estimation
,
2002,
2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).
[2]
Peter Russer,et al.
Ultra-fast broadband EMI time-domain measurement system
,
2002
.
[3]
Peter Russer,et al.
The time-domain electromagnetic interference measurement system
,
2003
.
[4]
Peter Russer,et al.
Time-Domain Broad-Band EMI Measurement Techniques
,
2002,
2002 32nd European Microwave Conference.
[5]
W. M. Carey,et al.
Digital spectral analysis: with applications
,
1986
.
[6]
L. Cohen,et al.
Time-frequency distributions-a review
,
1989,
Proc. IEEE.