NDLI: A realtime time-domain EMI measurement system for measurements above 1 GHz

Content Provider	IEEE Xplore Digital Library
Author	Braun, S. Hoffmann, C. Frech, A. Russer, P.
Copyright Year	2009
Description	Author affiliation: Technische Universität München, Institute for High-Frequency Engineering, Munich, Germany (Braun, S.; Hoffmann, C.; Frech, A.; Russer, P.)
Abstract	Emissions measurements performed in time-domain using ultra-fast analog-to-digital converter and real-time digital signal processing allow to reduce the measurement time by several orders of magnitude. In this paper a novel real-time operating time-domain EMI measurement system is presented for the frequency range up to 3 GHz. For the frequency range up to 1 GHz a noise figure about 8 dB has been achieved, while above 1 GHz the noise figure is below 6 dB. The system uses a multiresolution analog-to-digital converter system. Above 1 GHz an ultra-broadband down converter system with 325 MHz bandwidth allows to perform ultra-fast emission measurements. In comparison to existing heterodyne systems the measurement time is reduced by about a factor of 60 for 1 MHz IF Bandwidth and by a factor of 2000 for an IF Bandwidth of 120 kHz. Measurements have been carried out in the frequency range 30 MHz–3 GHz and have proven, that the system provides enough sensitivity for measurements over the complete frequency range.
Starting Page	143
Ending Page	146
File Size	292672
Page Count	4
File Format	PDF
ISBN	9781424442669
DOI	10.1109/ISEMC.2009.5284576
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Electromagnetic interference Time measurement Frequency measurement Bandwidth Performance evaluation Analog-digital conversion Noise figure Digital signal processing Real time systems
Content Type	Text
Resource Type	Article

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