Real-time EM spectrum and EM interference measurement techniques

Time-domain EM spectrum and electromagnetic interference (EMI) measurement systems sample the broad-band EMI signal with GHz sampling rates and compute the EMI spectrum by digital signal processing, e.g. by the fast Fourier transform (FFT). This yields a considerable reduction of the measurement time by up to five orders of magnitude.

[1]  M. S. Babtlett Smoothing Periodograms from Time-Series with Continuous Spectra , 1948, Nature.

[2]  M. Al-Qedra,et al.  A Real-time Multiresolution Time-domain EMI Measurement System based on Ultra-fast High Resolution Analog-to-Digital Converters , 2006, 2006 International Conference on Microwaves, Radar & Wireless Communications.

[3]  K. Wiklundh,et al.  Relation between the amplitude probability distribution of an interfering signal and its impact on digital radio receivers , 2006, IEEE Transactions on Electromagnetic Compatibility.

[4]  P. Welch The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms , 1967 .

[5]  F. Krug,et al.  Signal processing strategies with the tdemi measurement system , 2003, Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412).

[6]  P. Russer,et al.  Measurements of spurious emission with a time-domain EMI measurement system using multi-sampling techniques , 2006, 2006 IEEE International Symposium on Electromagnetic Compatibility, 2006. EMC 2006..

[7]  Peter Russer,et al.  Ultra-fast broadband EMI measurement in time-domain using FFT and periodogram , 2002, 2002 IEEE International Symposium on Electromagnetic Compatibility.

[8]  Peter Russer,et al.  A low-noise realtime time-domain EMI measurement system , 2007, 2007 18th International Zurich Symposium on Electromagnetic Compatibility.

[9]  P. Russer,et al.  Quasi-peak detector model for a time-domain measurement system , 2005, IEEE Transactions on Electromagnetic Compatibility.

[10]  Christos Christopoulos Principles and Techniques of Electromagnetic Compatibility , 2007 .

[11]  R. L. Belding,et al.  Receiver Measurements Near the Noise Floor , 1986, 1986 IEEE International Symposium on Electromagnetic Compatibility.

[12]  Peter Russer,et al.  A Time-Domain system for EMI measurements above 1 GHz with high sensitivity , 2011, 2011 German Microwave Conference.

[13]  Yukio Yamanaka,et al.  Statistical parameter measurement of unwanted emission from microwave ovens [digital mobile radio interference] , 1995, Proceedings of International Symposium on Electromagnetic Compatibility.

[14]  P. Russer,et al.  A low-noise multiresolution high-dynamic ultra-broad-band time-domain EMI measurement system , 2005, IEEE Transactions on Microwave Theory and Techniques.

[15]  Peter Russer,et al.  A realtime time-domain EMI measurement system for measurements above 1 GHz , 2009, 2009 IEEE International Symposium on Electromagnetic Compatibility.

[16]  Peter Russer,et al.  A novel multichannel amplitude probability distribution for a time-domain EMI measurement system according to CISPR 16-1-1 , 2011, 10th International Symposium on Electromagnetic Compatibility.

[17]  P. Russer,et al.  Development and Evaluation of a Realtime Time-Domain EMI Measurement System for Automotive Testing , 2007, 2007 IEEE International Symposium on Electromagnetic Compatibility.

[18]  Peter Russer,et al.  A time-domain system for the measurement of non-stationary EMI up to 40 GHz , 2012, 2012 Asia-Pacific Symposium on Electromagnetic Compatibility.

[19]  Peter Russer,et al.  A Broadband Time-Domain EMI Measurement System for Measurements up to 18 GHz , 2010, EMC 2010.

[20]  P. Russer,et al.  A broadband, low-noise time-domain system for EMI measurements through Ka-band up to 40 GHz , 2012, 2012 IEEE International Symposium on Electromagnetic Compatibility.

[21]  P. Russer,et al.  A Real-Time Time-Domain EMI Measurement System for Full-Compliance Measurements According to CISPR 16-1-1 , 2008, IEEE Transactions on Electromagnetic Compatibility.

[22]  P. Russer,et al.  Uncertainty Analysis and Novel Test Procedures Performed with a Realtime Time-Domain EMI Measurement System , 2007, 2007 IEEE International Symposium on Electromagnetic Compatibility.

[23]  S. Braun,et al.  A novel realtime time-domain EMI measurement system based on field programmable gate arrays , 2006, 2006 17th International Zurich Symposium on Electromagnetic Compatibility.

[24]  P. Russer,et al.  A novel automatic digital quasi-peak detector for a time domain measurement system , 2004, 2004 International Symposium on Electromagnetic Compatibility (IEEE Cat. No.04CH37559).

[25]  P. Russer,et al.  A Real-Time Low-Noise Ultrabroadband Time-Domain EMI Measurement System up to 18 GHz , 2011, IEEE Transactions on Electromagnetic Compatibility.

[26]  P. Russer,et al.  Development of a multiresolution time domain EMI measurement system that fulfills CISPR 16-1 , 2005, 2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005..