TY - GEN
T1 - A real-time multiresolution time-domain EMI measurement system based on ultra-fast high resolution analog-to-digital converters
AU - Braun, Stephan
AU - Iliev, Stoyan
AU - Al-Qedra, Mohammed
AU - Russer, Peter
PY - 2006
Y1 - 2006
N2 - In the past and now measurements of electromagnetic interference (EMI) are carried out by EMI-Receivers operating in frequency-domain. By a time-domain EMI measurement system the measurement time can be reduced by several orders of magnitude. In this paper a novel real-time time-domain EMI measurement system that uses a hardware implementation of the Fast Fourier Transform and the detector modes is described. A multiresolution Time-domain EMI System has been developed that processes the EMI Signal by several parallel Analog-to-Digital Converters with an improved dynamic range. The signals are digitized by three 10 bit ADCs which operate at 2.3 GS/s. The obtained EMI signal with a high resolution is further processed in real-time by a decimation filter and a short time fast Fourier transform on the Field Programmable Gate Array. By this way the measurement time can be reduced by a factor of 2000 in comparison to EMI Receivers and Spectrum Analyzers. Due to the real-time implementation auxiliary outputs that are provided by EMI Receivers as well as Spectrum analyzers can also be provided by a Time-domain EMI Measurement System. The two tone intermodulation distortion as well as the measurement accuracy of the Time-domain EMI Measurement System have been experimentally investigated in the frequency range 30 MHz - 1 GHz. The maximum deviation in comparison to an EMI Receiver has been 1.5 dB.
AB - In the past and now measurements of electromagnetic interference (EMI) are carried out by EMI-Receivers operating in frequency-domain. By a time-domain EMI measurement system the measurement time can be reduced by several orders of magnitude. In this paper a novel real-time time-domain EMI measurement system that uses a hardware implementation of the Fast Fourier Transform and the detector modes is described. A multiresolution Time-domain EMI System has been developed that processes the EMI Signal by several parallel Analog-to-Digital Converters with an improved dynamic range. The signals are digitized by three 10 bit ADCs which operate at 2.3 GS/s. The obtained EMI signal with a high resolution is further processed in real-time by a decimation filter and a short time fast Fourier transform on the Field Programmable Gate Array. By this way the measurement time can be reduced by a factor of 2000 in comparison to EMI Receivers and Spectrum Analyzers. Due to the real-time implementation auxiliary outputs that are provided by EMI Receivers as well as Spectrum analyzers can also be provided by a Time-domain EMI Measurement System. The two tone intermodulation distortion as well as the measurement accuracy of the Time-domain EMI Measurement System have been experimentally investigated in the frequency range 30 MHz - 1 GHz. The maximum deviation in comparison to an EMI Receiver has been 1.5 dB.
KW - Analogue-digital conversion
KW - Discrete Fourier transforms
KW - Electromagnetic interference
UR - http://www.scopus.com/inward/record.url?scp=41849103490&partnerID=8YFLogxK
U2 - 10.1109/MIKON.2006.4345268
DO - 10.1109/MIKON.2006.4345268
M3 - Conference contribution
AN - SCOPUS:41849103490
SN - 9788390666280
T3 - 16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006
SP - 665
EP - 668
BT - 16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006
PB - IEEE Computer Society
T2 - 16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006
Y2 - 22 May 2006 through 24 May 2006
ER -