TY - GEN
T1 - A broadband, low-noise time-domain system for EMI measurements through Ka-band up to 40 GHz
AU - Hoffmann, Christian
AU - Sidhom, Ayoub
AU - Braun, Stephan
AU - Russer, Peter
PY - 2012
Y1 - 2012
N2 - In this paper, a time-domain EMI measurement system for the frequency range from 10 Hz to 40 GHz is presented. Signals with a frequency of up to 1.1 GHz are sampled by an ultra-fast floating-point analog-to-digital-converter (ADC) and processed in real-time on a field-programmable-gate-array (FPGA). An ultra-broadband multi-stage down-converter allows for the measurement of signals with frequencies up to 40 GHz. Measurement times can be reduced by several orders of magnitude compared to traditional EMI-receivers that work in frequency-domain. With preselected integrated low-noise amplifiers, the system offers high sensitivity especially in the Ka-band from 26.5 GHz to 40 GHz. The low system noise figure from 26.5 GHz to 40 GHz yields an average noise floor level of around 12 dBμV using an IF-filter bandwidth of 1 MHz in this range. With a high system dynamic range of more than 70 dB, the system is excellently suited for the measurement of broadband, transient emissions or high-dynamic signals like radar pulses. Non-stationary emissions can be measured via the real-time spectrogram or via the multi-channel amplitude probability distribution (APD) measuring method.
AB - In this paper, a time-domain EMI measurement system for the frequency range from 10 Hz to 40 GHz is presented. Signals with a frequency of up to 1.1 GHz are sampled by an ultra-fast floating-point analog-to-digital-converter (ADC) and processed in real-time on a field-programmable-gate-array (FPGA). An ultra-broadband multi-stage down-converter allows for the measurement of signals with frequencies up to 40 GHz. Measurement times can be reduced by several orders of magnitude compared to traditional EMI-receivers that work in frequency-domain. With preselected integrated low-noise amplifiers, the system offers high sensitivity especially in the Ka-band from 26.5 GHz to 40 GHz. The low system noise figure from 26.5 GHz to 40 GHz yields an average noise floor level of around 12 dBμV using an IF-filter bandwidth of 1 MHz in this range. With a high system dynamic range of more than 70 dB, the system is excellently suited for the measurement of broadband, transient emissions or high-dynamic signals like radar pulses. Non-stationary emissions can be measured via the real-time spectrogram or via the multi-channel amplitude probability distribution (APD) measuring method.
UR - http://www.scopus.com/inward/record.url?scp=84870715691&partnerID=8YFLogxK
U2 - 10.1109/ISEMC.2012.6351686
DO - 10.1109/ISEMC.2012.6351686
M3 - Conference contribution
AN - SCOPUS:84870715691
SN - 9781467320610
T3 - IEEE International Symposium on Electromagnetic Compatibility
SP - 468
EP - 472
BT - EMC 2012 - 2012 IEEE International Symposium on Electromagnetic Compatibility, Final Program
T2 - 2012 IEEE International Symposium on Electromagnetic Compatibility, EMC 2012
Y2 - 5 August 2012 through 10 August 2012
ER -