NDLI: Time-domain low-frequency non-periodic transient EMI measurement system

Content Provider	IET Digital Library
Author	Meng, Jin Zhang, Xiangming Zhang, Lei Zhao, Zhihua
Abstract	In this study, a time-domain low-frequency non-periodic transient electromagnetic interference (EMI) measurement system is presented. By the use of an antenna, an anti-aliasing filter, and a digital oscilloscope, the radiated emissions measurement specified by electromagnetic compatibility standard MIL-STD-461 is achieved. In the first stage, the antenna receives the radiated emissions of the device under test and the time domain output voltage is acquired in the oscilloscope. Then, to fulfil the spectrum measurement as accurate as an EMI receiver, a spectrum calculating methodology is carried out. Optimised inverse fast Fourier transform procedure for spectrum estimation in the proposed methodology is implemented to reduce the calculation efforts. The proposed EMI measurement technique required only a single time-domain acquisition and no repeatedly continuous scanning was imposed on the frequency measurement of the EMI test receivers. Due to this benefit, scan times are decreased by several orders of magnitude in comparison with a traditional EMI receiver.
Starting Page	650
Ending Page	655
Page Count	6
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 5, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5430
Journal	IET Science, Measurement & Technology
Publisher Date	2019-02-13
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Anti-aliasing Filter Device under Test Digital Oscilloscope Digital Storage Oscilloscopes Display, Recording And Indicating Instruments Electromagnetic Compatibility Electromagnetic Compatibility Standard MIL-STD-461 Electromagnetic Interference EMI Measurement Technique EMI Test Receiver Fast Fourier Transform Filter Filter And Other Network Frequency Measurement Integral Transforms Interference Inverse Transforms Optimised Inverse Fast Fourier Transform Procedure Radiated Emission Measurement Scan Times Single Antenna Single Time-domain Acquisition Spectrum Calculating Methodology Spectrum Estimation Spectrum Measurement Time Domain Output Voltage Time-domain Low-frequency Nonperiodic Transient Electromagnetic Interference Measurement System Time-domain Low-frequency Nonperiodic Transient EMI Measurement System Time-frequency Analysis
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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