DocumentCode :
3603458
Title :
Removing the Spectral Leakage in Time-Domain Based Near-Field Scanning Measurements
Author :
Claeys, Tim ; Vanoost, Dries ; Peuteman, Joan ; Vandenbosch, Guy A. E. ; Pissoort, Davy
Author_Institution :
ReMI Res. Group, KU Leuven Technol., Ostend, Belgium
Volume :
57
Issue :
6
fYear :
2015
Firstpage :
1329
Lastpage :
1337
Abstract :
This paper describes the application of a new and easy to implement algorithm to EMI near-field scanning measurement results obtained with a time-domain-based measurement system. The algorithm aims to reduce the effect of spectral leakage on amplitude and phase of the measured field components. The proposed algorithm significantly increases the accuracy of the measured electromagnetic near field with a limited extra computational cost. The versatility and effectiveness of the proposed algorithm is shown on both simulated and measured data. It is shown that for situations with one single frequency component or with several well-separated frequency components, the algorithm is as performant as the application of a flat top window and outperforms other types of windows. However, as soon as the frequency components approach each other implying their spectral leakage patterns overlap, the proposed algorithm outperforms the application of a flat top window.
Keywords :
electric noise measurement; electromagnetic interference; time-domain analysis; EMI near-field scanning measurement; electromagnetic near field; flat top window; spectral leakage; time-domain analysis; Discrete Fourier transforms; Electromagnetic interference; Phase measurement; Probes; Time measurement; Time-frequency analysis; Discrete Fourier transform (DFT) and leakage effect; frequency domain; near-field scanning; phase estimation; spectral leakage;
fLanguage :
English
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9375
Type :
jour
DOI :
10.1109/TEMC.2015.2447051
Filename :
7145408
Link To Document :
بازگشت