Title :
An Improved Vector Fitting Method for Parametric Identification of Transfer Functions in EMC Measurement
Author :
Zhang, Li ; Wang, Wei ; Li, Qingmin ; Siew, W.H.
Author_Institution :
Shandong Univ., Jinan
Abstract :
Due to the non-flat amplitude-frequency characteristics of antennas used in EMC measurement, measuring results can not accurately present the real levels of radiations. So, transfer functions for frequency-domain compensation of antennas, should be adopted to rectify the radiations levels. Vector fitting is a popular iterative rational approximation technique for transfer function in the frequency domain. In this paper, an improved methodology is introduced, which improves the calculation accuracy and reduces the influence of condition number.
Keywords :
approximation theory; electromagnetic compatibility; parameter estimation; transfer functions; vectors; EMC measurement; iterative rational approximation; nonflat amplitude-frequency antenna characteristic; transfer functions parametric identification; vector fitting method; Antenna measurements; Distortion measurement; Electromagnetic compatibility; Electromagnetic fields; Electromagnetic measurements; Equations; Frequency domain analysis; Frequency response; Power system measurements; Transfer functions;
Conference_Titel :
Electromagnetic Compatibility, 2007. EMC 2007. International Symposium on
Conference_Location :
Qingdao
Print_ISBN :
978-1-4244-1371-3
Electronic_ISBN :
978-1-4244-1372-0
DOI :
10.1109/ELMAGC.2007.4413459
