TY - JOUR
T1 - Frequency Domain Method for Scattering Damping Time Extraction of a Reverberation Chamber Based on Autocorrelation Functions
AU - Jia, Tianyuan
AU - Huang, Yi
AU - Xu, Qian
AU - Tian, Zhihao
AU - Jiang, Jingyuan
AU - Hua, Qiang
N1 - Publisher Copyright:
© 1964-2012 IEEE.
PY - 2020/12/14
Y1 - 2020/12/14
N2 - The scattering damping time (τ s) of a reverberation chamber is a very important parameter but hard to obtain accurately. A novel method for extracting this parameter is presented in this article. By utilizing the frequency domain autocorrelation function and the unstirred frequency domain autocorrelation function, τ s can be directly calculated from measured S-parameters without the need of performing the inverse Fourier transform (IFT). Mathematical derivation is given based on the Wiener-Khinchin theorem, and experimental measurements are conducted for different frequency bands as well as different stirrer configurations to verify the proposed approach. Compared with the conventional IFT-based method, the proposed method does not involve the procedure of manually selecting the fitting range, while still maintains advantages in terms of the independence of the radiation efficiency and input impedance of the measurement antennas.
AB - The scattering damping time (τ s) of a reverberation chamber is a very important parameter but hard to obtain accurately. A novel method for extracting this parameter is presented in this article. By utilizing the frequency domain autocorrelation function and the unstirred frequency domain autocorrelation function, τ s can be directly calculated from measured S-parameters without the need of performing the inverse Fourier transform (IFT). Mathematical derivation is given based on the Wiener-Khinchin theorem, and experimental measurements are conducted for different frequency bands as well as different stirrer configurations to verify the proposed approach. Compared with the conventional IFT-based method, the proposed method does not involve the procedure of manually selecting the fitting range, while still maintains advantages in terms of the independence of the radiation efficiency and input impedance of the measurement antennas.
KW - Autocorrelation function (ACF)
KW - reverberation chamber (RC)
KW - scattering damping time(τ s)
KW - stirrer efficiency
KW - total scattering cross section (TSCS)
KW - Wiener-Khinchin theorem
UR - http://www.scopus.com/inward/record.url?scp=85097982613&partnerID=8YFLogxK
U2 - 10.1109/TEMC.2020.2979014
DO - 10.1109/TEMC.2020.2979014
M3 - Article
AN - SCOPUS:85097982613
VL - 62
SP - 2349
EP - 2357
JO - IEEE Transactions on Electromagnetic Compatibility
JF - IEEE Transactions on Electromagnetic Compatibility
SN - 0018-9375
IS - 6
M1 - 9078873
ER -