Conference Proceeding

Angular plane wave spectrum analysis of TM modes in a 2D reverberation chamber using a Root-Music based method

Université Paris-Est Marne-la-Vallée, Laboratoire ESYCOM, Bât. Copernic, 5 bd Descartes, 77454 Marne-la-Vallée cedex 2, France
05/2010; pp.1 - 5 In proceeding of: Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Source: IEEE Xplore

ABSTRACT In order to determine a plane wave representation of the electric field within a reverberation chamber (RC), a complete high resolution method based on Root-MUSIC algorithm is developed. Decorrelation procedures are applied to the correlation matrix to adapt this method to the RC case, where plane waves are highly correlated. This technique leads to a correct estimation of the number, directions-of-incidence (DOA), amplitudes and phases of all planes waves. Using electric field cartographies issued from FDTD simulations, accurate results are obtained in the case of an RC with a fixed stirrer. By moving the stirrer we demonstrate that whereas DOA are slightly affected by the stirrer rotation, the plane wave powers are strongly sensitive to the stirrer position at low frequency.

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Keywords

accurate results
 
adapt
 
amplitudes
 
correct estimation
 
correlation matrix
 
Decorrelation procedures
 
directions-of-incidence
 
electric field
 
electric field cartographies
 
low frequency
 
plane wave powers
 
plane wave representation
 
plane waves
 
planes waves
 
RC
 
RC case
 
Root-MUSIC algorithm
 
stirrer rotation