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A model for the number of independent samples in reverberation chambers
Author(s) -
Hallbjörner Paul
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10220
Subject(s) - uncorrelated , electromagnetic reverberation chamber , reverberation , microwave , acoustics , antenna (radio) , power (physics) , reverberation room , mathematics , engineering , electronic engineering , statistics , physics , electrical engineering , telecommunications , quantum mechanics
Antenna efficiency measurements in reverberation chambers are done by averaging a number of sampled power levels, measured while the mode stirrer rotates. The number of independent samples is the number of stirrer positions that give uncorrelated fields in the chamber, and thereby uncorrelated power levels. A larger number of samples gives a better accuracy of the measured value. This report presents a proposed theoretical model for the number of independent samples of a reverberation chamber, thereby giving a better understanding of how to optimize a chamber design. Measured data from chambers with three different types of stirrers are compared with the use of the model. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 25–28, 2002; DOI 10.1022/mop.10220