Maximum Working Volume and Minimum Working Frequency Tradeoff in a Reverberation Chamber

Mode stirred reverberation chambers are attractive as test facilities because the electric fields produced in them are statistically uniform over a large volume. The field strengths generated can also be high for only a modest input power. These factors allow testing of representative or actual equi...

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Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 2007-08, Vol.49 (3), p.719-722
Main Authors: Coates, A., Duffy, A.P.
Format: Article
Language:English
Subjects:
Applied classical electromagnetism
Applied sciences
Blades
Confidence intervals
Density
Electric fields
Electromagnetic compatibility
Electromagnetic wave propagation, radiowave propagation
Electromagnetics
Electromagnetism
electron and ion optics
Estimating
Exact sciences and technology
Field strength
Fundamental areas of phenomenology (including applications)
Information, signal and communications theory
Mathematical analysis
Numerical modeling
optimization
Physics
Reverberation
Reverberation chambers
Solid modeling
Studies
Telecommunications and information theory
transmission line matrix (TLM)
Transmission line matrix methods
Volume measurement
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Summary:Mode stirred reverberation chambers are attractive as test facilities because the electric fields produced in them are statistically uniform over a large volume. The field strengths generated can also be high for only a modest input power. These factors allow testing of representative or actual equipment without the need to rotate the equipment or scan with antennae to obtain worst case illumination. Providing these optimum test conditions for a given system configuration will allow the results to be interpreted with confidence. Usually standard guidelines for mode stirred chamber operation involve estimating the minimum working frequency based on a mode density calculation or using measurements to calculate the field uniformity of a given working volume. This paper uses the transmission line matrix technique to investigate the relationship between the minimum working frequency (i.e., the lowest usable frequency) and the maximum working volume. The paper presents a straightforward test to determine this tradeoff and illustrates the exploitation in the analysis of stirrer design options.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2007.902199