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The dependence of the quality factor (Q) of a reverberation chamber as measured using a time-domain approach on the total bandwidth included in the time-domain signal has been investigated. Time-domain measurement of the Q factor of a mechanically stirred, metal cavity has been been performed using synthesized pulses of different bandwidth with the cavity both loaded and unloaded by absorbing material...
The use of Feature Selective Validation (FSV) in validating the current induced on a wire inside a highly resonant cavity environment by an incident plane wave in the frequency range from 300 MHz to 8.5 GHz is examined. FSV gives fair agreement between measured and simulated results. A visual comparison of the responses suggests that the agreement is better than fair. When comparing the results of...
Electromagnetic interference can hinder the operations of systems near the source of the interference. This paper details the process of using a nested reverberation setup in order to determine the absorptive effectiveness of several absorbing materials. Results show that the position of absorbing materials is inconsequential as long as they are placed outside of the working volume and away from wall...
A cavity Green's function moment method has been implemented using the recently introduced spectral domain factorization that dramatically reduces the cost of treating electromagnetically large chambers. The mixed potential form of the EFIE is implemented here, avoiding the strong singularities in the electric-field Green's function formulation of the original implementation. The method is used to...
This study investigates the measurement of current on a wire located inside a cavity with an aperture as a function of excitation frequency with the use of a simple S parameter model. Validation is provided by comparing simulations and measurements. Using this approach, it will be possible to make an accurate prediction of the current distribution on the wire, and thereby to describe potential interference...
Two recently introduced methods for selecting the Ewald splitting parameter used in the evaluation of the rectangular cavity Greens's function have been tested for electro-magnetically large, lossy cavities. The input impedance of dipole radiators placed in large, lossy cavities were found using the cavity Green's function moment method. Cavities with dimensions up to 132 wavelengths have been modeled...
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