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This work is performed to investigate the effects of normal incident electromagnetic wave with arbitrary polarization angle on the electric shielding effectiveness of a rectangular metallic enclosure with aperture by using an analytical method and numerical simulation A formulation depending on the polarization angle is successfully determined using transmission line method (TLM). A single mode normal...
This article mainly deduces the new method of the shielding effectiveness, using transmission lines method to compute power, then we can use power to compute the shielding effectiveness with PCB in it. Because power takes into account the attenuation of electromagnetic fields in the high-frequency, compared to voltage method, we can get that power method calculating shielding effectiveness is accurate...
In most test analysis, we always want to construct a parameter model, and then through sample statistics and model parameters, we can get the properties, or characteristics of what we concern about. Confidence intervals can give an estimate of the range within which the true value of the statistic lies. And a narrow confidence interval indicates the low variability of the statistic, which can give...
Nerve cells under different temperature show various characteristics when they are stimulated and generate action potential, the principal ions involved in the action potential such as sodium and potassium cations also present different possibility to pass through the nerve membrane as well, higher temperature results in a shorter time for this reversible process. The purpose of this study is to find...
An analytical formulation has been developed for shielding effectiveness calculation of rectangular enclosure with an off-center aperture. It deals with more general case including arbitrary located aperture and high frequency incident wave by making use of high-order TEmn mode transmission line model. The incident electromagnetic field impinges on the enclosure with arbitrary incident angle and polarization...
The shielding effectiveness of aperture arrays with different shapes is calculated and analyzed. The influence of the spaces between the adjacent apertures is analyzed. The results show that: when the spaces between the adjacent apertures is larger, the coupling of the adjacent apertures can been neglected , the contours of shielding efficiency of the transmission line method agrees with that of TML...
This article first introduces the improved theory of transmission line method (TLM), which is used to analyze shielding effectiveness of rectangular enclosure with improved aperture model. The calculations show that the contours of TML shielding efficiency is in agreement with the that of FDTD calculation. Then we expand the fundamental formulas to deal with the cases of multi-holes, and arbitrary...
An analytical formula has been developed for shielding effectiveness of rectangular enclosure with off-center aperture. The presented formula has been extended to include high-order modes and loss of enclosure. It is necessary to take modes higher than TE10 into account when aperture locates off-center.
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