Erecting shield wires is one of the effective measures to improve power frequency electric field environment around high voltage transmission line, which can reduce the impact of power frequency electric field to surroundings and human activity. There is an unknown multidimensional non-linear relationship among the quantity of shield wires, the suspended positions and shielding effectiveness. T...

Today with the rapid growth of telecommunications equipment, electronic and developing more and more networks of power, influence of electromagnetic waves on one another has become hot topic discussions. So in this article, this issue and appropriate mechanisms for EMC operations have been presented. First, a source of alternating current (50 Hz) and a clear victim in a certain distance from th...

In this paper, circuital and numerical models of metal enclosure with apertures are considered for the purpose of accurate shielding effectiveness calculation. An improved circuital model is presented to account for the presence of receiving dipole antenna which is often used in practice to measure the level of electromagnetic field at selected points inside the enclosure. Receiving antenna of ...

This study investigated the enhancement characteristics of shielding effectiveness (SE) a double-layer structure with narrow slots when plane wave is incident on slot. Integral equations for aperture magnetic currents in were derived and solved by applying Galerkin’s method moments. The numerical results demonstrate that SE depends layer wall spacing given frequency. fluctuates layers, fluctuat...

Today with the rapid growth of telecommunications equipment, electronic and developing more and more networks of power, influence of electromagnetic waves on one another has become hot topic discussions. So in this article, this issue and appropriate mechanisms for EMC operations have been presented. First, impact of high voltage lines on the surrounding environment especially on the control ro...

We investigate the shielding effectiveness and complex conductivity of single-walled carbon nanotubes (SWNT) distributed in a polyvinyl alcohol (PVA) matrix in the THz frequency range. SWNTs are dispersed in PVA matrices with varying SWNT content (keeping the thickness of SWNT/PVA film constant) using a slow-drying method, and terahertz time-domain spectroscopy (THz-TDS) is performed at room te...