Shielding Effectiveness of Rectangular Enclosure with Apertures and Real Receiving Antenna
نویسندگان
چکیده
In this paper, a numerical model of rectangular enclosure with apertures and a real receiving dipole antenna is considered for the purpose of accurate electric shielding effectiveness calculation. Dipole antenna is often used in practice to measure the level of electromagnetic field at some points inside the enclosure in order to estimate its shielding efficiency. Transmission-line matrix (TLM) method enhanced with compact wire model is applied here to generate the numerical model that takes into account the presence of receiving dipole antenna inside the enclosure. Using the proposed model, impact of receiving antenna on electric shielding effectiveness is illustrated on the example of enclosure with three different patterns of rectangular apertures and compared with the case when antenna presence is neglected. A plane wave propagating in a direction normal to the front wall of enclosure is assumed as an external interference signal.
منابع مشابه
Circuital and Numerical Models for Calculation of Shielding Effectiveness of Enclosure with Apertures and Monitoring Dipole Antenna Inside
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 ...
متن کاملA Modified Hybrid MoM-Modal Method for Shielding Effectiveness Evaluation of Rectangular Enclosures with Multiple Apertures
A new hybrid modal-moment method is proposed to calculate fields penetrated through small apertures on rectangular metallic enclosures. First, the method of moments is used to numerically solve the governing electric field integral equation for the equivalent two-dimensional surface-current distributions on the surface of metallic enclosure including any number of rectangular apertures of arbit...
متن کاملTransmission Line Model for Shielding Effectiveness Estimation of a Rectangular Enclosure with Apertures
In this paper, an approach to the shielding effectiveness evaluation of a metallic enclosure with apertures is discussed. It has been previously shown that a simple analytical transmission line formulation gives good predictions of the shielding effectiveness of a metallic enclosure with apertures. In this work the model is extended to include the fundamental formulas to deal with the cases of ...
متن کاملShielding Effectiveness Measurements on Enclosures with Various Apertures by Both Mode-tuned Reverberation Chamber and Gtem Cell Methodologies
The shielding effectiveness (SE) measurements on enclosures with various apertures by both reverberation chamber (RC) and GTEM cell (GC) methodologies are presented. Furthermore, computer simulation through commercial software (CST) is used to compare with the experimental data. Our results show that the SE of the rectangular enclosure with five different apertures from RC is usually larger tha...
متن کاملStudy of the Shielding Effectiveness of Double Rectangular Enclosures with Apertures Excited by an Internal Source
An analytical formulation has been developed to evaluate the shielding effectiveness (SE) of two coplanar rectangular metallic enclosures with a circular aperture excited by an internal electric dipole source. The formulation consists of three parts: First, the near-field electromagnetic interference (EMI) of the electromagnetic leakage from the aperture is represented by the electric dipole in...
متن کامل