Estimation of Electric and Magnetic Shielding Effectiveness of a Metallic Enclosure with Apertures

Author

Farhana Ahmad Po´ad ; Mohd Zarar Mohd Jenu ; Christopoulos, C. ; Thomas, D.W.P.

Author_Institution

Center for Electromagn. Compatibility, Kolej Univ. Teknologi Tun Hussein Onn, Johor

fYear

2006

fDate

12-14 Sept. 2006

Firstpage

291

Lastpage

295

Abstract

This work is performed to investigate the effects of apertures on the electric and magnetic shielding effectiveness of a rectangular metallic enclosure with apertures by using an analytical formulation and experimental study. Both electric and magnetic shielding effectiveness were calculated as a function of frequency, enclosure dimensions, aperture dimensions, position within the enclosure and various aperture positions by employing a transmission line equivalent circuit approach. Different aspects are investigated such as the influence of size, position, shape and number of apertures in the calculation of shielding effectiveness. Generally, the analytical results compare well with the measurements results for electric and magnetic shielding effectiveness which were conducted in a gigahertz transverse electromagnetic (GTEM) cell for frequencies in the range 10 MHz to 1 GHz

Keywords

electromagnetic shielding; equivalent circuits; integrated circuit modelling; transmission line theory; transmission lines; 0.01 to 1 GHz; apertures; circuit modeling; electric shielding; electromagnetic shielding; gigahertz transverse electromagnetic cell; magnetic shielding; rectangular metallic enclosure; shielded enclosure; shielding effectiveness; transmission line equivalent circuit; Apertures; Distributed parameter circuits; Electromagnetic analysis; Equivalent circuits; Frequency; Magnetic analysis; Magnetic shielding; Performance analysis; Shape; Transmission line measurements; Apertures; circuit modeling; electromagnetic shielding; shielded enclosure; shielding effectiveness;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference, 2006. RFM 2006. International

Conference_Location

Putra Jaya

Print_ISBN

0-7803-9745-2

Electronic_ISBN

0-7803-9745-2

Type

conf

DOI

10.1109/RFM.2006.331088

Filename

4133603