Title :
Can a slot act as a band pass aperture?
Author :
Joffe, Elya B. ; Axelrod, Alex
Author_Institution :
KTM Project Eng. Ltd., Kfar-Sava, Israel
Abstract :
The paper discusses the performance of slots in a shielded enclosure, with special emphasis on slots in thick walls. A special “anomaly” is presented, where, in contrast to acceptable shielding theory of dots, provided a lower shielding effectiveness (SE) at lower frequencies that at higher frequencies, while waveguide below cutoff conditions were barely valid. The paper presents the analytical concept of coupling of RF signals through slots, as applicable to the specific problem and presents actual test results from a tactical S280/G shelter, where the effect was identified
Keywords :
electromagnetic coupling; electromagnetic shielding; military equipment; packaging; radiofrequency interference; EMC requirements; RF signals coupling; band pass aperture; command control and communication shelter; shielded enclosure; shielding effectiveness; shielding theory; slot performance; tactical S280/G shelter; test results; thick walls; waveguide below cutoff conditions; Apertures; Electromagnetic interference; Electromagnetic measurements; Electromagnetic shielding; Frequency measurement; Gaskets; Magnetic field measurement; Testing; Transmitting antennas; Welding;
Conference_Titel :
Electromagnetic Compatibility, 2000. IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-5677-2
DOI :
10.1109/ISEMC.2000.874685