Improve Shielding Effectiveness with Suitable Designing Apertures for Air Conditions in Antenna and EMC Laboratory.

This paper presents the electromagnetic interference shielding impact due to air vent holes on electronic systems chassis .In designing and building EMC labs one of the important factors is S.E (shielding effectiveness), if this parameter improves shielding performance of enclosure will be better and leakage of energy will reduce. If the vent hole size become larger much more air can come to the room and electronic instruments become cooler, button the other hand with growing of the size of the vent holes, shielding effectiveness will be lower and unwanted signals will come to the room easier and this signals can disturb our systems and damage result of our tests. So the main purpose of this paper is presenting a way to improve shielding performance of air vents.[1]