Application of inventive problem solving (TRIZ) method in design of electromagnetic shielding enclosure

Electromagnetic shielding targets to improve electromagnetic compatibility performance of electronic devices and systems. Metallic enclosures are the most common electromagnetic shielding apparatus thanks to their good electrical conductivity and wall thickness. Shielding effectiveness (SE) is a measure of performance of the shielding enclosure. Slots or apertures located on the walls of the enclosure for various reasons have negative impact on SE since they allow electromagnetic interference leakage onto electronic circuits. This study proposes technical solutions which aim to improve SE in design of the electromagnetic shielding enclosure by applying inventive problem solving (TRIZ) method. Three engineering contradictions are generated and linked with the system parameters of TRIZ which are used as indicators within the contradiction matrix to obtain relevant inventive principles for creating technical solutions. In this context, analysis of SE based on each technical solution is performed and comparison studies are presented based on their impact on SE.