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.
CelozziSAraneoRLovatG. Electromagnetic shielding. New Jersey: John Wiley & Sons Inc., 2008.
2.
GülerS. Analysing the shielding effectiveness of rectangular enclosure by determining aperture dimensions with particle swarm optimization. J Electr Eng2022; 73: 182–189.
3.
ChenKGaoMZhouX. A model for the prediction of the shielding effectiveness of cylindrical enclosure. AIP Adv2022; 12. DOI: https://doi.org/10.1088/1361-6501/ac8366
4.
GongYJiangLLiY. Efficient method for the shielding effectiveness of an enclosure with electrically large apertures based on the Cohn model and mirror procedure. IET Science, Measurement & Technology2020; 14: 932–939.
5.
GongYFHaoJHJiangLH. Efficient analytical method for the coupling to penetrated transmission line in multiple enclosures based on electromagnetic topology. IET Sci Meas Technol2018; 12: 335–342.
6.
YinMDuP. An improved circuit model for the prediction of the shielding effectiveness and resonances of an enclosure with apertures. IEEE Trans Electromagn Compat2016; 58: 448–456.
7.
RobinsonMP, Benson TM, Christopoulos C, et al.Analytical formulation for the shielding effectiveness of enclosures with apertures. IEEE Trans Electromagn Compat1988; 40: 240–248.
8.
GongYLiYJiangL. Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation. IET Sci Meas Technol2020; 14: 897–904.
9.
KwonJHHyoungCHHwangJH, et al.Impact of absorbers on the shielding effectiveness of metallic rooms with apertures. Electronics (Basel)2021; 10. DOI: https://doi.org/10.3390/electronics10030237
10.
IlgarTMBulutMSakaB. Shielding effectiveness for metallic enclosures with various aperture shapes. In: URSI Atlantic radio science conference (URSI AT-RASC), Gran Canaria, Spain, 2015. DOI: https://doi.org/10.1109/URSI-AT-RASC.2015.7303047
11.
NieBLDuPAXiaoP. An improved circuital method for the prediction of shielding effectiveness of an enclosure with apertures excited by a plane wave. IEEE Trans Electromagn Compat2018; 60: 1376–1383.
12.
RenDDuPAHeY, et al.A fast calculation approach for the shielding effectiveness of an enclosure with numerous small apertures. IEEE Trans Electromagn Compat2016; 58: 1033–1041.
13.
NouainiaAMejriFAguiliT. Analysis and optimization of electromagnetic leaks using genetic algorithms. J Electromagn Waves Appl2022; 36: 2519–2535.
14.
BasyigitIBDoganH. The analytical and artificial intelligence methods to investigate the effects of aperture dimension ratio on electrical shielding effectiveness. Int J Electron Telecommun2019; 65: 359–365.
15.
CléricoP, Pichon L, Mininger X, et al.Assessment of broadband shielding effectiveness of composite panels for protective enclosures. IEEE Trans Electromagn Compat2022; 64: 1750–1757.
16.
BahadorzadehMMoghaddasiMN. Improving the shielding effectiveness of a rectangular metallic enclosure with aperture by using extra shielding wall. In: 12th international symposium on antenna technology and applied electromagnetics and Canadian radio sciences conference, Montreal, Canada, 2006.
17.
AkiyamaTSasakiMShinagawaM, et al.Shielding effectiveness of multi-layered Cu and PET thin films from electromagnetic interference. In: International instrumentation and measurement technology conference, Taipei, Taiwan, 2016. DOI: https://doi.org/10.1109/I2MTC.2016.7520499
18.
GongYChenX. An analytical model for predicting the shielding effectiveness and resonances of a lossy enclosure with apertures. J Electromagn Waves Appl2022; 36: 488–504.
19.
LiuEDuPNieB. An extended analytical formulation for fast prediction of shielding effectiveness of an enclosure at different observation points with an off-axis aperture. IEEE Trans Electromagn Compat2014; 56: 589–598.
20.
BasyigitIBDoganHHelhelS. The effect of aperture shape, angle of incidence and polarization on shielding effectiveness of metallic enclosures. J Microw Power Electromagn Energy2019; 53: 115–127.
21.
HusseinKFA. Spatial filter housing for enhancement of the shielding effectiveness of perforated enclosures with lossy internal coating: broadband characterization. Int J Antennas Propag2013: 353647. DOI: https://doi.org/10.1155/2013/353647
22.
YaoKCLiKYXuJR, et al.Application of TRIZ innovative system method in rapid assembly of folding chairs. Sustainability2022; 14: 1–40.
23.
AkayDDemirayAKurtM. The parameters which have negative impact on one another creates contradiction. Collaborative tool for solving human factors problems in the manufacturing environment: the theory of inventive problem solving technique (TRIZ) method. Int J Prod Res2008; 46: 2913–2925.
24.
NgPK, Prasetio MD, Liew KW, et al.A TRIZ-inspired conceptual development of a roof tile transportation and inspection system. Buildings2022; 12: 1456.
25.
MoussaFZBDuboisIRSDe GuioR, et al.Reviewing the use of the theory of inventive problem solving (TRIZ) in green supply chain problems. J Cleaner Prod2017; 142: 2677–2692.
26.
JeeradistTThawesaengskulthaiNSangsuwanT. Using TRIZ to enhance passengers’ perceptions of an airline's image through service quality and safety. J Air Transp Manag2016; 53: 131–139.
LuXYangyangL. The development of a new type of winder. In: 3rd international conference on energy resources and sustainable development (ICERSD), web of conferences, 2021. DOI: https://doi.org/10.1051/e3sconf/202123602022
30.
YamashinaHItoTKawadaH. Innovative product development process by integrating QFD and TRIZ. Int J Prod Res2002; 40: 1031–1040.
31.
PingpingLKongleiZ. Design of structure and control system of intelligent parking equipment based on triz and cloud platform. J Phys: Conf Ser2021: 1750. DOI: https://doi.org/10.1088/1742-6596/1750/1/012020
StrattonRMannD. Systematic innovation and the underlying principles behind TRIZ and TOC. J Mater Process Technol2003; 139: 120–126.
34.
KhodadadiAvon BuelowP. Design exploration by using a genetic algorithm and the theory of inventive problem solving (TRIZ). Autom Constr2022; 141: 104354.
35.
MansoorMMariunNAbdulWahabNI. Innovating problem solving for sustainable green roofs: potential usage of TRIZ – theory of inventive problem solving. Ecol Eng2017; 99: 209–221.
ChenJGuoJTianC. Analyzing the shielding effectiveness of a graphene-coated shielding sheet by using the HIE-FDTD method. IEEE Trans Electromagn Compat2018; 60: 362–367.feasibility (Periodical style)”, IEEE Trans Electron Devices, vol. ED-11, pp. 34–39, 1959. DOI: 10.4316/ieee.1959.3422.
