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Shield Effect Of Functional Interlining Fabric

Šaravanja B., Malarić K., Pušić T., Ujević D.

Autex Research Journal

2015

Vol. 15, no. 2

93--98

Electromagnetic interference (EMI) have become very serious in a variety of different electronic equipments, such as personal computers (frequency at several GHz), mobile devices (0.9 – 2.4 GHz) and similar. This imposes the need for setting boundaries for EM emission of electric and electronic devices in order to minimize the possibility of interference with radio and wireless communications. Functional textiles can offer protective properties against EM radiation. The aim of this study is to investigate the degree of protection against EM radiation provided by polyamide copper-coated interlining fabric before and after dry cleaning treatment. EM protection efficiency of the interlining functional fabric is explored on both sides at the frequencies of 0.9; 1.8; 2.1 and 2.4 GHz. The results obtained have shown that the interlining fabric has good protective properties against EM radiation, but after dry cleaning, treatment reduction is observed. Scanning electron microscopy micrographs of the interlining surface confirms shield effect decline due to degradation and firing of the copper layers during the process of dry cleaning.

Electromagnetic compatibility (EMC) concerns for distributed generation technologies

Keebler Ph., Phipps K., Howe B.

Electrical Power Quality and Utilisation. Magazine

2005

Vol. 1, nr 2

37-45

Significant energy performance and power quality testing has been conducted on distributed resource (DR) technologies to determine energy efficiency and susceptibility and immunity to power line disturbances. However, comparatively little electromagnetic compatibility (EMC) testing has been conducted to address radiated and conducted emissions and immunity performance. DR technologies contain significant power electronic devices for the purposes of DR control and energy conversion. Such devices generate both radiated and conducted emissions into nearby environments where DR technologies may be installed, and are themselves susceptible to such emissions from the outside environment. This article will address the various types of emissions that various DR technologies can generate, and examine ways to reduce the levels of these emissions and enhance EMC immunity levels associated with DR technologies.