An innovative shielding concept to reduce radiated emissions from components and tracks on printed-circuit boards is proposed. The new shield is made of a polycarbonate foil, which is coated by a thin film of nickel (only 50 nm in thickness) and by a 5-μm thick layer of tin, and successively thermoformed. The innovative characteristics of such a high-technology shield are the extremely light weight, the high thermoformability, good shielding performance against both far-field and near field sources, low production costs, low installation costs, minimum occupied volume. The mechanical, chemical, and electromagnetic performance of the new shield has been characterized experimentally. Different bonding solutions are tested in order to optimize the shielding performance of the screening cover installed on a conductive ground plane
Electromagnetic performances of innovative lightweight shields to reduce radiated emissions from PCBs / Sarto, Maria Sabrina; DI MICHELE, S.; Leerkamp, P.. - In: IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY. - ISSN 0018-9375. - STAMPA. - 44:2(2002), pp. 353-363.
Electromagnetic performances of innovative lightweight shields to reduce radiated emissions from PCBs
SARTO, Maria Sabrina;
2002
Abstract
An innovative shielding concept to reduce radiated emissions from components and tracks on printed-circuit boards is proposed. The new shield is made of a polycarbonate foil, which is coated by a thin film of nickel (only 50 nm in thickness) and by a 5-μm thick layer of tin, and successively thermoformed. The innovative characteristics of such a high-technology shield are the extremely light weight, the high thermoformability, good shielding performance against both far-field and near field sources, low production costs, low installation costs, minimum occupied volume. The mechanical, chemical, and electromagnetic performance of the new shield has been characterized experimentally. Different bonding solutions are tested in order to optimize the shielding performance of the screening cover installed on a conductive ground planeI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.