Guide to Shielding Technologies

New technologies in electromagnetic interference (EMI) and radio-frequency interference (RFI) shielding are constantly being developed and refined in the quest to help manufacturers comply with regulatory requirements. This is especially true in the portable wireless device category, in which the ever-increasing operating frequency and shrinking form factor have challenged older shielding technologies. Modern shielding products are available in a staggering array of material composition, contact interface, construction, size, and mounting options to help electronics manufacturers solve critical design issues. "Vacuum-Metalized Shielding" offers a look at a patented technology that can replace conductive paint and board-level metal cans. "Mechanical Design Guidelines" provides a look at how the mechanical structure can affect gasket compression and therefore shielding effectiveness. "Multigigahertz Shielding Gaskets" presents a dual-elastomer technology with a conductive silver membrane for use in very-high-frequency applications.