Communication products adopt EMI dispensing processing to solve electromagnetic shielding

Communication products adopt EMI dispensing processing to solve electromagnetic shielding

Communication products electronic components to outside interference, called EMI (ElectromagneticInterference); Electromagnetic wave can and electronic components, produce interference phenomenon, called EM (ElectromagneticSusceptibility). For example, a common "snowflake" on a TV screen is a signal interference received. Such problems can be solved by EMI dispensing of communication structural parts.

Because the product shield plays a role in absorbing energy (eddy current loss), reflecting energy (the interface reflection of electromagnetic wave on the shield) and cancelling energy (electromagnetic induction generates reverse electromagnetic field on the shield layer, which can cancel part of the interference electromagnetic wave) for external and internal electromagnetic wave from wires, cables, components, circuits or systems. So when the structural parts using EMI dispensing processing, the shielding body has the function of weakening interference.

When the product structure adopts FIP dispensing processing, the product forms a shielding body, shielding is the metal isolation between the two space areas, in order to control the induction and radiation of electric field, magnetic field and electromagnetic wave from one area to another area. Specifically, it is to surround the interference source of the component, circuit, assembly, cable or the whole system with a shielding body to prevent the interference electromagnetic field from spreading out; The receiving circuit, equipment or system is surrounded by a shielding body to prevent them from being affected by external electromagnetic fields, so that the product structure plays a protective role.