36032184

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RF and EMI shielding and absorbing materials are used to protect electronic components from the inescapable energy that comes from electromagnetic fields. The three main types are RF shielding materials, EMI absorbing materials, and RF absorbers. The various materials used in these applications have different properties which are determined according to the application and the area where the material is to be used.

RF shielding materials are used to create an effective barrier to stop or reduce radio-frequency energy from penetrating an area or an enclosure. The shielding materials can be made from both conductive and non-conductive materials. Conductive materials are often used to create an electrically conductive barrier while non-conductive materials can also be used as a barrier to reduce the amount of RF energy reaching a component or enclosure.

EMI absorbing materials are used to absorb the energy from electromagnetic fields. These materials are usually constructed from a variety of high conductivity and low permittivity materials and typically come in the form of mesh type structures. These meshes are capable of both absorbing RF energy passing through the material, as well as reflecting it away from an area, reducing the amount of interference that may be experienced.

RF absorbers are made from combinations of absorptive and reflective materials and are designed to absorb radio-frequency energy. This type of material is especially useful in the protection of components that are located close to the source of the RF energy.

36032184 application field and working principle requires an understanding of all three of these materials in order to gain effective protection against electromagnetic interference. The selection of the appropriate material depends on the amount and type of energy being encountered, the application in which it is being used, and the area where the material is to be installed.

RF shielding materials are most effective when applied to the outside of an enclosure in order to create a barrier to keep RF energy from reaching the components and surfaces within the enclosure. These materials can also be used to protect components surrounding the source of interference, such as in a shielded enclosure or cabinet.

EMI absorbing materials are often used in applications such as computer rooms, server rooms, broadcast studios, medical imaging systems, and other areas that generate large amounts of RF energy. These materials can be used to prevent interference from reaching sensitive electronic devices, while also reducing the level of radiation present.

RF absorbers are most valuable when used in open areas or along the walls and ceilings of corridors in order to reduce the level of reflections from an RF source. The absorbers can be used to reduce the effectiveness of strong RF signals or to reduce the effects of weak signals that might be causing interference in the area.

The type of 36032184 application field and working principle that should be chosen depends on the type of energy being encountered, the amount of energy, the application, and the area where the material is to be used. In addition, the materials used can be tailored to create a specific barrier of protection that is tailored to the particular design requirements. If an application requires high performance shielding, EMI absorption, or RF absorption then a combination of these materials can be used to create a comprehensive shielding solution.

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