46X7501020.NN00

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Shielding and absorbing materials are commonly used in 46X7501020.NN00 applications to prevent Radio frequency interference (RFI) and electromagnetic interference (EMI). RFI and EMI can interfere with the operation of radio and electronic equipment, causing the performance of the parts, circuits, and systems to be degraded or even rendered completely unusable. The primary goal of shielding and absorbing materials is to attenuate RFI and EMI and preserve the performance of these elements.

Shielding materials (also known as Faraday cages or shields) provide both electrical and magnetic shielding, which creates an electrical barrier which is impermeable to outside signals. The shield works by providing an electrically conductive outer surface which absorbs the incoming energy, reflecting it away from the user. This attenuates the interference, allowing only a small amount of the energy to reach the user. Shielding materials usually come in the form of metallic sheeting, mesh or foam, and are commonly used in both commercial and industrial environments with electronic equipment.

Absorbing materials, on the other hand, are designed to attenuate RFI and EMI energy by converting it to thermal energy. These materials can come in the form of fabric, foam or mats, and are usually placed directly on or around electronic equipment. The material absorbs the energy, preventing it from reaching the user or interfering with the operation of the equipment. Absorbing materials are often used in aircraft and vehicles, where it is important to protect the operator from high levels of RFI and EMI generated from a multitude of sources.

Shielding and absorbing materials can be used in conjunction with one another to provide maximum protection against RFI and EMI. For instance, a Faraday shield can be used to shield the equipment from outside interference, while absorbing materials can be used to protect the user and preserve the performance of the equipment. This two-pronged approach ensures that the equipment is protected from outside interference, while the user is protected from hazardous radiation.

Using shielding and absorbing materials is a highly effective and cost-efficient way to protect radio and electronic equipment from interference caused by RFI and EMI. They provide a barrier against external signals, while also preventing the user from being exposed to potentially hazardous radiation. When used in combination with other shielding measures, such as copper foil tape, they provide an added layer of protection which ensures the equipment is able to perform at peak efficiency. As a result, they are an essential part of the RF/EMI engineering process.

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