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RFID (Radio Frequency Identification) and EMI (Electromagnetic Interference) shielding and absorbing materials are a type of material which helps to prevent or reduce the levels of electromagnetic radiation. By using these materials, electrical and electronic equipment can be sufficiently protected from the harmful effects of EMI. This type of shielding and absorbing material can also be used to reduce the level of noise from communication systems. In this application field, Electromagnetic Compatibility (EMC) tests are also carried out to ensure that the levels of radiation are maintained at acceptable levels.

The most common type of shielding and absorbing material is metalized fabric. This fabric is used in applications such as microwave ovens, radar systems, and communication systems. It is also used for industrial and military applications. Metalized fabric absorbs the electromagnetic radiation by providing a reflective surface. In addition to this, the metalized fabric also provides a high degree of mechanical strength.

In order to further reduce levels of EMI, other types of materials can be used. These materials include carbon-loaded silicone, RF absorbers, dissipative materials and conductive foams. Carbon-loaded silicone is used for shielding light-weight equipment, while RF absorbers are used for shielding more robust equipment. The dissipative materials are used to reduce the transmission of the radiation, while the conductive foams are used to provide the necessary insulation.

Apart from these materials, the use of surface mount components is also increasingly important in this application field. The use of surface mount components helps to reduce the level of radiation that is emitted from the equipment. This is because the components are made of a conductive material. In addition, the components are small and can be easily installed and maintained.

In addition to shielding and absorbing materials, EMC tests are also carried out to ensure that levels of radiation are maintained at acceptable levels. For this purpose, there are a number of tests which are conducted, including radiated immunity, line/cable emissions, conducted emissions and field measurements. The tests measure the amount of radiation that is generated by the equipment and ensures that the levels are kept within safe limits.

The use of RFID and EMI shielding and absorbing materials is an important part of the electronic equipment development cycle. By properly using these materials, the levels of radiation emitted by the equipment can be kept within acceptable levels. This helps to ensure that the equipment is safe for users and also helps to extend the life-span of the equipment.

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