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Solve the important reasons for the use of absorbing materials for EMC electromagnetic compatibility

Author:admin   AddTime:2021-04-04

In some electromagnetic compatibility solutions, one is to filter out part of the spectrum that is not needed in the frequency domain, and use inductors, capacitors, resistors, ferrite beads, ferrite beads, etc. in the application; the other is It is to provide a common path for signal electromagnetic noise to reduce electrostatic interference. The application uses wires, conductive glue, metal copper foil tape, conductive cloth and other low-resistance materials; another is to cut off the propagation of electromagnetic interference, isolate the interference source and the interfered device, In the application, materials such as absorbing materials, metal foil, conductive cloth, etc. can be used.

Different from shielding materials, an important reason for using absorbing materials is that in solving high-frequency electromagnetic interference technology, a completely shielded solution may not be able to meet the demand. Because in many devices, port settings, ventilation, windows, etc. make it impossible for the actual shielding method to form a fully shielded electric cage like a Faraday electric cage, port size technology is a major threat to the high frequency of equipment.



Moreover, there is another technology that confuses people. After the equipment is effectively shielded, although the external interference technology is solved, the electromagnetic interference technology still exists in the shielding system, and even the shielding leads to aggravated interference and causes the equipment to fail. normal work. These are all technologies that use shielding methods, and it is precisely because of the existence of these technologies that microwave absorbing materials are useful.

Absorbing material is a type of material that can effectively absorb incident electromagnetic waves and cause them to scatter and attenuate. It converts incident electromagnetic waves into heat or other forms of energy through various loss mechanisms of the material to achieve the purpose of absorbing electromagnetic waves. Unlike the solution using conductive shielding tape, its effectiveness lies in reducing the amount of interference electromagnetic waves. It can be used alone to absorb electromagnetic waves, or it can be combined with a shielding system to improve the high-frequency efficiency of the equipment.

Absorbing Material:https://www.goodsmaterial.com/

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