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Technical Glossary Methods of Electromagnetic Shielding

[Methods of Electromagnetic Shielding]

Along with the Digital Revolution came the problem of malfunctioning electronic equipment caused by electromagnetic noise (unnecessary electromagnetic waves) and other electromagnetic interference.
There are two ways to protect electronics from electromagnetic interference: reflection and absorption. Shielding electronics with highly conductive metal is the most popular method.
However, reflected electromagnetic waves might adversely affect other equipment, or, if the reflected electromagnetic waves are not allowed to escape the device, they may be reflected back into device, which could adversely affect the electronics within.
Therefore, considering the negative influence of reflected waves on other equipment or the devices themselves, it is more advisable to absorb electromagnetic waves rather than to reflect them.

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