Technical Glossary Selecting the Best Material for Electromagnetic Shielding

[Selecting the Best Material for Electromagnetic Shielding]

1. Shielding from external electromagnetic waves Electromagnetic waves can spread into a wide range of frequencies, so protective materials which can reflect or absorb frequencies near the center of the frequency band are selected.
2. Protecting the external environment from electromagnetic waves generated inside the device
When using only reflective protection, interference between internal circuits is likely to occur. Therefore, it is necessary also to use absorbers to absorb the reflected waves.