Conductive enclosures are used to eliminate emanations and
induced signals from an enclosed environment. Examples include the use of
tempest shielding to reduce emanations from video display units, the use of
wire mesh enclosures to eliminate emanations from small installations and
computer rooms, and the use of metallic enclosures to prevent electromagnetic
pulse weapons from disabling enclosed systems.
Complexity: The only complexity involved in the design of Faraday cages comes
from determining the frequency range to be protected and calculating the size
of mesh required to eliminate the relevant signals. Some care must be
taken to assure that the shielding is properly in place and fully
effective.
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