1.The necessity of electromagnetic shielding
As modern electronic technology develops toward high frequency, high efficiency, high integration, high reliability, and high precision, electromagnetic interference has become a prominent obstacle to the normal operation of systems and equipment. For example, signal transmission cables are not only subject to interference from the outside world, but also produce various electromagnetic interferences that affect the external space. Therefore, to reduce or reduce the electromagnetic interference from the outside world on signal transmission cables, it is necessary to take electromagnetic shielding measures.
2.Electromagnetic shielding
When high-frequency circuits are working, they will radiate electromagnetic waves outward, causing interference to other nearby equipment; on the other hand, various electromagnetic waves in the space will also induce interference to the circuits in the circuit. The function of electromagnetic shielding is to cut off the propagation path of electromagnetic waves, thereby eliminating interference.
3. The purpose of electromagnetic shielding
Control the electromagnetic field in the internal radiation area to prevent it from exceeding a certain area.
Controlling the interior prevents external radiation from entering an area.