What is shielding? Why do you need it?

Release time: 2024-12-12

Author: Signal

Views: 55

  What is shielding? Why do you need it

  

  Radio waves are part of a wide range of radiation,including X-rays,visible light and microwaves.This is the electromagnetic spectrum covering the range of frequencies from very low to very high,with visible light occupying only a small part of the centre.


  This electromagnetic radiation is closely related to electrical signals.Electromagnetism has a direct effect on the operation of electronic systems.It affects the transmission of data and signals along cables,and almost all equipment that uses electricity naturally generates electromagnetic radiation during its operation.


  Electronic equipment needs to operate in this environment and resist electromagnetic interference,however it is generated.Some systems(including power supplies or low-speed signals)may be less affected than the latest high-speed communications.


  To protect these devices,designers provide them with shielding.Shielding takes the form of a conductive covering that wraps around the equipment,preventing radiation from entering or leaving.Cables are often equipped with a shield,usually a braided sleeve or foil layer beneath the cable casing.For this shielding to work,it needs to be grounded so that unwanted signals can be safely transmitted.


  Connectors are often a key part of the shielding and for this reason the connector shell needs to be made of a conductive material.The Signal range of circular connectors uses a stainless steel shell to provide the ideal combination of mechanical strength and electrical shielding.