Shielding requirements for Ethernet communication lines

　　The shielding requirements for Ethernet communication lines mainly depend on the communication rate, tranSMission distance, and electromagnetic interference in the surrounding environment. The following is a detailed analysis of the shielding requirements for Ethernet communication lines:

　　First, the type of shielding

　　Unshielded Twisted Pair (UTP):

　　It is suitable for environments with low electromagnetic interference.

　　The cost is relatively low, making it easy to install and maintain.

　　Shielded Twisted Pair (STP):

　　A wire mesh shield that passes through four pairs in a twisted pair cable minimizes electromagnetic radiation (EMI) and sensitivity to electrical noise outside the wire.

　　It is suitable for environments with high electromagnetic interference, such as hospitals, factories, and other places with strong electromagnetic radiation or with a large number of strong electrical equipment.

　　The price is higher, and it needs to be properly installed in the appropriate ground equipment, and the shielded cable needs to be properly grounded to avoid signal loss due to current problems caused by incorrect grounding.

　　Second, shielding materials

　　Aluminum Foil Myra:

　　Soft aluminum foil and polyester film were used as raw materials and compounded with gravure coating.

　　Adjustable coating, aluminum foil Mylar die-cut can be used to assemble shielding and grounding.

　　Mainly used for shielding communication cables, it can prevent high-frequency electromagnetic waves from contacting the conductor of the cable to generate induced current and increase crosstalk.

　　Woven net:

　　It is usually made of tinned copper wire or aluminum-magnesium gold wire.

　　Mainly to prevent low-frequency electromagnetic interference.

　　The use of braided mesh shielding requires the density of the braided mesh to be generally at least 80%.

　　III. Shielding effect

　　Reduce electromagnetic interference: The shielding layer can effectively reduce the interference of external electromagnetic fields on communication lines, ensuring the stability and integrity of the signal.

　　Prevent information leakage: The shielding layer can isolate external electromagnetic fields and prevent information in communication lines from being stolen or interfered with.

　　IV. Installation and grounding

　　Correct installation: The shielded twisted pair needs to be installed according to the specifications to ensure that the shielding layer is in good contact with connectors, terminals, and other components.

　　Grounding requirements: The shield must be properly grounded to avoid signal loss due to current problems caused by incorrect grounding. The choice of grounding method should be determined according to the specific environment and application requirements.

　　In summary, the shielding requirements of Ethernet communication lines involve many aspects such as shielding type, shielding material, shielding effect, installation and grounding. In practical applications, appropriate shielding methods and materials should be selected according to specific environments and application requirements to ensure the stability and integrity of communication signals.