Do you understand the principle of shielding network cables?

　　The principle of shielded cable is mainly based on its unique structure and material design. The following is a detailed explanation of the principle of shielded cable:

　　First, structural characteristics

　　The shielded network cable adds one or more metal shielding layers inside the insulating layer, which are usually composed of aluminum foil or metal woven mesh. This design enables the shielded network cable to effectively reduce the impact of external electromagnetic interference on data tranSMission, while preventing information from being eavesdropped.

　　II. Working principle

　　Electromagnetic shielding:

　　The metal shielding layer of the shielding network cable effectively blocks external electromagnetic waves from entering the cable through the principles of reflection, absorption and skin effect, thereby protecting the internal signal from interference.

　　At the same time, the metal shielding layer also prevents internal signals from being radiated out, thus avoiding interference with other equipment.

　　Grounding mechanism:

　　The metal shielding layer of the shielding network cable needs to be grounded to form a complete electromagnetic shielding system.

　　After being grounded, the metal shielding layer can channel the absorbed electromagnetic interference energy into the earth, further reducing the impact of interference on data transmission.

　　III. Application scenarios

　　Shielded network cables are usually used in situations with complex electromagnetic environments or strong interference, such as industrial sites, data centers, computer room environments, and hospitals and financial end point equipment with high cyber security requirements. In these environments, shielded network cables can effectively ensure stable data transmission and high confidentiality.

　　IV. Comparison with unshielded network cables

　　Structure: There is no continuous shielding layer inside the unshielded network cable, and the structure is relatively simple.

　　Performance: In an environment with low electromagnetic interference, unshielded network cables can provide stable and reliable data transmission performance. However, in an environment with strong electromagnetic interference, its performance may be affected.

　　Price: Unshielded network cables are relatively inexpensive and suitable for use in ordinary daily network environments. The shielded network cable is more expensive, but provides better electromagnetic shielding effect.

　　In summary, the principle of the shielded network cable is mainly based on its unique metal shielding layer structure and grounding mechanism. These designs enable the shielded network cable to effectively reduce the impact of external electromagnetic interference on data transmission, ensuring stable data transmission and high confidentiality.