Types of Double-Shielded Coaxial Cables- Features and Specifications

Double-shielded coaxial cables, as the name suggests, feature an additional layer of shielding around the inner conductor and dielectric insulation, providing enhanced protection against electromagnetic interference (EMI) and radio frequency interference (RFI). This type of cable is commonly used in demanding applications where signal integrity is paramount, such as data centers, telecommunications, and industrial settings. Here are the main types of double-shielded coaxial cables:

RG-6 Quad Shield Coaxial Cable

RG-6 Quad Shield coaxial cable features a quad-layer shielding design that includes an aluminum foil tape, a braided aluminum mesh, an aluminum foil tape, and an additional braided aluminum mesh. This robust shielding provides exceptional protection against EMI and RFI, making it an ideal choice for high-frequency applications such as video distribution, surveillance systems, and CATV systems.

RG-11 Quad Shield Coaxial Cable

RG-11 Quad Shield coaxial cable has a similar quad-layer shielding design as RG-6 Quad Shield, but with a larger diameter. This increased diameter allows for higher power handling and lower signal loss, making it suitable for long-distance signal transmission in applications such as security systems, telephony, and broadband internet access.

RG-59 Tri Shield Coaxial Cable

RG-59 Tri Shield coaxial cable features a three-layer shielding design that includes an aluminum foil tape, a braided aluminum mesh, and an additional foil shield. This combination provides effective protection against EMI and RFI, making it suitable for medium-frequency applications such as CCTV systems, home networking, and satellite signal distribution.

RG-62 Belden 8723

RG-62 Belden 8723 is a premium double-shielded coaxial cable designed for demanding applications. It features a foil shield and a braided aluminum shield, providing exceptional shielding effectiveness. This cable is commonly used in studio and broadcast applications, where signal integrity is critical.

Features and Specifications

Double-shielded coaxial cables offer several key features and advantages:

Enhanced Shielding: The double shielding provides superior protection against EMI and RFI, ensuring reliable signal transmission.

High Frequency Performance: Double-shielded cables are designed for high-frequency applications, making them ideal for data transmission and video distribution.

Low Signal Loss: Double-shielded cables have a lower signal loss compared to single-shielded cables, enabling longer cable runs without signal degradation.

Durability: The robust construction of double-shielded cables ensures durability and longevity in demanding environments.

Conclusion

Double-shielded coaxial cables play a vital role in applications where signal integrity and protection against interference are paramount. The various types of double-shielded cables, including RG-6 Quad Shield, RG-11 Quad Shield, RG-59 Tri Shield, and RG-62 Belden 8723, offer a range of features and specifications to meet specific requirements. By understanding the different types available, installers and engineers can select the appropriate cable to ensure optimal signal performance in their applications.