Overview
Double shielded coaxial cable is engineered for environments where electromagnetic interference (EMI) and radio frequency interference (RFI) are concerns. Its dual-layer shielding—typically a combination of braided copper and aluminum foil—provides superior protection compared to single-shielded variants. This cable is widely used in professional audio/video systems, data communication networks, and industrial control systems. The design ensures consistent signal quality over long distances, making it a preferred choice for critical applications where signal integrity cannot be compromised.
Structure and Working Principle
The cable consists of a central copper conductor surrounded by dielectric insulation, followed by two shielding layers: an inner foil shield and an outer braided shield. The outer jacket provides additional protection against physical damage and environmental factors. The dual shielding works by reflecting and absorbing electromagnetic waves, preventing them from penetrating the cable and distorting the signal. The braided shield offers flexibility and mechanical strength, while the foil shield provides complete coverage, minimizing gaps where interference could leak in.
Key Features
Key features include high shielding effectiveness (typically >90 dB), low capacitance, and stable impedance characteristics. The cable is also designed for flexibility, allowing it to be routed in tight spaces without performance degradation. Additional benefits include resistance to moisture, chemicals, and UV radiation, depending on the jacket material. These properties make it suitable for both indoor and outdoor use in harsh industrial environments.
Application Areas
Primary applications include broadcast studios, where clean signal transmission is essential, and telecommunications infrastructure, such as cellular base stations. It is also used in medical imaging equipment and military communications due to its reliability. In industrial settings, the cable is employed in PLC systems, instrumentation, and automation controls where electrical noise from machinery could disrupt sensitive signals. Its robustness ensures long-term performance in challenging conditions.
Maintenance and Precautions
To maintain performance, avoid kinking or crushing the cable during installation. Use appropriate connectors rated for the cable’s impedance and ensure proper grounding of the shield to prevent ground loops. Regular inspections for jacket damage or shield corrosion are recommended, especially in outdoor or high-humidity environments. Storage should be in a dry, temperature-controlled area to prevent material degradation.
B2B Procurement Guide
When procuring double shielded coaxial cable, specify the required impedance (e.g., 50Ω for RF applications or 75Ω for video). Verify shielding effectiveness metrics and compliance with standards like IEC 61196 or MIL-STD-202. Bulk purchases often qualify for discounts, but ensure the supplier provides certification for quality assurance. Lead times can vary based on customization (e.g., jacket color or length), so plan procurement accordingly for project timelines.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：工程机械电缆、欧标电缆、意大利标准电缆、卷筒电缆、拖链电缆、机器人电缆、无卤电缆、仪表电缆、耐高温电缆、防水电缆、扁平电缆、轨道交通电缆
- 主营：聚氨酯卷筒电缆、拖链电缆、零浮力电缆、抗拉电缆
- 主营：电刷架、导电环、集电环、线缆设备、刷架总成、导电滑环、碳刷标准、碳刷滑环、高压电机、石墨碳刷电刷、碳刷在线监测、碳粉收集器
- 主营：天津市电缆总厂橡塑电缆厂、廊坊生产各种特种电缆、包括矿用、船用、通信电缆等
- 主营：橡套电缆、矿用移动橡胶软电缆、船用电缆、屏蔽信号电缆、防水电缆、铁路信号电缆、矿用网线、通信电缆、MHYV矿用通信电缆、计算机电缆、控制电缆、矿用控制电缆、矿用采煤机电缆、电力电缆、矿用高压电力电缆、低烟无卤电缆、变频电缆、软芯电源线、监控信号电缆、橡胶电缆、盾构机电缆
- 主营：矿物绝缘防火电缆、电力电缆、光伏电缆、津达线缆、高压屏蔽橡套线、高压电缆、阻燃计算机电缆、矿用电缆、阻燃耐火电线、架空线、计算机电缆、软塑力电缆、大型光伏电缆、低压铜铝电缆、35KV新能源电缆、橡套线、低烟无卤耐火阻燃电缆、MY煤矿用井下电源线、防水线、国标橡套线、橡套电缆、阻燃软电缆、耐高温橡套线、高压橡套电缆、潜水泵专用电线
- 主营：电力电缆、矿用电缆、通讯电缆、卷筒电缆、橡套电缆、仪表信号电缆、电源线、控制电缆、计算机电缆、防水电缆、耐低温电缆、耐高温电缆、特种电缆
- 主营：电缆盘、轴盘钢木、木电缆轴、线缆轴盘、电线轴盘、缠绕轴盘、盘瓦楞轴、轴盘架子、铁轴瓦楞、电缆线轴、盘网络线、电缆轴盘、定制电缆轴、电缆轴铁架、木轴铁木盘、木质电缆轴、电缆电线盘、卷线轴电缆、电缆电缆轴、电缆电线轴、瓦楞盘电缆、电缆轴架子、铁木盘电缆、盘架子瓦楞、瓦楞盘冲压
- 主营：电缆钢、电缆盘、角钢可、线缆轴盘、线缆铁木盘、电缆沟、铁木轴盘、电缆线盘、电缆轴盘、角钢电力、电缆木盘、电缆放线盘、电缆胶木盘、电缆放线架、电缆外包装
- 主营：卷线盘、瓦楞轴、实木轴盘、线缆轴盘、电缆卷筒、线缆放线盘、电缆线缆绕线盘、木质线缆轴盘、出口线缆盘、电缆线盘、电缆轴盘、缆线轴盘、电缆卷盘、电缆绕线盘、电缆绕线卷盘、瓦楞电缆卷线轴、铁木轴盘、工字轮、绕线盘、存线轴盘、大型轴盘、实木电缆轴盘、电缆存放盘
- 主营：特种电缆、矿用橡套电缆、矿用通信电缆、屏蔽控制电缆、计算机屏蔽电缆、KVVP屏蔽控制电缆、多芯计算机线缆、矿用屏蔽控制电缆、矿用金属屏蔽橡套电缆、阻燃计算机屏蔽电缆、矿用控制电缆、光缆、计算机电缆ZR-DJ、阻燃计算机电缆、通信光缆、MY矿用橡套软电缆、矿用阻燃控制电缆、铠装控制电缆、矿用阻燃橡套电缆、矿用通讯拉力电缆、绝缘计算机电缆、煤矿井下矿用电缆、计算机信号电缆、DJYPV计算机电缆、矿用铠装控制电缆
- 主营：拖链电缆、伺服电机电缆、耐油电缆、卷筒电缆、屏蔽控制电缆、扁平电缆、编码器电缆、防水电缆
- 主营：动力头、提升机、减速机、电缆卷筒、定向钻机、电动绞盘、行星齿轮、钻井平台、泵车回转、提升绞车、汽车绞盘、总成轴承、液压绞盘、总成太阳轮、钻通非开挖、绞盘尼龙绳、越野车绞盘、车改装绞盘、液压卷扬机、插秧机绞盘、机械排绳器、拖拉机货车、水平定向钻、车载小吊机、绞盘平板拖车、输出轴行星架
- 主营：集电环、碳刷、碳刷架、线缆机械集电环、恒压簧、电机风叶、导电环、滑环、刷盒、刷握、铜碳刷、铜刷盒、铜电刷、铝风叶、j204碳刷、碳刷电刷、碳刷压簧、耐磨高铜、滑环碳刷、电机配件、耐磨碳刷、转数碳刷、电机碳刷、滑环电刷
- 主营：实木电缆盘、出口熏蒸木轴、免熏蒸电缆线盘、电缆卷筒、木卷筒、木质工字轮、胶木电缆轴盘、夹板盘、木质电缆盘、木电缆盘、木质电缆轴、电缆线盘、木线盘、胶合板电缆盘、多层板电缆盘、大型电缆盘、小型电缆盘、加厚电缆盘
- 主营：电缆木轴、电缆轴盘、电缆线盘、电缆卷筒、电缆盘、胶木电缆盘、实木电缆盘、木质电缆盘、木电缆盘、木质电缆轴、小型电缆盘、大型电缆盘、加厚电缆盘、胶合板电缆盘