Description
Radiating cables solve the “line-of-sight” problem in enclosed spaces. By emitting a controlled amount of RF energy through precision-milled slots, the cable creates a consistent cylindrical radiation pattern around its axis. This allows for seamless mobile communication (LTE, 5G, VHF/UHF) without the signal “shadows” or dead zones often caused by traditional point-source antennas in narrow corridors.
The 1/2″ variant is the most popular size for in-building DAS (Distributed Antenna Systems) and metro rail tunnels because it balances a manageable bending radius with the electrical performance needed for multi-carrier systems. It is typically jacketed in Low Smoke Zero Halogen (LSZH) materials to meet strict fire safety regulations for underground and public spaces.
Key Technical Advantages
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Uniform Signal Distribution: Provides consistent field strength along the entire cable run, eliminating the “near-far” power issues found with standard antennas.
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Broadband Performance: Modern 1/2″ radiating cables (like RFS RADIAFLEX) can support multiple bands from 75 MHz to 6000 MHz, including all 5G Sub-6GHz frequencies.
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Controlled Coverage: Signals are confined to the immediate vicinity of the cable, reducing interference with external networks and improving frequency reuse.
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Reliability in Enclosed Spaces: Ideal for tunnels where signal propagation is naturally blocked by rock, concrete, or complex architecture.
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Simplified Installation: Acts as its own antenna system, reducing the need for numerous discrete antennas, splitters, and complex cable branching.
Key Features
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Impedance: 50 Ohm (Standard).
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Outer Conductor: Slotted Copper Foil or Corrugated Copper.
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Dielectric: Physically Foamed Polyethylene.
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Jacket: LSZH Fire-Retardant (Typically Black or Yellow).
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Bending Radius: ~125mm to 200mm (Single Bend).
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Applications: Metro Tunnels, Underground Mines, High-Rise Stairwells, and Aircraft Cabins.
🔹 Applications:
- Tunnel communication systems
- Underground metro and railway networks
- In-building DAS systems
- Mining communication systems
- Signal coverage in enclosed spaces
- Emergency communication networks
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