RADIAFLEX® Elliptical Waveguide, RE-series

Rev : B | Rev date : 12 Oct 2020
  • RADIAFLEX® series functions as a distributed antenna to provide communications in tunnels, mines and large building complexes and is the solution for any application in confined areas.
  • Slots in the copper outer conductor allow a controlled portion of the internal RF energy to be radiated into the surrounding environment. Conversely, a signal transmitted near the cable will couple into the slots and be carried along the cable length.
  • RADIAFLEX® is used for both one-way and two-way communication systems and because of its broadband capability, a single radiating waveguide can handle multiple communication systems simultaneously.
  • This RADIAFLEX® radiating waveguide is constructed of longitudinally continuous seam welded, highly conductive copper tube, corrugated and precision formed into an elliptical cross section. It is manufactured in continuous lengths using a special seam welding process developed by the RFS organization. The product offers a superior electrical performance together with good bending properties.


  • Optimized for ultra high frequency applications from 5 GHz to 6 GHz
  • Best-in-class, RF wideband radiating waveguide with technology agnostic performance
  • Designed for a variety of in-tunnel applications
  • Lowest insertion loss and excellent coupling performance to minimize count of active equipment; low coupling loss variations
  • Maintains functionality even in case of a fire

RE elliptical waveguide

Technical features

General Specifications


Electrical Specifications

Max. Operating Frequency MHz6000
Cable TypeRE
Frequency Selection MHz6000

Mechanical Specifications

Jacket DescriptionHalogen free, non corrosive, flame and fire retardant, low smoke, polyolefin
Slot DesignMilled
Outer Conductor MaterialCorrugated Copper Tube
Dimension over Jacket mm (in)56 x 33 (2.2 x 1.3)
Min. Bending Radius E Plane w/o rebendingmm (in)200 (8)
Min. Bending Radius H Plane w/o rebendingmm (in)550 (22)
Min. Bending Radius E Plane with rebendingmm (in)300 (12)
Min. Bending Radius H Plane with rebendingmm (in)800 (31)
Cable Weight kg/m (lb/ft)1.1 (0.74)
Indication of Slot AlignmentPrinting on jacket
Recommended / Maximum Clamp Spacing m (ft)2 (5)
Minimum Distance to Wall mm (in)50 (2)

Testing and Environmental

Jacket Testing MethodsTest methods for fire behaviour of cable :
IEC 60754-1/-2 smoke emission: halogen free, non corrosive
IEC 61034 low smoke
IEC 60332-1 flame retardant
IEC 60332-3-24 fire retardant

Temperature Specifications

Storage Temperature °C(°F)-70 to 85 (-94 to 185 )
Installation Temperature °C(°F)-25 to 60 (-13 to 140 )
Operation Temperature °C(°F)-40 to 85 (-40 to 185 )

Attenuation and Power Rating

Frequency, MHzLongitudinal Loss, dB/100 m (dB/100 ft)Coupling Loss 50%, dBCoupling Loss 95%, dB
5000 4.90 (1.49) 74 80
5100 4.90 (1.49) 74 80
5200 4.80 (1.46) 74 80
5300 4.80 (1.46) 74 80
5400 4.80 (1.46) 74 80
5500 4.80 (1.46) 74 80
5600 4.80 (1.46) 74 80
5700 4.80 (1.46) 74 80
5800 4.80 (1.46) 74 80
5900 4.80 (1.46) 74 80
6000 4.80 (1.46) 74 80

External Document Links


  • Coupling loss as well as longitudinal attenuation of RADIAFLEX® elliptical waveguides is measured by the free space method according to IEC 61196-4.
  • Coupling loss values are measured with a log-periodic antenna with gain of approx. 6 dBi in specified frequency range.
  • The coupling loss values are average values of the three spatial orientations (radial, parallel and orthogonal) of log-periodic antenna.
  • Coupling loss values are given with a tolerance of ±6 dB and longitudinal loss values with a tolerance of ±5%.
  • As with any radiating element, the performance in building or tunnel enviorments may deviate from figures based on free space mthod.