Flexible RF Cable Assemblies

Built to Bend, Engineered to Perform

Multi-purpose flexible RF cable assemblies.

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Overview

Flexible assemblies are ideal for:

Routing through tight enclosures
Navigating complex cable paths
Systems subject to vibration or motion
Repeated movement or installation cycles

Flexible RF cable assemblies are the go-to solution for microwave system engineers working in environments where high frequency RF, microwave, and millimeter wave signal performance can’t be compromised, but space, movement, and complexity are major design constraints.

In comparison to hand-formable, semi-rigid, or ruggedized/armored RF cable types, flexible RF assemblies are constructed for repeated movement, tight routing, and ease of install in critical commercial and military RF/microwave systems.

To that end, ConductRF Flexible RF cables are built with stranded center conductors, pliable dielectrics, and layered shielding, allowing them to bend, loop, and move with limited impact on signal performance.

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Frequency Range

Up to 110 GHz

Insertion Loss

As low as 0.25 dB/ft @ 3 GHz (varies by size & frequency)

Phase Stability

±2° to ±12° over temperature or flex

Return Loss

20 30 dB typical

VSWR

As low as 1.15:1

Shielding Performance

80 120 dB isolation depending on shielding type

Cable Diameters

.047 - .250 in.

Min Bend Radius

0.2 - 2.5 in (depending on diameter and construction)

Crush Resistance

up to 1200 lbs/in² for armored flexible cables

Conductor Types

Solid copper or silver-plated copper (for low-loss, high-power)
Stranded copper (for higher flexibility)
Copper-clad steel (for rugged or semi-rigid variants)

Shielding types

Single braid, double braid, foil, or combination

Effectiveness by frequency range

up to 120 dB of isolation, depending on cable and shield construction

PIM considerations for low-noise environments

Low-PIM (< -160 dBc) versions available for DAS and high-precision systems

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Anatomy of a Flexible rf cable

1
Outer Jacket
FEP, polyurethane, or PVC for abrasion resistance and environmental sealing
2/3
Shielding
(2) Braid and/or (3) foil layers for EMI protection and signal containment
4
Dielectric
Solid or foamed PTFE for low loss and impedance control
5
Center Conductor
Stranded copper for high flex life and mechanical durability
+
Optional Enhancements
Double and triple shielding, low-PIM structure, weatherproof jackets, and molded strain reliefs.

Options & Customization

Jacketing Options

Jacketing Material	Properties	Ideal Use Case
LSZH	Low smoke, zero halogen	Naval/Marine, medical, aerospace, public spaces
PVC	Economical, general purpose	Indoor telecom, OEM
PE	UV resistant	Outdoor base stations
FEP	Chemically resistant	Industrial or cleanroom
PTFE	Extreme temperature	Defense, aerospace, vacuum-rated

Strain Relief, Boots, and Marking Options

Option Type	Description	Benefits	Typical Use
Overmolded Boots	Molded plastic or rubber boots around connector	Improved strain relief, sealed ingress protection	Ruggedized field use, outdoor
Molded Strain Reliefs	Pre-formed relief collars	Prevents flex-point damage	Lab, rack-to-rack systems
Color Coded Sleeves	Color plastic or silicone identifiers	Fast visual cable ID	Test labs, telecom panels
Heat Shrink ID Labels	Printable or custom ID wraps	Durable labeling	Aerospace, medical, precision systems
Laser or Inkjet Marking	Permanent direct-to-cable marking	Clean and compliant	Defense, industrial environments

Connector Mating Types

Mating Interface	Frequency Range	Application Notes
SMA	DC 18 GHz	General use, telecom, military
N Type	DC 11 GHz	Rugged field applications
TNC	DC 11 GHz	Similar to SMA but with threaded security
SMP/SMPM	DC–40 / 65 GHz	Miniature, high-frequency board-to-board
2.92mm (K)	DC–40 GHz	Precision testing
2.4mm	DC 50 GHz	Ultra-high-frequency lab testing
1.85mm (V)	DC 67 GHz	Aerospace and test setups

Cable to Connector Termination Styles

Termination Style	Description	Ideal Use Case
Crimp	Connector ferrule compressed around braid	Field serviceable, fast assembly, used with all common cable sizes
Solder	Core and/or braid soldered into place	Higher performance, permanent
Clamp	Mechanical clamp secures braid	Reusable, lower cost
Compression	Tool-less press-fit connection	Quick install, serviceable
Field replaceable	Modular connector ends	Maintenance or rework systems
Overmolded	Fully sealed with molded boot	Rugged, waterproof, outdoor use

Our Markets

Trusted by the World's Toughest Customers

Our RF cable assemblies are relied upon by leading OEMs and system integrators across a full spectrum of industry segments including: radar systems, electronic warfare (EW), MIL/AERO, naval/marine, mobile radio, industrial robotics, medical imaging, telecommunications, and test and measurement. From aircraft carrier and battlefield installations to indoor DAS antenna systems and sophisticated test labs, ConductRF’s RF cable assembly solutions are proven to perform under pressure.