VXS Series · PUR Jacket · Up to 18 GHz

Flexible Low Loss Cable

Highly flexible PUR-jacketed 50Ω cables for dynamic routing and movement-sensitive RF systems.

Engineered to balance controlled attenuation with practical routing softness. The VXS series is selected when standard flexible cable lacks the required signal performance, but larger low-loss platforms are too rigid for the installation envelope.

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What is Flexible Low Loss Cable?

A 50Ω cable family providing lower attenuation than general flexible cable while remaining softer and easier to route than larger low-loss constructions. Intended for installed RF paths where both signal control and handling matter.

What Makes VXS Different?

The VXS Series utilizes a PUR jacket rather than FEP, making it optimal for dynamic routing and repeated movement. It is specified when mechanical flexibility is the primary design filter within a -55°C to +85°C window, whereas the VXL series serves higher-temperature, transmission-focused paths.

Engineering Note: Choose VXS when routing softness and dynamic handling matter more. Evaluate the Low Loss Cable (VXL series) when lower attenuation, extended temperature range, and broader transmission capability are the primary filters.

Why Choose This Family?

Lower Loss with Softer Routing

Chosen when standard flexible cable is too lossy but larger low loss cable is harder to route.

PUR Jacket for Dynamic Handling

PUR jacket supports practical routing, abrasion resistance, and repeated movement in real equipment.

Smaller Bend Envelope Than Larger Low Loss Platforms

Provides a relative routing advantage in tighter installation envelopes where the layout cannot accommodate the minimum bend radius of larger, stiffer constructions.

Assembly-Ready for Mobile and Compact RF Systems

Engineered for real routed assemblies. Works reliably in compact RF integration and movement-sensitive installed systems where loss and cable handling must be balanced.

Model Performance Overview

Screen the VXS series by attenuation, diameter, bend planning, and dynamic handling before moving into detailed assembly definition.

Reference Attenuation Comparison

Published flexible cable attenuation (dB/100m) across representative frequencies.

S50 - Compact Flexible Platform

Better when routed space is tighter and the design needs a smaller flexible low loss option with a higher frequency ceiling than larger soft-routing platforms.

  • Dynamic Bend Radius: 50 mm
  • Usually chosen for: denser layouts, lighter assemblies, smaller RF harnesses
S73 - Balanced Routing Platform

Better when the design needs a practical middle ground between attenuation, mechanical softness, and installed routing convenience.

  • Dynamic Bend Radius: 73 mm
  • Usually chosen for: mobile RF equipment, subsystem routing, medium-duty interconnect paths
S100 - Larger Lower-Loss Flexible Platform

Better when lower attenuation matters more, while the system still needs a softer routed cable platform than a larger low loss family.

  • Dynamic Bend Radius: 100 mm
  • Usually chosen for: longer flexible runs, larger enclosures, lower-loss mobile or radio paths

Recommended Decision Table

Structural and electrical reference parameters for VXS series model screening.

Model OD (mm) Operating Freq. Cut-off Freq. Attenuation @ 1 GHz Attenuation @ 10 GHz Velocity (Vp) Static Bend Radius Dynamic Bend Radius Temp Range
S50 5.00 18 GHz 37 GHz 45.2 dB/100m 143.1 dB/100m 81% 20 mm 50 mm -55 ~ +85°C
S73 7.30 18 GHz 23 GHz 34.8 dB/100m 110.1 dB/100m 81% 29.2 mm 73 mm -55 ~ +85°C
S100 10.00 15 GHz 16 GHz 22.6 dB/100m 71.6 dB/100m 81% 50 mm 100 mm -55 ~ +85°C

Note: Raw cable attenuation, bend radius, and operating range should be evaluated together with length, routing envelope, and selected connector interface in the finished assembly.

Representative Assemblies

Three practical assembly directions for the VXS flexible low loss family.

Dynamic RF Interconnect

Dynamic RF Interconnect

For routed RF assemblies that experience repeated movement, maintenance access, or articulated installation conditions.

  • Typical fit Moving structural elements / articulated layouts
  • Priority Flex life and routing softness
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Compact System Routing Assembly

Compact System Routing Assembly

For compact chassis and internal RF paths where lower attenuation is needed without using a stiffer larger low loss platform.

  • Typical fit Tight hardware packaging
  • Priority Compact routing balance
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Flexible Low Loss Test Lead

Flexible Low Loss Test Lead

For RF validation and general handling-intensive test paths where softer cable feel and better durability are important.

  • Typical fit Bench and general RF validation
  • Priority Handling softness
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Typical Applications

Radio Equipment Transmission

RF paths inside radio equipment where controlled attenuation and softer cable routing both matter.

Mobile Device Signal Transmission

Signal paths in compact or portable equipment where routing space is limited and installed cable handling matters.

Compact RF Interconnect Systems

Subsystem links requiring lower attenuation than general-purpose flexible cable, but where the routing envelope cannot support a larger low-loss platform.

General Dynamic RF Assemblies

Installed RF or microwave assemblies that experience repeated movement, tighter bend conditions, or more demanding routing paths.

Flexible Low Loss Cable FAQ

What defines a flexible low loss RF cable?

A flexible low loss RF cable combines low attenuation characteristics with high physical flexibility, typically utilizing a Polyurethane (PUR) jacket to allow for dynamic routing and repeated bending in applications where softer cable handling and mechanical flexibility are important.

PUR vs. FEP jacket: Which should I specify?

Specify the PUR-jacketed VXS series for applications requiring dynamic routing and flexibility within a -55°C to +85°C range. For static installations, higher temperature environments up to +165°C, or more transmission-priority applications, specify the FEP-jacketed VXL series.

How does dynamic bend radius affect cable selection?

Dynamic bend radius is a design screening parameter for repeated movement and installation planning. Constraining movement at or above this radius helps support shielding integrity and impedance consistency during repeated movement and installed routing use.

Are VXS cables suitable for phase-critical applications?

VXS cables are optimized for low loss and flexibility, not strict phase tracking. If phase consistency over temperature or bending is the main design concern, evaluate our Phase-Stable Flexible Cable family.

How do I choose between the S50, S73, and S100 models?

The S50 is optimal for compact layouts requiring a smaller diameter and higher frequency reach. The S73 provides a balanced routing platform for medium-duty interconnects. The S100 is selected for longer flexible runs where achieving lower attenuation is more critical than minimizing cable size.

Can Vinstronics provide terminated flexible low loss cable assemblies?

Yes. We support flexible low loss assemblies with selected interfaces, defined lengths, and routing-oriented configuration support.

Flexible Low Loss Cable Specification Guide

Download the technical datasheet to review complete attenuation data and mechanical limits.

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Discuss Your Flexible Low Loss Requirement

Our engineering team can help evaluate whether the VXS series provides the right balance of low attenuation and flexibility for your system, including bend planning, movement constraints, connector compatibility, and custom cable assembly definition.

Useful information to send
  • • Operating frequency range
  • • Approximate cable length
  • • Minimum static or dynamic bend radius
  • • Expected movement or bend condition
  • • Connector interface requirement
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