26.5 GHz Robust High-Temperature Phase-Stable RF Cable IR54
P/N: IR54
– Robust cable for 26.5 GHz RF paths
– 5.40 mm jacket adds handling margin
– High-voltage structure for demanding systems
– Thermal endurance for harsh installations
– Built for phase-sensitive assemblies
Engineering Note
The IR54 / VXIR540 is a robust high-temperature phase-stable RF coaxial cable for mechanically demanding 26.5 GHz microwave paths where thermal survivability and handling margin are more important than the smallest possible cable diameter. Its 5.40 mm PI + PTFE jacket, larger silver-plated copper conductor, LD PTFE dielectric, tape shield, interlayer, and braided outer shield support harsher stationary routing, with confirmed 1500 VDC dielectric withstand voltage, >90 dB shielding effectiveness, and 400 °C / 400 s high-temperature endurance for onboard RF links, robust thermal test paths, and phase-sensitive assemblies.
Technical Specifications
| Cable Name | IR54 |
|---|---|
| Part No | VXIR540 |
| Product Type | High-temperature phase-stable RF coaxial cable |
| Cable Structure | 6-layer construction with silver-plated copper center conductor, LD PTFE dielectric, silver-plated copper tape inner shield, LD PTFE interlayer, silver-plated copper wire outer shield, and PI + PTFE outer jacket |
| Operating Frequency | 26.5 GHz |
| Cut-off Frequency | 31 GHz |
| Impedance | 50 Ω |
| Velocity of Propagation | 83% |
| Shielding Effectiveness | >90 dB |
| Dielectric Withstanding Voltage | 1500 VDC |
| Static Bending Radius | 27 mm |
| Dynamic Bending Radius | 54 mm |
| Weight | 0.060 kg/m |
| Storage Temperature | -55 °C to +125 °C |
| High-Temp Endurance | 400 °C @ 400 s |
| Center Conductor | Silver-plated copper, 1.40 mm |
| Dielectric | LD PTFE, 3.75 mm |
| Inner Shield | Silver-plated copper tape, 3.95 mm |
| Interlayer | LD PTFE, 4.20 mm |
| Outer Shield | Silver-plated copper wire, 4.65 mm |
| Outer Jacket | PI + PTFE, 5.40 mm |
| Outer Diameter | 5.40 mm |
Attenuation
| Frequency (MHz) | 1000 | 2000 | 3000 | 6000 | 8000 | 10000 | 12400 | 18000 | 26500 |
|---|---|---|---|---|---|---|---|---|---|
| Attenuation (dB/100 m) | 24.3 | 34.6 | 42.7 | 61.1 | 71.0 | 79.9 | 89.5 | 109.2 | 134.5 |
Average Power
| Frequency (MHz) | 1000 | 2000 | 3000 | 6000 | 8000 | 10000 | 12400 | 18000 | 26500 |
|---|---|---|---|---|---|---|---|---|---|
| Average Power (kW) | 1.050 | 0.737 | 0.598 | 0.418 | 0.359 | 0.320 | 0.285 | 0.234 | 0.190 |
Target Applications
Robust Harsh-Environment Routing
26.5 GHz cable paths where larger diameter, bend radius, and jacket structure provide more mechanical margin than compact IR formats.
High-Temperature Onboard RF Links
Stationary onboard RF links exposed to elevated thermal stress where 1500 VDC withstand voltage and shielding are selection factors.
Thermal Test Platforms
RF interconnects for high-temperature evaluation setups that need lower attenuation and higher average power than smaller 40 GHz formats.
Phase-Sensitive Assemblies
Harsh-environment assemblies where phase-stable cable category and mechanically stronger routing support measurement continuity.
Engineering Support
Need a Quote or Technical Support?
Share the part number, required quantity and application requirements. Our engineering team can assist with product selection, configuration review and quotation support.
Product selection support
Custom configurations available
Specification and compatibility review