PS540L-26.5G-F
High Frequency Low Loss Phase Stable Coaxial Cable (DC–26.5GHz, Solid Conductor)
Engineered with a precision solid silver-plated copper inner conductor, LD-PTFE dielectric, and FEP outer jacket to achieve minimum insertion loss and superior phase stability up to 26.5GHz. Designed specifically for high-frequency microwave systems, radar interconnects, and demanding test assemblies.
Max Frequency:DC-26.5GHz
Velocity of Prop.：83%
Inner Conductor：Solid SPC (1/1.60mm)
Outer Diameter:5.4mm
Structure & Construction Characteristics
| Construction Part | Material | Construction (mm) | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Solid Silver Plated Copper (SPC) | 1 / 1.60 | 1.60 |
| Insulation | Low-Density PTFE (LD-PTFE) | – | 4.35 |
| Inner Shield | Silver Plated Copper Strip | Helical Wrap | 4.55 |
| Outer Shield | Silver Plated Copper Wire | Braid Coverage | 4.95 |
| Jacket | Gray Fluorinated Ethylene Propylene (FEP) | – | 5.40 |
Mechanical & Environmental Parameters
| Parameter | Standard Value | Parameter | Standard Value |
|---|---|---|---|
| Min. Bending Radius (Static) | 27.0 mm | Weight | 0.075 kg/m |
| Min. Bending Radius (Dynamic) | 54.0 mm | Operating Temperature | -55 ℃ to +165 ℃ |
Electrical & Mechanical Characteristics
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Impedance | 50 Ω | Dielectric Withstanding Voltage | 2000 V DC |
| Capacitance | 80 pF/m | Phase Change vs. Bending | ±0.3 °/GHz |
| Velocity Ratio (Velocity of Propagation) | 83% | Phase Change vs. Temp. (-45 to +85℃) | ≤ 750 PPM |
| Max Operating Frequency | 26.5 GHz | Screening Effectiveness | > 90 dB |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation Formula:
IL = K1 * sqrt(F_MHz) + K2 * F_MHz (dB/100m)
Constants: K1 = 0.779036, K2 = 0.000770
| Frequency (MHz) | Nominal Attenuation (@25℃, Sea Level) (dB/100m) | Max Power Handling (@40℃, Sea Level) (W) |
|---|---|---|
| 300 | 13.72 | 1780 |
| 500 | 17.80 | 1372 |
| 1000 | 25.40 | 962 |
| 3000 | 44.98 | 543 |
| 6000 | 64.96 | 376 |
| 8000 | 75.84 | 322 |
| 10000 | 85.60 | 285 |
| 12400 | 96.29 | 254 |
| 18000 | 118.37 | 206 |
| 20000 | 125.57 | 195 |
| 26500 | 147.21 | 166 |
Direct Drop-in Replacement Compatibility
The PS540L-26.5G-F is functionally and dimensionally equivalent to industry-standard high-frequency phase-stable cables including IW 1501 / Semflex HP190 and equivalent 5.40mm (0.213″) low-loss PTFE flexible coaxial cables, delivering matching mechanical tolerances, low attenuation, and high phase stability.
Frequently Asked Questions
What is the main structural feature of PS540L-26.5G-F?
PS540L-26.5G-F utilizes a solid silver-plated copper inner conductor (1/1.60mm) combined with low-density PTFE (LD-PTFE) insulation, delivering exceptionally low attenuation and reliable phase tracking up to 26.5GHz.
How does PS540L-26.5G-F compare to stranded conductor alternatives?
Solid inner conductor designs like PS540L-26.5G-F provide optimal attenuation performance and structural uniformity, whereas stranded versions offer increased flex life for dynamic bending applications.
What are the minimum bending radius requirements?
The minimum static bending radius is 27.0 mm for fixed installations, and 54.0 mm for repeated flexure applications.
