PS480L-31G-F Phase Stable Coaxial Cable
High-Frequency Low-Loss 31 GHz Precision RF Interconnect (FEP Jacket)
The PS480L-31G-F is engineered for high-performance microwave and RF applications up to 31 GHz. Featuring an expanded low-density PTFE (LD-PTFE) dielectric combined with a dual silver-plated copper shield and FEP outer jacket, it delivers exceptional phase stability under bending and temperature fluctuations alongside minimal insertion loss.
Max Frequency:DC-31GHz
Velocity of Prop.：83%
Inner ConductorStranded SPC (1/1.4mm)
Outer Diameter:4.8mm
Structure & Construction Characteristics
| Layer | Component | Material | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Center Conductor (1/1.40mm) | Silver Plated Copper | 1.40 |
| Insulation | Dielectric Core | LD-PTFE (Low Density PTFE) | 3.75 |
| Inner Shield | Helical Tape Shield | Silver Plated Copper Strip | 3.95 |
| Outer Shield | Braided Shield | Silver Plated Copper Wire | 4.35 |
| Jacket | Protective Outer Sheath | Gray FEP | 4.80 |
Mechanical & Environmental Parameters
| Min. Bending Radius (Static) | 24.0 mm | Weight | 0.055 kg/m |
|---|---|---|---|
| Min. Bending Radius (Dynamic) | 48.0 mm | Operating Temperature | -55 ℃ to +165 ℃ |
Electrical & Mechanical Characteristics
| Impedance | 50 Ω | Velocity of Propagation | 83% |
|---|---|---|---|
| Capacitance | 80 pF/m | Max Operating Frequency | 31 GHz |
| Screening Effectiveness | ＞90 dB | Dielectric Withstanding Voltage | 1500 V DC |
| Phase Change vs Bending | ±0.3 °/GHz | Phase Change vs Temp. (-45~+85℃) | ≤ 750 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz (dB/100m)
K1 = 0.75040, K2 = 0.00033
| Frequency (MHz) | Nominal Attenuation (dB/100m @ 25℃) | Max Power Handling (W @ 40℃) |
|---|---|---|
| 300 | 13.10 | 1578 |
| 500 | 16.94 | 1220 |
| 1000 | 24.06 | 859 |
| 3000 | 42.09 | 491 |
| 6000 | 60.09 | 344 |
| 8000 | 69.74 | 296 |
| 10000 | 78.32 | 264 |
| 12400 | 87.63 | 236 |
| 18000 | 106.58 | 194 |
| 20000 | 112.68 | 183 |
| 26500 | 130.85 | 158 |
Industry Cross-Reference
The PS480L-31G-F is engineered to serve as a direct high-reliability equivalent to the following industry standard cable types:
| Manufacturer | Reference Model |
|---|---|
| GORE | CXN3449 |
Frequently Asked Questions
What is the primary advantage of the LD-PTFE dielectric in PS480L-31G-F?
The low-density PTFE structure increases propagation velocity to 83% while substantially reducing dielectric loss, resulting in superior phase stability across high frequencies up to 31 GHz.
How does the dual-shielding structure impact shielding effectiveness?
Combining a silver-plated copper strip inner shield with a braid outer shield yields shielding effectiveness exceeding 90 dB, preventing EMI leakage in dense system assemblies.
What is the phase stability rating under flexure?
The cable demonstrates a phase change vs. bending specification of ±0.3 °/GHz, ensuring stable electrical length during dynamic installation environments.
