PS360L-40G-GF Phase Stable Coaxial Cable
3.60mm Outer Diameter | 40GHz Max Frequency | Silver-Plated Copper Strip Shield
PS360L-40G-GF is a high-precision 50Ω flexible phase-stable coaxial cable engineered for mmWave applications up to 40GHz. Featuring a solid 0.91mm silver-plated copper inner conductor, microporous LD-PTFE dielectric, and a helically wrapped silver-plated copper strip inner shield, it delivers significantly lower insertion loss and superior power handling in the 26.5GHz–40GHz band compared to foil-shielded alternatives.
Max Frequency:DC-40GHz
Velocity of Prop.：83%
Inner ConductorStranded SPC (1/0.91mm)
Outer Diameter:3.6mm
Structure & Construction Characteristics
| Layer | Material Specification | Construction (mm) | Nominal O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Silver Plated Copper (SPC) | 1 / 0.91 | 0.91 |
| Insulation Dielectric | Low Density PTFE (LD-PTFE) | – | 2.50 |
| Inner Shield | Silver Plated Copper Strip (SPC Tape Wrap) | – | 2.66 |
| Outer Shield | Silver Plated Copper Wire Braid | – | 3.11 |
| Outer Jacket | Gray FEP | – | 3.60 |
Mechanical & Environmental Parameters
| Min. Bending Radius (Static) | 16.0 mm | Operating Temperature Range | -55 °C to +165 °C |
|---|---|---|---|
| Min. Bending Radius (Dynamic) | 36.0 mm | Nominal Cable Weight | 0.032 kg/m |
Electrical & Mechanical Characteristics
| Impedance | 50 Ω | Max Operating Frequency | 40 GHz |
|---|---|---|---|
| Velocity of Propagation | 83 % | Capacitance | 80 pF/m |
| Screening Effectiveness | > 90 dB | Dielectric Withstanding Voltage | 1000 V DC |
| Phase Change vs Bending | ±0.3 °/GHz | Phase Change vs Temp (-45~+85°C) | ≤ 750 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation: IL (dB/100m) = 0.986836837 * sqrt(F_MHz) + 0.000547893 * F_MHz | Tested at 25°C
| 500 | 26.40 | 725 |
| 1000 | 37.50 | 510 |
| 3000 | 65.65 | 292 |
| 4000 | 76.10 | 252 |
| 6000 | 93.81 | 204 |
| 8000 | 108.91 | 176 |
| 10000 | 122.35 | 156 |
| 12400 | 136.94 | 140 |
| 18000 | 166.67 | 115 |
| 26500 | 204.79 | 93 |
| 40000 | 255.69 | 75 |
Series Comparison: PS360L-40G-GF vs. PS360L-40G-BF
While both cables feature a compact 3.60mm outer diameter and 40GHz frequency ceiling, PS360L-40G-GF (Gray FEP) incorporates a helically wrapped silver-plated copper strip inner shield, optimized specifically for minimal attenuation and higher power handling at millimeter-wave frequencies above 26.5GHz (255.69 dB/100m @ 40GHz). Conversely, its sister model PS360L-40G-BF (Blue FEP) uses a self-adhesive aluminum foil inner shield with a thicker 2.70mm dielectric, making it lighter and slightly better optimized for sub-18GHz insertion loss.
Frequently Asked Questions
Why choose the silver-plated copper tape shield in PS360L-40G-GF over aluminum foil shielding?
The silver-plated copper tape in PS360L-40G-GF provides superior high-frequency surface conductivity and eliminates longitudinal seam leakage under flexure. This results in significantly lower loss at 40GHz (255.69 dB/100m) and higher continuous RF power capacity compared to aluminum foil designs.
What is the difference between PS360L-40G-GF and PS360L-40G-BF?
PS360L-40G-GF (Gray FEP jacket) utilizes an SPC strip inner shield optimized for high-end mmWave test leads requiring lowest attenuation at 26.5–40GHz. PS360L-40G-BF (Blue FEP jacket) uses a self-adhesive aluminum foil shield optimized for cost-effective sub-18GHz microwave interconnections.
How can I calculate exact cable loss for specific test frequencies?
You can use the formula IL = 0.986836837 * sqrt(F_MHz) + 0.000547893 * F_MHz. For example, at 26.5GHz (26500 MHz), the calculated insertion loss is 204.79 dB/100m.
