PS360L-40G-BF High Frequency Phase Stable Cable (40GHz)
40GHz High-Frequency Solid-Conductor Phase-Stable Coaxial Cable
Engineered for precision RF interconnects, PS360L-40G-BF utilizes a 0.91mm solid silver-plated copper inner conductor combined with low-density PTFE (LD-PTFE) dielectric. Designed for optimal attenuation efficiency, phase stability, and thermal resilience up to 40 GHz.
Max Frequency:DC-40GHz
Velocity of Prop.：76%
Screening Effectiveness: > 90 dB
Outer Diameter:3.6mm
Structure & Construction Characteristics
| Structure Component | Item / Parameter | Material | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Solid Conductor (1/0.91 mm) | Silver Plated Copper | 0.91 |
| Insulation | Low Density Dielectric | LD-PTFE | 2.70 |
| Inner Shield | Helical Tape Wrap | Self-adhesive Aluminium Foil | 2.78 |
| Outer Shield | Outer Braid Wire | Silver Plated Copper Wire | 3.18 |
| Jacket | Outer Protective Layer | Blue FEP | 3.60 |
Mechanical & Environmental Parameters
| Parameter | Specification |
|---|---|
| Min Bending Radius (Static) | 18.0 mm |
| Min Bending Radius (Dynamic) | 36.0 mm |
| Weight | 0.029 kg/m |
| Operating Temperature | -55°C to +125°C |
Electrical & Mechanical Characteristics
| Parameter | Value | Unit |
|---|---|---|
| Impedance | 50 | Ω |
| Capacitance | 88 | pF/m |
| Velocity of Propagation | 76 | % |
| Max Operating Frequency | 40 | GHz |
| Screening Effectiveness | >90 | dB |
| Dielectric Withstanding Voltage | 1000 | V DC |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz
Constants: K1 = 1.204032 | K2 = 0.001196918
| Frequency (MHz) | Nom. Attenuation (dB/100m) | Max Power Handling (W @ 40°C) |
|---|---|---|
| 500 | 27.52 | 637 |
| 1000 | 39.27 | 446 |
| 2400 | 61.86 | 283 |
| 3000 | 69.54 | 252 |
| 6000 | 100.45 | 175 |
| 8000 | 117.27 | 149 |
| 10000 | 132.37 | 132 |
| 12400 | 148.92 | 118 |
| 18000 | 183.08 | 96 |
| 26500 | 227.72 | 77 |
| 40000 | 288.68 | 61 |
Cross Reference & Form-Fit-Function Alternative
PS360L-40G-BF provides a direct form-fit-function alternative for industry-standard 0.142-inch high-frequency microwave cables. Ideal for test assemblies, radar subsystems, and satellite communication hardware requiring a 3.60mm outer diameter with lower attenuation than stranded-core equivalents.
Frequently Asked Questions
How does the solid conductor in PS360L-40G-BF compare to the stranded conductor in PS360LS-40G-F?
PS360L-40G-BF uses a 1/0.91 mm solid silver-plated copper inner conductor, whereas PS360LS-40G-F utilizes a 7/0.31 mm stranded conductor. The solid conductor reduces skin-effect resistance at millimeter-wave frequencies, resulting in roughly 18% lower attenuation at 40 GHz (288.68 dB/100m vs 354.39 dB/100m) and higher power handling (61W vs 42W @ 40GHz). However, the stranded ‘LS’ version offers superior mechanical flexibility for repetitive bending applications.
How does the LD-PTFE dielectric prevent phase variation across temperature extremes (-55°C to +125°C)?
Standard solid PTFE undergoes a non-linear crystalline phase transition around room temperature (~19°C), causing abrupt changes in phase velocity. The low-density microporous PTFE (LD-PTFE) used in PS360L-40G-F introduces controlled air volume into the matrix, lowering the dielectric constant (\approx 1.73 and effectively dampening phase shifts over wide thermal cycles.
Why is a dual shielding structure consisting of helical aluminium foil and outer SPC braid used?
The self-adhesive helical aluminium foil inner shield provides continuous 100% optical coverage to minimize high-frequency leakage, while the outer silver-plated copper (SPC) braid delivers high mechanical tensile strength and low DC resistance. This dual-layer shielding topology yields >90 dB screening effectiveness up to 40 GHz, preventing crosstalk in dense multichannel RF systems.
