PS850L-18G Phase Stable RF Coaxial Cable
18 GHz High Frequency | Low Loss | Phase Stable Design
Engineered for demanding RF transmission up to 18 GHz, offering high power handling, low attenuation, high velocity of propagation (83%), and dependable phase stability under bending for microwave test and communication infrastructure.
Max Frequency: 18 GHz
Screening: >90 dB
Impedance: 50 Ω
Phase Stability: ±0.3°@18GHz
Structure & Construction Characteristics
| Structure Layer | Item / Parameter | Material / Spec | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Material | Silver Plated Copper | 2.39 |
| Construction | 19/0.48 mm | ||
| Insulation | Material | LD-PTFE | 6.35 |
| Inner Shield | Material | Silver Plated Copper Strip | 6.67 |
| Outer Shield | Material | Silver Plated Copper Wire | 7.20 |
| Jacket | Material | TPU | 8.50 |
Electrical Performance Parameters
| Parameter | Standard Value | Parameter | Standard Value |
|---|---|---|---|
| Impedance | 50 Ω | Capacitance | 80 pF/m |
| Velocity of Propagation | 83% | Max Operating Frequency | 18 GHz |
| Screening Effectiveness | > 90 dB | Dielectric Withstanding Voltage | 3000 V@DC |
| Phase Change vs. Bending | ±0.3 °@18GHz | Phase Change vs. Temp (-45~+85℃) | ≤ 750 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz
K1 Constant: 0.518199 | K2 Constant: 0.000544
| Frequency (MHz) | Attenuation (dB/100m) | Power Handling (W) |
|---|---|---|
| 300 | 9.14 | 2048 |
| 500 | 11.86 | 2048 |
| 1000 | 16.93 | 1105 |
| 2400 | 26.69 | 701 |
| 3000 | 30.02 | 624 |
| 6000 | 43.40 | 431 |
| 8000 | 50.70 | 369 |
| 10000 | 57.26 | 327 |
| 12400 | 64.45 | 290 |
| 15000 | 71.63 | 261 |
| 18000 | 79.32 | 236 |
Mechanical & Environmental Properties
| Parameter | Standard Value |
|---|---|
| Min Bending Radius (Static) | 36.00 mm |
| Min Bending Radius (Dynamic) | 85.00 mm |
| Weight | 0.162 kg/m |
| Operating Temperature | -55 ~ +85 ℃ |
Cross Reference Note: PS850L-18G serves as a direct high-power, low-loss replacement for standard 8.5mm / 0.335″ low-loss flexible phase-stable coaxial cables operating up to 18 GHz.
Frequently Asked Questions
What is the primary application of the PS850L-18G coaxial cable?
PS850L-18G is designed for high-power, high-frequency RF transmission up to 18 GHz, including radar equipment, high-power test interconnects, broadcasting systems, and microwave communication links requiring minimal attenuation.
What insulation material is used in PS850L-18G?
It uses Low-Density PTFE (LD-PTFE), which achieves a high velocity of propagation (83%) while maintaining low dielectric loss across the 18 GHz spectrum.
What are the main mechanical dimensions of PS850L-18G?
The cable features a 2.39mm (19/0.48mm) stranded silver-plated copper inner conductor, a 6.35mm LD-PTFE dielectric, and a durable 8.50mm TPU outer jacket, with a static min bend radius of 36mm.
