PS760L-18G-P High Frequency Low Loss Phase Stable Coaxial Cable
Ultra-Low Insertion Loss & Exceptional Phase Stability Rated Up to 18 GHz
Engineered for high-frequency Ku-band and general microwave RF applications, the PS760L-18G-P combines an expanded LD-PTFE dielectric insulation, solid 2.10 mm silver-plated copper inner conductor, and a durable Blue PUR jacket to deliver superior phase stability during flexure, low signal attenuation, and long-term ruggedness..
Max Frequency:DC-18 GHz
Screening: >90 dB
Phase Stability ：±0.2 °/GHz
Outer Diameter:8.2 mm
Structure & Construction Characteristics
| Layer | Element | Material | Construction (mm) | Nom. O.D. (mm) |
|---|---|---|---|---|
| Inner Conductor | Center Conductor | Silver Plated Copper | 1 / 2.10 | 2.10 |
| Dielectric | Insulation | LD-PTFE | – | 6.10 |
| Inner Shield | Flat Ribbon Shield | Silver Plated Copper Strip | – | 6.42 |
| Interlayer | Barrier Tape | High Temperature Aluminium Foil | – | 6.54 |
| Outer Shield | Braided Shield | Silver Plated Copper Wire | – | 7.05 |
| Jacket | Outer Sheath | Blue PUR | – | 8.20 |
Mechanical & Environmental Parameters
| Min. Static Bend Radius | 38.00 mm | Min. Dynamic Bend Radius | 76.00 mm |
|---|---|---|---|
| Weight | 0.127 kg/m | Operating Temperature | -55°C to +200°C |
Electrical & Mechanical Characteristics
| Impedance | 50 Ω | Capacitance | 88 pF/m |
|---|---|---|---|
| Velocity of Propagation | 78% | Max Operating Frequency | 18 GHz |
| Screening Effectiveness | > 90 dB | Dielectric Withstanding Voltage | 3000 V DC |
| Phase Change vs. Bending | ±0.2 °/GHz | Phase Change vs. Temperature (-45~+85℃) | ≤ 1500 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation: IL = K1 * sqrt(F_MHz) + K2 * F_MHz [dB/100m]
Constants: K1 = 0.5382111, K2 = 0.000591
| Frequency (MHz) | Nominal Attenuation (dB/100m @ 25°C & Sea Level) | Max Power Handling (W @ 40°C & Sea Level) |
|---|---|---|
| 300 | 9.50 | 2,908 |
| 500 | 12.33 | 2,240 |
| 1000 | 17.61 | 1,569 |
| 2000 | 25.25 | 1,094 |
| 3000 | 31.25 | 884 |
| 6000 | 45.24 | 611 |
| 8000 | 52.87 | 523 |
| 10000 | 59.73 | 462 |
| 12400 | 67.26 | 411 |
| 16000 | 77.53 | 356 |
| 18000 | 82.85 | 333 |
The PS760L-18G-P low loss phase stable coaxial cable is engineered as a direct drop-in replacement for Times Microwave SFT205 / SFT-205, delivering matched 18 GHz high-frequency capability, identical mechanical dimensions (8.20 mm outer diameter), and equivalent phase stability under flexure.
Frequently Asked Questions
What operational advantages does the Blue Polyurethane (PUR) jacket provide compared to standard FEP sheathing?
The PUR (Polyurethane) jacket outer sheath delivers superior resistance to mechanical abrasion, repeated drag-and-flex cycles, fluid contamination, and tear damage during field deployment. This makes PS760L-18G exceptionally well-suited for rugged outdoor interconnects, tactical communications, and mobile test assemblies where physical durability is critical.
How does the 78% velocity of propagation (Vp) optimize phase delay in Ku-band phased-array antennas?
A higher velocity of propagation (78%) reduces electrical delay time per meter of cable. In Ku-band (up to 18 GHz) beamforming networks and phased-array radar feeds, this ensures faster signal transmission and tighter phase-matching tolerances, reducing overall thermal phase drift across wide environmental sweeps.
Can PS760L-18G-P maintain phase tracking accuracy under tight-radius flexure in mobile tactical systems?
es. Featuring a 38.00 mm static and 76.00 mm dynamic minimum bend radius, the combination of a helically wrapped silver-plated copper ribbon shield and LD-PTFE insulation suppresses radial cross-section deformation during movement, guaranteeing a phase change vs. bending within ±0.2 °/GHz all the way to 18 GHz.
