PS930L-12.4G High Frequency Low Loss Phase Stable Coaxial Cable
Ultra-Low Insertion Loss & Exceptional Phase Stability Rated Up to 12.4 GHz
Engineered for high-frequency RF systems, the PS930L-12.4G features expanded LD-PTFE dielectric insulation, solid 2.44 mm silver-plated copper inner conductor, and triple shielding structure for maximum signal integrity, phase stability during flexure, and superior power handling performance.
Max Frequency:DC12.4 GHz
Screening: >90 dB
Phase Stability ：±0.2 °/GHz
Outer Diameter:12.0 mm
Structure & Construction Characteristics
| Layer | Element | Material | Construction (mm) | Nom. O.D. (mm) |
|---|---|---|---|---|
| Inner Conductor | Center Conductor | Silver Plated Copper | 1 / 2.44 | 2.44 |
| Dielectric | Insulation | LD-PTFE | – | 7.30 |
| Inner Shield | Flat Ribbon Shield | Silver Plated Copper Strip | – | 7.54 |
| Interlayer | Barrier Tape | High Temperature Aluminium Foil | – | 7.67 |
| Outer Shield | Braided Shield | Silver Plated Copper Wire | – | 8.19 |
| Jacket | Outer Sheath | Light Blue FEP | – | 9.30 |
Mechanical & Environmental Parameters
| Min. Static Bend Radius | 47.00 mm | Min. Dynamic Bend Radius | 94.00 mm |
|---|---|---|---|
| Weight | 0.194 kg/m | Operating Temperature | -55°C to +200°C |
Electrical & Mechanical Characteristics
| Impedance | 50 Ω | Capacitance | 88 pF/m |
|---|---|---|---|
| Velocity of Propagation | 76% | Max Operating Frequency | 12.4 GHz |
| Screening Effectiveness | > 90 dB | Dielectric Withstanding Voltage | 3500 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 = 0.44608, K2 = 0.0006
| Frequency (MHz) | Nominal Attenuation (dB/100m @ 25°C & Sea Level) | Max Power Handling (W @ 40°C & Sea Level) |
|---|---|---|
| 100 | 4.52 | 5,985 |
| 300 | 7.91 | 3,422 |
| 500 | 10.27 | 2,633 |
| 1000 | 14.71 | 1,840 |
| 2000 | 21.15 | 1,279 |
| 3000 | 26.23 | 1,031 |
| 6000 | 38.15 | 709 |
| 8000 | 44.70 | 605 |
| 10000 | 50.61 | 535 |
| 12000 | 56.07 | 483 |
| 12400 | 57.11 | 474 |
Cross Reference & Direct Equivalent Replacement
The PS930L-12.4G low loss phase stable coaxial cable is engineered as a direct drop-in replacement for Times Microwave SFT393, delivering matched 12.4 GHz high-frequency capability, identical mechanical dimensions (9.30 mm outer diameter), and equivalent phase stability under flexure.
Frequently Asked Questions
What advantage does the 2.44 mm solid inner conductor provide in high-power 12.4 GHz transmissions?
The single solid 2.44 mm silver-plated copper conductor offers lower DC resistance and superior current density distribution at X-band and Ku-band frequencies compared to stranded cores. This ensures maximum RF power transmission efficiency (handling up to 474W @ 12.4 GHz) while maintaining stable attenuation behavior over prolonged continuous wave (CW) power exposure.
How does the 47.00 mm minimum static bend radius influence system installation density?
With a compact 9.30 mm overall diameter and 47.00 mm tight static bending radius, PS930L-12G facilitates high-density cable routing in constrained airborne avionics and mobile radar chassis without risking dielectric compression, impedance discontinuities, or degradation of the 50 Ω nominal impedance.
How do the attenuation constants (K1=0.44608, K2=0.0006) help in system link budget calculations?
The dual-coefficient equation isolates skin-effect conductor losses (K1) from dielectric dissipation losses (K2). RF system engineers can precisely predict line loss at non-standard intermediate operating frequencies up to 12.4 GHz, allowing exact link budget verification for sensitive satellite telemetry and electronic countermeasure (ECM) assemblies.
