PS180-100G 100 GHz Ultra-High Frequency Phase Stable Coaxial Cable
100 GHz Sub-THz Micro-Miniature Flexible Coaxial Cable
Engineered for ultra-high frequency test systems, millimeter-wave modules, and high-density probe cards operating up to 100 GHz. The PS180-100G incorporates a micro 1.80mm outer diameter with triple-layer shielding, ensuring tight bending performance and high Phase Stability vs. Flexure.
Max Frequency:100 GHz
Screening: >90 dB
Phase Stability ：±0.3 °/GHz
Outer Diameter:1.8 mm
Structure & Construction Characteristics
| Structure Layer | Item | Material | Construction (mm) | Nom. O.D. (mm) |
|---|---|---|---|---|
| Inner Conductor | Conductor Material | Silver Plated Copper | 1 / 0.29 | 0.29 |
| Insulation | Dielectric Material | Solid-PTFE | – | 0.95 |
| Inner Shield | First Shield | Silver Plated Copper Strip | – | 1.10 |
| Interlayer | Second Shield | High Temperature Aluminium Foil | – | 1.23 |
| Outer Shield | Third Shield | Alloy Wire Braid | – | 1.43 |
| Jacket | Outer Protective Layer | Green FEP | – | 1.80 |
| Mechanical & Environmental Parameter | Standard Value |
|---|---|
| Min. Bending Radius (Static) | 20.0 mm |
| Min. Bending Radius (Dynamic) | 40.0 mm |
| Weight | 0.047 kg/m |
| Operating Temperature Range | -55 °C to +125 °C |
Electrical & Mechanical Characteristics
| Electrical Parameter | Standard Value |
|---|---|
| Impedance | 50 Ohm |
| Capacitance | 94 pF/m |
| Velocity of Propagation | 70% |
| Max Operating Frequency | 100 GHz |
| Screening Effectiveness | > 90 dB |
| Dielectric Withstanding Voltage | 500 V DC |
| Phase Change VS Bending | ±0.3 °/GHz |
Attenuation & Power Handling @ 25℃ & Sea Level
Calculation Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz [dB/m]
Constants: K1 = 0.03613110 | K2 = 0.00001221
| Frequency (MHz) | Nom. Attenuation (dB/m @ 25℃) | Max Power Handling (W @ 40℃) |
|---|---|---|
| 500 | 0.81 | 100 |
| 1000 | 1.15 | 70 |
| 3000 | 2.02 | 40 |
| 6000 | 2.87 | 28 |
| 10000 | 3.74 | 22 |
| 16000 | 4.77 | 17 |
| 18000 | 5.07 | 16 |
| 26500 | 6.21 | 13 |
| 40000 | 7.71 | 11 |
| 67000 | 10.17 | 8 |
| 100000 | 12.65 | 6 |
Cross Reference / Equivalent ReplacementThe PS180-100G micro coaxial cable is engineered as a direct drop-in replacement for HUBER+SUHNER Minibend-047, delivering matched 100 GHz high-frequency capability, identical mechanical dimensions, and equivalent phase stability.
Frequently Asked Questions
How to mitigate VSWR spikes and higher-order mode resonance when terminating PS180-100G with 1.85mm (67GHz) or 1.0mm (110GHz) connectors?
At frequencies above 50 GHz, any microscopic air gap or mechanical step between the 0.29mm inner conductor and the connector’s center pin introduces severe capacitive discontinuities. To prevent VSWR degradation: (1) Ensure precise micro-stripping with tight dielectric cut tolerances (< 0.05mm); (2) Apply controlled axial pre-load during soldering/clamping to prevent inner conductor pistoning; (3) Verify that the connector transition region maintains a constant 50 Ohm geometric capacitance-to-inductance ratio.
With a 0.29mm center conductor and 1.80mm O.D., how does PS180-100G prevent mechanical stress fatigue during tight routing in probe cards?
Micro-coaxial cables under tight dynamic flexing risk inner conductor migration or shield flattening. PS180-100G employs a helically wrapped silver-plated copper tape as the primary shield under an alloy braid, creating a flexible structural constraint. This dual-layer helical/braid design absorbs shear stress during flexure, keeping phase variation within ±0.3 °/GHz while maintaining structural integrity even at static bend radiuses down to 20.0 mm.
Does PS180-100G suffer from the “PTFE Phase Knee” around +19°C in temperature-controlled test environments?
Solid PTFE dielectrics undergo a crystalline phase transition between +15°C and +25°C, which can cause non-linear phase steps. For precision 67 GHz / 100 GHz VNA measurement setups, PS180-100G undergoes thermal pre-conditioning and stress-relief anneals to smooth out phase slope discontinuities. For applications requiring strict phase linearity over wide thermal swings (-45°C to +85°C), system-level calibration routines or low-density PTFE variants can be provided.
How do environmental temperature shifts affect attenuation margins at 67 GHz and 100 GHz?
Cable attenuation increases with temperature due to inner conductor thermal expansion and copper resistivity change (approx. +0.39%/°C). At 100 GHz, nominal attenuation is 12.65 dB/m at 25°C. When operating near the maximum rating of 125°C, insertion loss can increase by up to 18-20%. Engineers designing sub-THz links must incorporate thermal loss compensation factors into their link-budget models.
