Phase Stable Coaxial Cable Assemblies (DC to 110 GHz)

Our high-performance phase stable coaxial cables are engineered for demanding RF, microwave, and millimeter-wave (mmWave) applications where signal integrity, minimal phase change versus bending (Phase vs Flexure), and phase stability vs temperature are critical. Covering frequency ranges from DC up to 110 GHz, these cable assemblies offer low insertion loss, low VSWR, high shielding effectiveness (>90 dB), and extended flex life for field testing, radar systems, phased array antennas, and satellite communications.

Designed as direct drop-in equivalents for industry-standard series from Huber+Suhner, Gore, and Micro-Coax, we offer both standard lengths and custom RF cable assembly solutions built to your exact specifications.

Key Technical Features & Performance Advantages

• Superior Phase Stability vs Flexure: Utilizes advanced microporous LD-PTFE and solid PTFE dielectrics to achieve minimal phase drift (±0.2° ~ ±0.3°/GHz) under repeated bending.

• Phase Stability Over Temperature: Mitigates the “PTFE knee” effect, maintaining ultra-stable electrical performance across wide thermal ranges (-55°C to +125°C).

• Ultra-Broadband Coverage: Precision assemblies supporting DC to 18 GHz, 40 GHz, 67 GHz, and up to 110 GHz with minimal attenuation.

• High Shielding & Durability: Triple-shielded structures ensure >90 dB shielding effectiveness, wrapped in high-abrasion PUR, FEP, or armored jackets for harsh environments

Phase Stable Cable Selection Guide by Frequency Range

Choose the right phase stable RF cable assembly based on your required operating frequency, dielectric material, and phase performance:

Model / Series	Max Frequency	Dielectric Type	Phase vs Flexure	Key Applications
PS160L / PS150L / PS180 Series	67 GHz – 110 GHz	Microporous LD-PTFE / Solid PTFE	±0.2° ~ ±0.3° / GHz	mmWave testing, 110GHz analyzers, high-density modules
PS265L / PS310L / PS360L Series	40 GHz – 61 GHz	Low Density PTFE (LD-PTFE)	±3.0° @ 40GHz (360° wrap)	5G/6G R&D, satellite communications, laboratory test leads
PS420LS / PS500L / PS540L Series	25 GHz – 34 GHz	Solid PTFE / Low Density PTFE	High durability / Flexible PUR/FEP	Aerospace radar, dynamic flex applications, military RF
PS560L / PS760L / PS930L Series	DC – 18 GHz	Solid PTFE	Low VSWR (<1.25)	High power transmission, interconnects, general RF testing

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Cross Reference & Drop-in Equivalents

Looking for a drop-in equivalent or cost-effective replacement for industry-standard phase stable cables? Check our cross-reference compatibility below:

Industry Brand & Model	Our Equivalent Series	Form Factor & Features
HUBER+SUHNER Minibend-047 / Minibend-086L	PS160L / PS260L Series	Ultra-compact, flexible mmWave phase stable cable
Gore CXN3500 / CXN3449	PS360L / PS500L Series	Low loss, high phase stability over flexure & temperature
Micro-Coax FA147A	PS310L / PS400L Series	Triple-shielded, low attenuation phase matched leads
HUBER+SUHNER SUCOFLEX 126E	PS420LS / PS540L Series	Ruggedized test cable assemblies for harsh environments

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Frequently Asked Questions (Technical & Selection FAQ)

What is a phase stable coaxial cable and why is it necessary?

A phase stable coaxial cable maintains a constant electrical length (and phase response) when subjected to physical bending, twisting, or temperature fluctuations. Standard cables suffer from phase drift due to dielectric deformation, which distorts phase-critical measurements in phased-array radars, vector network analyzers (VNAs), and beamforming systems.

How does temperature affect phase stability in PTFE dielectric cables?

Standard Solid PTFE dielectrics undergo a phase transition (known as the “PTFE knee”) near room temperature (~19°C), causing abrupt changes in phase length. Our high-frequency series (such as LD-PTFE models) use microporous PTFE dielectrics to mitigate this phenomenon, providing a near-linear phase change over a wide thermal operating range (-55°C to +125°C).

Can these cable assemblies replace Huber+Suhner, Gore, or Micro-Coax cables?

Yes. Our phase stable cable series are designed as direct, drop-in replacements for major industry brands including Huber+Suhner, Gore, and Micro-Coax, matching mechanical bend radii, connector interfaces, and RF performance specs.

 How do I select the right phase stable cable for mmWave applications up to 110 GHz?

A: For frequencies above 67 GHz up to 110 GHz, selecting cables with microporous LD-PTFE dielectrics and ultra-small outer diameters (such as 1.5mm to 1.8mm) is essential to minimize insertion loss and maintain strict phase stability under tight bend radii.

 Are your phase stable cables fully compatible as Gore or Huber+Suhner replacements?

A: Yes. Our cable series match the electrical specifications, mechanical form factors, and connector interfaces (1.0mm, 1.85mm, 2.4mm, 2.92mm, SMA) of standard series like Huber+Suhner Minibend/SUCOFLEX and Gore CXN, providing a reliable, cost-effective drop-in alternative