Product Overview

Flexible Low Loss Cable

Flexible Low Loss Cables are advanced coaxial cables engineered to minimize signal attenuation (loss) and maintain signal integrity across a broad range of frequencies, even in applications requiring frequent flexure or tight bends. Unlike standard coaxial cables, these high-performance cables utilize specialized dielectric materials and shielding constructions, such as DynaCore® PTFE dielectric technology as seen in Aptiv's DynaFlex® Cable Series, to significantly reduce signal degradation. Their inherent flexibility makes them ideal for dynamic applications, short-run connections, and complex routing within compact electronic systems, ensuring optimal performance in critical RF and microwave applications.

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Features and Benefits

  • Lower Attenuation: Minimizes signal loss, especially at higher frequencies, for improved system efficiency.
  • Excellent Phase Stability: Maintains consistent electrical length and phase even when bent, crucial for sensitive applications like phased array antennas.
  • Broadband RF & Microwave Performance: Operates across wide frequency ranges (DC to 40 GHz and beyond) for diverse applications.
  • High Flexibility & Durability: Withstands repeated bending and movement without compromising performance.
  • Space & Weight Savings: Allows for tighter bend radii, easier routing, and up to 40% weight reduction.
  • Superior Shielding Effectiveness: Multi-layered shielding prevents external interference and minimizes RF leakage.
  • Reduced Rework Costs: Robust core designs protect against damage, reducing field failures and maintenance.

Specifications, Parts, and Filters

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Impedance
Typically 50 Ohms
Frequency Range
Varies by cable series and diameter (e.g., DC to 50 GHz for Dynawave's DynaFlex® DF 100 and DF 400 series).
Attenuation (Insertion Loss)
Lower than standard flexible coax, ranging from a few dB/100ft at lower GHz to tens of dB/100ft at higher GHz (e.g., Dynawave's DF226: 39.92 dB/100ft up to 26 GHz).
Velocity of Propagation (VP)
High (70-85%), indicating faster signal speed (e.g., Dynawave DF218 at 84%).
VSWR
Very low across the operating band due to excellent impedance matching.
Shielding Effectiveness
High (>90 dB) to prevent signal leakage and interference.
Capacitance
Typically 25-30 pF/ft (e.g., Dynawave DF418 at 27 pF/ft).
Voltage Rating
Hundreds to thousands of VRMS, varying by cable size and construction.

Inner Conductor
Solid or stranded, silver-plated copper clad steel or copper.
Dielectric
Advanced low-density PTFE (Polytetrafluoroethylene), often foam or DynaCore®.
Outer Conductor/Shield
Multiple layers, including bonded aluminum foil and braided silver-plated or tin-plated copper.
Jacket
FEP, ETFE, or UV Resistance Polyurethane for protection and flexibility.
Outer Diameter
Various diameters for power handling and flexibility.
Minimum Bend Radius
Specified for single installation and repeated flexure.
Weight
Lighter than semi-rigid cables; DynaFlex® Cable 300 Series offers up to 40% weight savings.
Tensile Strength
Withstands pulling forces during installation and operation.

Temperature Range
Wide operating range, from -40°C or -65°C up to +85°C or +165°C.
Thermal Shock
Resistant to rapid temperature changes.
Vibration & Shock
Maintains integrity under vibration and shock.
Moisture Resistance
Robust jackets and sealed constructions for humid or outdoor use.
UV Resistance
UV-stabilized jackets for outdoor exposure.
Chemical Resistance
Some jackets resist oils, fuels, and chemicals.
Flame Retardancy
FR jackets available for indoor/plenum applications.

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