Overview
ISO 19642-11:2023 is an international standard developed by ISO, specifically addressing the dimensions and requirements for coaxial radio frequency (RF) cables used in road vehicles. This standard is tailored for cables with a specified analogue bandwidth up to 6 GHz, and in special cases, up to 20 GHz. The cables covered are intended for use in vehicles with a nominal system voltage of up to 30 V a.c. or 60 V d.c., ensuring compatibility across a wide range of automotive RF communication systems.
This standard is part of the ISO 19642 series, which provides a cohesive set of guidelines for automotive cable specifications, testing, and performance requirements. The goal is to ensure robust, safe, and interoperable cabling in modern vehicles supporting advanced RF applications.
Key Topics
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Dimensional and Material Requirements:
The standard specifies core aspects such as:
- Conductor materials and diameters
- Dielectric insulation properties
- Screen construction (including the use of metallic braids and foils)
- Sheath materials and overall cable dimensions
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Performance Testing:
ISO 19642-11 outlines testing protocols based on ISO 19642-2, including:
- Electrical tests (e.g., conductor resistance, insulation faults)
- Mechanical tests (e.g., strip force, flexibility-where required)
- Environmental tests (e.g., heat shrinkage, flame propagation resistance)
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Cable Designation System:
A structured cable designation method is provided to ensure consistency in identifying and differentiating similar coaxial RF cables.
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Safety and Compliance:
Considerations for system voltage, temperature classes, chemical resistance, and resistance to flame and ozone are included to support both functional and safety requirements in automotive environments.
Applications
Coaxial RF cables addressed by ISO 19642-11 are critical for:
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Vehicle Communication Systems:
Used for high-frequency data and signal transmission, such as antenna connections, infotainment systems, and advanced driver-assistance systems (ADAS).
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Automotive Sensor Integration:
Enabling reliable connections for RF-based sensors required in modern vehicles, including radar and communication modules.
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Networked Vehicle Electronics:
Supporting data integrity and electromagnetic compatibility in the increasingly complex electronic systems present in current and future vehicle architectures.
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Special Cases:
The standard also accommodates cables for specialized applications requiring analogue bandwidths up to 20 GHz, enhancing its utility for cutting-edge automotive technologies.
Related Standards
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ISO 19642-1:
Covers automotive cable terminology and design guidelines, forming the foundation for the entire ISO 19642 family.
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ISO 19642-2:
Specifies test methods for automotive cables, referenced for testing provisions in Part 11.
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IEC 62153-4-3 and IEC 62153-4-4:
Provide metallic communication cable test methods, especially related to electromagnetic compatibility and screening effectiveness for RF cables.
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ASTM B452 & ASTM B105:
Define specifications for copper-clad steel and hard-drawn copper alloy wires used as conductor materials.
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CEN/TS 13388:
Specifies copper and copper alloy compositions relevant for automotive cable applications.
ISO 19642-11:2023 aligns with existing automotive cable standards, such as ISO 6722-1, ISO 6722-2, and ISO 14572, and is intended to supersede them as part of a systematic update to better meet current and future automotive RF cable requirements.
Keywords: ISO 19642-11, automotive coaxial RF cables, road vehicles, RF cable requirements, high-frequency cable, ISO automotive cable standards, coaxial cable specifications, cable testing, vehicle RF system, ISO 19642 series, automotive electronics.