The meaning of miniature coaxial cable for new energy vehicle equipment

China [CN]

Introduction: Micro coaxial cable (MCA for short) is a smaller, lighter and more flexible variant of traditional coaxial cable, and is widely used in a variety of high-speed data transmission occasions.

Automotive application scope: Mainly reflected in the following aspects:

RF signal reception and transmission: Micro coaxial cable is mainly used for RF signal reception and transmission in automotive electronics, including wireless signal reception and transmission, data communication, image transmission, radar sensing transmission, etc. This cable has two concentric conductors, and the conductor and shielding layer share the same axis, which is suitable for high-frequency signal transmission.

Connecting vehicle equipment: Micro coaxial cable connectors are used to connect vehicle wireless communication equipment, satellite navigation systems, vehicle entertainment systems, etc. in automotive electronic systems. They can transmit high-frequency signals and have anti-vibration and anti-interference characteristics to ensure the stability and reliability of signal transmission.

Integration of power supply and signal transmission: In automotive applications, micro coaxial cables can also be used to transmit power and front and rear channel signals at the same time. For example, in advanced driver assistance systems (ADAS), deserializers send power and control signals through coaxial cables, and serializers also send video signals back through the cable. This design can simplify the system structure and reduce costs.

Dealing with voltage offset and voltage drop problems: In the automotive power supply system, the battery may produce a wide voltage offset as low as 3V during cold start operation and reach 42V under clamped load dump or other transient conditions. To ensure the normal operation of the system, the deserializer voltage needs to be increased to at least 9V before transmitting PoC, and the voltage needs to be adjusted back to the operating voltage used by the serializer and image sensor after the power is delivered to the serializer side.

In short, micro coaxial cable has broad application prospects and important application value in the automotive field. With the continuous development of automotive electronic technology, micro coaxial cable will be used in more fields.

The traditional coaxial cable structure includes an inner conductor and a conductive shielding layer around it. Most coaxial cables are also equipped with a protective outer sheath. The cable is popular in the automotive field for its durability and excellent anti-interference performance. FAKRA (the abbreviation of Fachkreis Automobil), a global connector standard, has been adopted by automotive original equipment manufacturers (OEMs) for more than two decades as the standard for full-size coaxial cables. For more information about automotive cable products, please visit: https://www.omgevcable.com/Cases