The secret to making radar "smarter": How ultra-fine coaxial beam guarantees stable high-frequency signal transmission

In today's continuous evolution of intelligent driving and autonomous driving technology, millimeter-wave radar has become an indispensable core component of the vehicle perception system. It achieves precise detection and distance measurement of the surrounding environment by emitting and receiving high-frequency electromagnetic waves such as 77GHz. To maintain stability and accuracy of the radar under various complex working conditions, the reliability of internal signal transmission is crucial, and the "key role" that cannot be ignored is the extremely thin coaxial cable (Micro Coaxial Cable).

The core function of the extremely fine coaxial beam
In millimeter wave radar modules, it is necessary to transmit high-frequency radio frequency signals and high-speed digital signals at high speed. Any slight interference or reflection in the signal chain will lead to a decrease in the radar's detection accuracy. The application of extremely fine coaxial cable bundles is precisely to solve these problems:
High impedance consistency: Ensures that the signal between the radar chip and the antenna module remains intact during transmission, reducing reflection and distortion.
Low-loss transmission: It can effectively suppress signal attenuation at high frequencies such as 77GHz, ensuring stable output of radar ranging and identification performance.
3. Compact and lightweight structure: wire diameter is typically between 0.3mm and 0.5mm, which is very suitable for the miniaturization design requirements of vehicle radar, saving space for internal structure layout.

Adaptation to the challenges of complex vehicle-mounted environments
The vehicle radar needs to operate for a long time under extreme conditions, facing challenges such as high temperature, low temperature, vibration, and strong electromagnetic interference. The ultra-fine coaxial cable bundle, designed with high flexibility insulation material and a high-density shielding layer structure, can not only flexibly route in limited spaces but also effectively enhance the anti-interference capability.
No matter in heavy rain, snowfall, or complex driving environments such as tunnels and night driving, the wiring harness ensures stable transmission of radar signals, making the detection results more accurate and reliable, thereby enhancing the overall safety performance of the autonomous driving system.

Three, future development trends
With the iterative upgrades of intelligent driving technology, the requirements for signal transmission quality of millimeter-wave radar are also continuously improving. The future ultra-fine coaxial cable bundles will develop in the following directions:
Smaller diameter: to meet the trend of further miniaturization of radar modules.
Higher frequency band support: to provide support for higher resolution and longer detection range.
Improved shielding performance: Reduce external interference and ensure signal purity.
These technical optimizations will continue to make ultra-fine coaxial cable assemblies a key component in enhancing radar performance, providing higher safety guarantees for advanced driver-assistance systems (ADAS).
Extremely thin coaxial cables are the core foundation of high-speed signal transmission within millimeter-wave radar systems. In invisible corners, they quietly ensure the stable operation and precise detection of radar systems, becoming the true "invisible hero" in the intelligent driving safety system.

I am[Suzhou Huichengyuan Electronic], focusing on the research and development and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, committed to providing customers with high stability and high reliability high-speed interconnection solutions. If you have relevant needs or want to learn more, please contact:Manager Zhang 18913228573 (WeChat same number)。