Fine coaxial cable wiring difficulties and optimization points in VR/AR equipment

With the rapid development of VR/AR technology, head-mounted devices put forward higher requirements for internal wiring. Whether it is high-resolution display signals or real-time data from various sensors, a high-speed, low-loss transmission method is needed. And completing wiring in a compact space is a core difficulty in design.

Space-limited and bending design
The internal structure of VR/AR devices is dense, and the wiring space is extremely limited. Although the diameter of the extremely thin coaxial cable is usually only within the range of 0.3～0.5mm, the actual wiring still requires strict control of the bending radius. Once the bending is excessive, it may cause impedance changes, thereby affecting signal integrity, leading to attenuation or distortion.

Electromagnetic Compatibility and Signal Stability
The head-mounted display device integrates various electronic units such as display modules, cameras, and position tracking sensors, which have a strong electromagnetic interference risk among the modules. Although extremely thin coaxial cables have a good shielding structure, under high-density wiring conditions, it is still necessary to reduce crosstalk through reasonable path planning and spacing arrangement to ensure the real-time and stable transmission of data and images.

Dynamic service life under dynamic use
VR/AR headsets are accompanied by frequent head movements when worn, and the internal cables need to withstand repeated bending over a long period. Ultra-fine coaxial cables are more flexible than soft ribbon cables and have greater mechanical toughness, but they may still experience metal fatigue or sheath破裂 under continuous dynamic loads. How to balance flexibility and durability in wiring planning is a key factor in ensuring product lifespan.

4. Assembly Requirements and Modular Thinking
The termination of extremely thin coaxial cable bundles involves multiple complex processes and requires high precision in welding and assembly equipment. By adopting a modular cable assembly solution, not only can the consistency of mass production be improved, but it can also reduce assembly difficulty while maintaining high reliability, thus enhancing overall manufacturing efficiency.

Ultra-fine coaxial cable harnessing in VR/AR devices is a process of seeking a balance between "high-performance transmission" and "miniaturized structure." To achieve stable and high-speed data transmission while ensuring the reliability of the device over a long period of use, it is necessary to comprehensively optimize multiple aspects such as materials, layout, shielding structure, and manufacturing processes.
I am[Suzhou Huichengyuan Electronic Technology], deeply engage in the research and development of high-speed cable harnesses and ultra-fine coaxial cable harnesses, providing high-reliability interconnection solutions for various equipment. If you are looking for professional support, please contactManager Zhang 18913228573 (WeChat same number)We are always ready to provide you with technical assistance.