How fast can a very thin coaxial cable transmit? Comprehensive Analysis of Micro Coaxial Cable's High-Speed Performance

In high-speed interconnection and precision electronic equipment, micro coaxial cable has become an indispensable signal channel. It is renowned for its small diameter, high flexibility, and strong shielding performance, and is widely used in fields such as medical probes, camera modules, industrial automation, AI acceleration cards, and high-performance computing systems. With the continuous increase in data transmission speed, the performance of micro coaxial cables also faces new challenges and breakthroughs. So, what is the maximum transmission speed it can support?

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One, technical characteristics of ultra-fine coaxial cables

The most significant advantage of ultra-fine coaxial cables lies in their unique coaxial structure. Internally, they are wrapped in layers of a central conductor, dielectric layer, shielding layer, and outer jacket, forming a highly stable electrical performance transmission channel. This design performs particularly well in high-frequency signal transmission, effectively reducing crosstalk and electromagnetic interference (EMI), ensuring signal integrity. Compared with traditional parallel wires or flat cables, micro coaxial cables exhibit superior performance in Gbps-level high-speed communication, especially suitable for systems requiring high-speed, low latency, and anti-interference capabilities. Their diameter typically ranges from 0.2mm to 0.5mm, greatly saving space and allowing flexible wiring in high-density modules without sacrificing performance.

 

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Part Two: Performance of Mainstream Products

Currently, mainstream ultra-thin coaxial cable products have reached astonishing levels of transmission speed:

1. Mainstream high-performance micro coaxial system, capable of stably supporting a single channel rate of up to 32Gbps, meeting the needs of high-definition video, MIPI interfaces, and high-speed storage.

High-end products with optimized structure and materials, with a speed increased to 40Gbps to 64Gbps, commonly used in AI computing platforms, 5G communication equipment, and high-bandwidth image acquisition systems.

In the cutting-edge field, some ultra-fine coaxial technologies have already achieved 112Gbps PAM4 signal transmission, enabling the total system bandwidth to reach the Tbps level, meeting the needs of PCIe 5.0/6.0 and data center-level interconnects.

This series of performance jumps reflects the potential and maturity of micro coaxial cable in dealing with new generation high-speed data applications.

 

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Three, key factors affecting rate

The speed limit of extremely fine coaxial cables is not solely determined by the material, but rather the result of the combined effect of multiple factors:

Conductor and medium materials: High-purity conductors and low-loss mediums help reduce signal attenuation and reflection.

2. Shielding Structure: Multi-layer shielding can significantly reduce external interference and ensure stable high-frequency signal transmission.

Connector technology: High-speed transmission not only depends on the cable itself, but also on the insertion loss and return loss control of the matching connector.

4. System environment: High-speed signals are limited during transmission by PCB trace length, interface matching, and system architecture design, making overall optimization crucial.

In summary, the performance of the micro coaxial cable is a collaborative achievement of design, materials, technology, and system engineering.

Now, the transmission capability of ultra-fine coaxial cables has been upgraded from the initial few Gbps to 32Gbps, 64Gbps, and even beyond 100Gbps. With the vigorous development of 5G communication, artificial intelligence, and high-performance computing, the demand for high-bandwidth, high-density, and low-interference signal transmission will continue to grow. In this trend, micro coaxial cable is not only the carrier of physical connections but also a key bridge in the era of high-speed interconnection, providing stable and efficient data channels for precision electronic equipment.

I amSuzhou Huichengyuan Electronic Technology Co., Ltd., long-term focused on the design and customization of high-speed cable harnesses and ultra-fine coaxial cables, committed to providing reliable high-speed interconnection solutions. If you have related needs or want to learn more, please contact:Manager Zhang 18913228573 (WeChat same number)。