Ultra-fine coaxial cable bundle analysis: The core interconnection solution for high-speed signals and thin structures

With the continuous evolution of consumer electronics and portable smart devices towards high-speed, miniaturization, and lightweight, internal connection harnesses need to balance transmission performance, structural flexibility, and miniaturization. Among various wire material solutions, extremely fine coaxial cables (Micro Coaxial Cable) stand out for their excellent shielding effect, high-speed transmission bandwidth, and excellent flexibility, making them a key wiring solution for products such as smartphones, tablets, camera modules, VR/AR devices, and more.
This article will provide a systematic introduction from aspects such as structural characteristics, types of transmissible signals, and performance advantages.

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What is a micro coaxial cable束？

Extremely thin coaxial cable bundles have a structure similar to traditional coaxial cables, consisting of a central conductor, insulating medium, shielding layer, and outer sheath, but with a very small diameter, commonly ranging from AWG 40 to 46, even finer. Despite their small size, their transmission performance is not reduced accordingly. On the contrary, with stable impedance, good shielding, and flexible bending properties, extremely thin coaxial cable bundles exhibit far superior performance to ordinary cables in high-speed interconnect applications.

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What signals can ultra-fine coaxial cables transmit?

2.1 High-speed digital signal

USB 3.x, Thunderbolt, and HDMI high-speed interfaces can achieve data transmission through extremely thin coaxial cable bundles. At 10Gbps, 20Gbps, and even higher bandwidths, it still maintains low loss, low crosstalk, and good signal integrity.

2.2 High-frequency radio frequency signal (RF signal)

Extremely thin coaxial cables can maintain stable performance in the GHz frequency band, commonly used in radio frequency systems such as antenna connections, 5G/6G modules, Wi-Fi devices, etc.; their shielding structure effectively reduces external electromagnetic interference.

2.3 Video and Image Signal

In the screen display module, high-speed video signals such as MIPI D-PHY, C-PHY, and LVDS are often transmitted through extremely thin coaxial cable bundles. Their high bandwidth and anti-interference capability make them meet the requirements for high-definition and high refresh rate images.

2.4 Power and Control Signal

In some cable designs, low-voltage power lines, control lines, and high-speed data lines are combined in the same cable bundle to achieve integrated wiring, improving the efficiency of internal structure utilization.

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Why can an ultra-fine coaxial beam support various signals?

3.1 Low attenuation and high-quality conductor

The central conductor is usually made of high-purity copper, silver-plated copper, and other materials, effectively reducing signal attenuation, making it suitable for high-speed links.

3.2 High shielding layer efficiency

Woven or covered metal shielding structures can effectively suppress electromagnetic interference and improve transmission stability.

3.3 High flexibility and toughness

The extremely thin coaxial cable bundle maintains stable performance under small bending radius, making it very suitable for devices with compact internal space and frequent bending.

Extremely fine coaxial cable束 has small volume, strong performance, and good flexibility. It excels in the transmission of high-speed digital, radio frequency, video signals, as well as composite transmission of power and control signals. It is one of the key technologies for modern electronic devices to achieve slimming and high-speed interconnection. With the continuous development of electronic devices towards higher bandwidth and smaller size, extremely fine coaxial cable束 will continue to play an irreplaceable and important role in many applications.

I amSuzhou Huichengyuan Electronic TechnologyLong-term focus on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, committed to providing stable and reliable high-speed interconnection solutions. For more information or to inquire about customization services, please contact:Manager Yin 18913280527 (WeChat same number)。