What kind of micro coax can truly run high-speed signals stably?

In the rapidly advancing field of high-speed, lightweight, and miniaturized electronic devices, the design of transmission harnesses has become one of the key factors for system stability. As signal rates become increasingly higher, the space available for devices becomes more compact. Traditional wiring often experiences issues such as speed loss, screen artifacts, and interference in high-speed scenarios. In comparison, micro coax (extremely thin coaxial cable) has gradually become the mainstream choice for high-speed signal transmission due to its advantages of low loss, strong shielding, and small size. However, not all micro coax cables can simultaneously meet the stringent requirements of high-speed, anti-interference, and small size.

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High-speed transmission requirements: low loss, stable impedance, high-end materials

In scenarios such as high-speed camera modules and AI edge devices, cables require excellent transmission performance to meet high bandwidth requirements.

The low-loss insulating material of micro coax can maintain good transmission performance above a few GHz, avoiding image delay or frame loss.

Impedance consistency is crucial for high-speed links; instability in impedance can cause reflections, just as sudden changes in the width of a highway can lead to traffic jams.

The high-end material structure (such as silver-plated copper conductors paired with low dielectric constant insulating layers) is equivalent to laying a stable and high-speed track for the data channel, allowing the signal to pass through quickly and smoothly.

High-speed transmission essentially involves reducing loss and maintaining consistency, and micro coax has a natural advantage in this aspect.

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Interference Resistance Requirement: Strong Shielding Structure and Proper Grounding

High-speed signal frequency is high and sensitivity is strong; slight interference will lead to a decline in link performance.

360°screening (weaving layer + foil layer) provides comprehensive protection for cables, preventing external electromagnetic noise intrusion.

The independent shielding structure ensures that each high-speed signal has an independent protective layer, reducing mutual interference.

The quality of grounding directly affects the shielding effect; poor grounding is like a blocked drainage ditch, and even the best shielding may be as good as nothing.

In complex electromagnetic environments, shielding and grounding are crucial for ensuring data integrity.

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Tiny volume requirements: extremely small outer diameter, flexibility, and high-density layout

In mobile phones, tablets, VR devices, etc., space is compact to the extent of millimeters, posing extreme requirements for wire sizes.

1. Micro coax outer diameter can be as small as 0.3 mm to 0.5 mm, as thin as a hair, yet it can carry dozens of Gbps of data.

Excellent flexibility allows cables to navigate around components in confined spaces, meeting folding and dynamic bending requirements.

When combined with small connectors and FPCs, it achieves high-density wiring and is an ideal choice for modern compact structural design.

Small volume not only means a smaller outer diameter, but also represents the ability to achieve higher signal density in a limited space.

Micro coax that can meet the requirements of high speed, anti-interference, and small size is no longer just the core component of the signal chain, but also the core component of the entire signal path. From materials, impedance, shielding to grounding and layout, it carries the stability of the system performance. With the continuous development of AI, 5G, ultra-clear display, and mobile devices, the application of high-performance micro coax will become more and more extensive and will become the standard configuration of more high-end devices.

I am[Suzhou Huichengyuan Electronic Technology], Focus on the customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses, committed to providing customers with reliable and stable high-speed interconnection solutions. Welcome to contact Manager Zhang:18913228573 (WeChat number)。