In fields such as drones, security monitoring, liquid crystal displays, tablets, ultra-thin laptops, and medical equipment, extremely fine coaxial cables (Micro Coaxial Cable) have become an important solution for achieving high-speed, high-density signal transmission within miniaturized devices. With the continuous increase in data transmission rates, people are increasingly concerned about how this type of cable achieves stable transmission and ensures signal integrity. Below, we will systematically analyze its working principle and key technologies.
How does an extremely fine coaxial cable bundle transmit signals?
A super-thin coaxial cable bundle is a compact cable specifically designed for high-frequency and high-speed signals, widely used in various thin or space-limited electronic devices. Its core advantage comes from the efficient electromagnetic control capability provided by the "coaxial structure".
The basic process of signal transmission is as follows:
Central Conductor
As the main signal path, it is responsible for carrying high-speed digital or analog signals.
Insulation layer
Isolate the central conductor from the outer shielding layer to prevent signal leakage and suppress interference conduction.
Shielding layer
Composed of metal foil and metal woven mesh, it effectively blocks external EMI and prevents cross talk between adjacent cables.
Outer sheath
For protecting the wire structure, enhancing flexibility and durability, and adapting to the repeated bending environment inside the equipment.
Reliance on this "inner conductor-insulator-shielding-sheath" coaxial design allows for high-speed transmission of signals within the central conductor, while the shielding structure ensures that external noise does not interfere with data integrity, achieving stable high-speed transmission.
Why is signal quality the core of Micro Coaxial Cable?
In high-speed, high-density application environments, factors such as signal attenuation, crosstalk, impedance discontinuity, and reflection will seriously affect data reliability. Moreover, the internal wiring space of ultra-thin devices is limited, making them more susceptible to interference from other components. Therefore, Micro Coaxial Cable must have excellent shielding performance, impedance stability, and manufacturing accuracy to ensure high-speed transmission quality.
How does Micro Coaxial Cable ensure signal quality?
Multi-layer shielding structure design
The commonly used structure adopts a multilayer shielding combination of silver-plated conductors, high dielectric insulation, metal woven mesh, and metal foil.
Among
The higher the weaving density, the stronger the shielding effect.
Effectively block external EMI interference, ensuring stable high-frequency signals.
High-precision concentricity control
Strictly control the concentricity of the conductor and insulation layer during the manufacturing process to maintain consistent overall impedance and avoid signal reflection caused by local impedance jumps.
Precision impedance matching
Common impedance values are 50Ω / 75Ω.
Through strict control of structural dimensions and material ratios, the cable can maintain the standard impedance range, thereby reducing return loss (Return Loss).
Low-loss insulating material
Insulation layers usually select high-frequency materials such as FEP, ETFE, or PTFE, as they have low dielectric loss, which can significantly reduce signal attenuation.
Precision termination process
Micro Coaxial Cable is often terminated using laser welding, hot pressing welding, or precision connector technology to ensure consistent welding points and stable contact, thereby improving signal continuity from the source.
Micro Coaxial Cable can maintain excellent transmission performance in high-speed, high-frequency, and miniaturized applications, which is inseparable from the combined efforts of multi-layer shielding structure, high-precision manufacturing capabilities, low-loss materials, and professional termination technology. With the development of drones, high-definition surveillance, 8K display, and portable medical equipment, the performance requirements for ultra-fine coaxial cables will continue to increase, and their application scope will also continuously expand to more complex electronic systems.
We have been focusing on the design and customization of high-speed cable harnesses and ultra-fine coaxial cables for a long time, committed to providing stable and reliable high-speed interconnect solutions. If you have any related needs or would like to learn more, please contact: Manager Yin.
18913280527 (WeChat number)。
