In high-precision fields such as 8K ultra-high-definition display, medical endoscopic imaging, and smart wearable devices, the requirements for signal transmission are constantly increasing, while cables are moving towards smaller sizes and higher performance. Micro Coaxial Cable (extremely thin coaxial cable) has become a star product for high-frequency and high-speed applications thanks to its extremely small diameter, excellent signal integrity, and anti-interference ability. But how does this "hair-thin" cable achieve such low signal loss? Today, we will systematically analyze its technical advantages.
What is signal attenuation?
Signal Loss refers to the phenomenon where a signal gradually weakens during its transmission from the sending end to the receiving end, due to factors such as transmission materials, electromagnetic environment, and structural characteristics. In simple terms, it is the weakening of the signal during its "long journey," which may even result in distortion, delay, or failure to be accurately recognized.
Why does signal attenuation occur?
Common factors affecting signal attenuation include:
Conductor loss
Energy is lost during signal transmission in conductors due to resistance, and this is more pronounced in high-frequency signals.
Medium loss
When the signal passes through insulating material, due to the dielectric constant and loss factor of the material, some of the energy will be converted into heat and consumed.
Radiation loss
The signal leaks into the surrounding space in the form of electromagnetic waves, causing energy loss.
Reflection loss
When the impedance of the transmission line is inconsistent, the signal will produce reflection at the interface, part of the energy will be "bounced back", resulting in reduced effective signal.
Crosstalk issue
Electromagnetic coupling between adjacent cables can affect signal integrity, causing interference and distortion.
Why can Micro Coaxial Cable achieve ultra-low signal loss?
Optimized coaxial structural design
The coaxial structure inherently possesses excellent EMI suppression capabilities. The inner conductor is located at the center, surrounded by a complete shielding layer, which can effectively prevent signal leakage and reduce external electromagnetic interference from entering.
High-frequency low-loss insulating material
Micro coaxial cable commonly uses high-frequency insulating materials such as FEP, PTFE, etc. These materials have small dielectric constants and extremely low loss factors, which can significantly reduce the energy loss of signal transmission in the medium.
Triple Shielding: High-density weaving + metal foil
To further enhance the anti-crosstalk and anti-EMI performance, extremely fine coaxial cable bundles usually adopt a high-density tin-plated copper wire braided layer, combined with aluminum foil shielding, to achieve double-layer protection and ensure a purer signal path.
④ Precision manufacturing technology ensures consistency
The manufacturing process of extremely fine coaxial cable bundles requires high precision, including the concentricity of conductors, uniformity of insulation thickness, and shielding coverage. Through laser stripping, microspot welding, and automated coaxial cable assembly equipment, its performance can be ensured to be stable and consistent.
Micro Coaxial Cable can achieve ultra-low signal loss in extreme spaces by relying on:
Superior coaxial shielding structure
High-frequency low-loss insulating material
Dual-layer shielding anti-interference design
High stability brought by precision technology
Flexible cable solutions that can be customized according to application scenarios
Therefore, ultra-fine coaxial cable束 is becoming an indispensable key material for high-frequency and high-speed transmission.
We have been focusing on the design and customization of high-speed cable harnesses and ultra-thin coaxial cables for a long time, committed to providing stable and reliable high-speed interconnection solutions. If you have any related needs or would like to learn more, please contact: Manager Zhang.
18913228573 (WeChat number).
