In the era of rapid development of high-definition and ultra-high-definition display technology, resolutions such as 4K and 8K are gradually entering people's daily lives. Whether it's ultra-large-sized TVs, VR headsets, high-end medical imaging systems, or car central control screens, their picture quality performance cannot be separated from the support of high-performance signal cables. Among various cable products, the **micro coaxial cable** stands out for its thinness, softness, strong anti-interference ability, and high-speed transmission characteristics, making it the preferred connection solution for high-end display devices. So here's the question——Can the micro coaxial cable really transmit 4K/8K high-definition signals? Let's take a look together.
What is high-definition signal?
So-called "high-definition signal" refers to video/audio signals with high resolution, high frame rate, and high color depth. Compared with traditional standard-definition signals, high-definition signals have clearer images, more detailed information, and more realistic colors.
The current mainstream standards include:
4K ultra-high-definition: 3840 × 2160 pixels
8K ultra-high-definition: 7680 × 4320 pixels
In addition, high-definition signals are usually accompanied by higher frame rates (such as 60Hz, 120Hz) and higher color depths (10bit/12bit), which put higher requirements on the cable's transmission bandwidth.
Example: Explain.
4K@60Hz video signal data rate is about 12Gbps
8K@60Hz video signal data rate can reach up to 48Gbps
Therefore, to transmit such high-speed and massive amounts of data stably, cables must have high bandwidth, strong anti-interference ability, and excellent signal integrity.
Can a very fine coaxial cable transmit 4K/8K high-definition signals?
Absolutely, and performed exceptionally well.
High bandwidth supports ultra-high-definition signal transmission
The data rate of a 4K@60Hz signal is about 12Gbps, while an 8K@60Hz signal reaches as high as 48Gbps. Extremely thin coaxial cables usually have a bandwidth of 6GHz to 12GHz, even higher, which is sufficient to meet the transmission needs of 4K/8K ultra-high-definition video.
Strong shielding structure ensures signal stability
The ultra-fine coaxial cables are usually made with tin-plated copper braiding or aluminum foil + braiding dual shielding structure, which can effectively resist external electromagnetic interference (EMI), reduce signal distortion, screen flicker, and screen flash issues, ensuring stable and clear images.
Low attenuation characteristic, more efficient for short-distance transmission
Within the application distance range of 0.5m to 3m, extremely thin coaxial cables can maintain extremely low signal loss, ensuring smooth and delay-free transmission of 4K/8K images.
Three, precautions for using ultra-fine coaxial cables to transmit high-definition signals
Although coaxial cables with extremely fine wires have excellent performance, the following points still need to be paid attention to in actual design and assembly:
Length control: UHD signals are sensitive to transmission distance, it is recommended to use within **≤3 meters** for the best effect.
Welding process accuracy is high: due to the thinness of the conductor, high-precision equipment must be used for terminal welding to ensure signal integrity.
Model selection matching: The corresponding cable model with the appropriate frequency grade should be selected according to the actual transmission bandwidth requirements (4K or 8K).
Micro coaxial cable, with its high-frequency bandwidth, excellent anti-interference capability, low signal loss, and flexible design, is fully capable of handling the task of transmitting 4K/8K high-definition signals. It is not only an ideal choice for internal wiring in ultra-high-definition display devices but is also becoming an indispensable key connection solution in high-end electronic fields such as VR, in-car imaging, and medical equipment.
I am Kunshan JieKangFu Precision Electronics. We have been focusing on the design and customization of high-speed signal cables and ultra-fine coaxial cables for a long time, committed to providing stable and reliable high-speed interconnect solutions for our customers. If you have any related needs or want to learn more, please contact: Manager Yin.
18913280527 (WeChat number). 
