In today's era of high-speed signal transmission, the requirements for data transmission are constantly increasing, whether it is for PCs, laptops, in-car display systems, or high-end medical equipment. To balance high-density arrangement with high-speed signal integrity, ultra-thin coaxial cables (Micro Coaxial Cable) are gradually becoming the mainstream solution. Especially in scenarios such as LCD screen interfaces and camera modules, where signal quality is of the utmost importance, how to achieve excellent anti-interference capabilities in cables with only a 0.3mm diameter has become a key concern for design engineers.
This article will take the HTK LVC-D20LPMSG+ connector as an example, to deeply understand why ultra-fine coaxial cables should adopt a multi-layer shielding structure, and its important significance in high-speed transmission systems.
An Analysis of Multilayer Shielding Structure of Extremely Fine Coaxial Lines
Standard ultra-fine coaxial cables usually have a four-layer shielding structure, with each layer having its unique function and design logic:
Insulator: Wraps the inner conductor, providing electrical insulation and signal isolation, commonly made of FEP or PFA.
2. The first layer shield - foil shield: mainly resists high-frequency electromagnetic interference (EMI).
3. Second layer shield - Braided shield: More effective against medium and low frequency interference, while also providing mechanical strength and bending resistance.
4. Jacket: Provides overall abrasion resistance and physical protection.
This multi-layer structure not only achieves high-density signal transmission but also effectively maintains signal integrity, enabling cables to have better anti-interference capabilities in high-speed applications.
Why must extremely thin coaxial cable bundles be multi-layer shielded?
In high-speed transmission systems, electromagnetic interference (EMI) and crosstalk are the two most common signal threats. In the process of operation, extremely thin coaxial cables are highly susceptible to radiation interference from peripheral components such as the mainboard, power module, LCD driver circuit, and so on. If shielding is insufficient, the following problems may occur:
Image signal jitter or flicker, resulting in an unstable screen.
The error rate of the high-speed interface rises, causing data transmission to be interrupted.
The EMI index exceeds the standard, and the whole machine cannot pass the certification test.
Therefore, the use of multi-layer shielding design (such as foil layer + weaving + drain line) can effectively reduce interference coupling paths, improve the electromagnetic compatibility (EMC) of cables, and significantly enhance signal quality and data stability.
HTK LVC-D20LPMSG+ - A high-density connection solution tailored for extremely thin coaxial cable assemblies
HTK LVC-D20LPMSG+ is a super-thin high-performance connector specially designed for ultra-thin coaxial cables, featuring multiple technical advantages such as 0.5mm spacing, low profile structure, and pulse hot-press welding process, and is widely used in high-speed LCD interfaces, notebook mainboards, and medical imaging equipment.
Main features include:
Each pin supports 50V AC / 0.3A electrical performance;
Low-profile structural design, saving PCB wiring space.
Optimize the signal path to reduce latency and jitter.
Adopting pulse hot pressing welding technology to avoid overheating damage to extremely fine coaxial cables.
The LVC-D20LPMSG+ in conjunction with a multi-layer shielded AWG#40 ultra-fine coaxial cable can achieve stable transmission capabilities of up to several Gbps, significantly enhancing the system's EMC performance and signal synchronization, making it an ideal connection solution for high-end displays and in-vehicle equipment.
In the era of high-speed signal transmission, extremely thin coaxial cables, multi-layer shielding structures, and professional connectors have become a key combination for ensuring signal integrity and system stability. HTK LVC-D20LPMSG+ has been widely used in high-end LCD displays, medical terminals, vehicle-mounted display systems, and other fields, thanks to its excellent electrical performance and compact design, providing more reliable high-speed interconnection solutions for equipment.
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Suzhou Huichengyuan Electronic TechnologyLong-term focus on the design and customization of high-speed cable harnesses and extremely fine coaxial cables, committed to providing stable and reliable high-speed interconnection solutions. If you have any related needs or want to learn more, please feel free to contact:
Manager Yin 18913280527 (WeChat number the same)。
