With the continuous pursuit of thinness and higher data transmission rates in electronic devices, micro coaxial cable has become an indispensable high-speed signal transmission solution for high-end laptops, high-definition cameras, drones, and medical equipment. However, during actual assembly and use, many engineers find that there are issues such as unstable signal transmission, increased interference, and even system malfunctions. This article will systematically analyze the five common causes of this phenomenon and focus on introducing the technical advantages of the industry-leading connector—I-PEX 20847-040T-01.
Five reasons for the instability of ultra-fine coaxial beam transmission
Connection pin is loose
Micro coaxial cables have extremely high requirements for the contact quality of connectors. Poor contact due to uneven plating, misalignment of PIN pins, and other factors can easily lead to signal loss and interference, which is more significant especially in high-frequency and high-speed signal transmission.
Recommended plan:
I-PEX 20847-040T-01 utilizes high-precision PIN pins and a stable plug-and-play structure to ensure contact reliability and meet the needs of high-frequency and high-speed transmission.
Cable bend radius too small
Although micro coaxial cable has good flexibility, if the bending radius is too small during installation, it is easy to damage the internal core structure, causing impedance mismatch and signal attenuation.
Suggestion:
Install with strict control of bend radius ≥ 5 mm to avoid excessive squeezing or twisting of the cable.
Insufficient performance masking
In complex electromagnetic environments, poor design of the shielding layer or inadequate grounding treatment can lead to signal interference, increased error rate, and waveform distortion.
Solution:
Choose a micro coaxial cable with excellent shielding effect and use it in conjunction with the I-PEX 20847-040T-01 connector. Its optimized grounding and full shielding design can significantly improve EMC performance.
Unstandardized installation process
Soldering defects and loose connections in the process will directly affect the stability of the wiring harness system. The welding and assembly of micro coaxial cable require extremely high standards for the environment, temperature control, and operational specifications.
Suggestion:
The production and assembly should be carried out by professional manufacturers with fine welding and precision assembly capabilities to ensure the reliability of each connection point.
Selection and matching failure
Connector and cable mismatch may lead to non-compliant interface dimensions or discontinuous impedance, causing transmission anomalies.
Recommended pairing:
I-PEX 20847-040T-01 is specially designed for 0.3 mm outer diameter micro coaxial cable, supports 40 Pin high-density arrangement, and can meet the high-speed signal transmission of 4K/8K high-resolution.
Section 2: I-PEX 20847-040T-01 Connector Advantage Analysis
Basic Information
I-PEX 20847-040T-01 is a plug housing component of the CABLINE® -VS II series, using a 40 Pin high-density structure.
Gold plating at the contact end with a 0.03 μm nickel underlayer ensures low contact resistance and excellent wear resistance.
Structure and Assembly Performance
Equipped with a horizontal insertion design with a spacing of 0.5 mm, the overall height is only about 1.2 mm, perfectly meeting the needs of slim and thin devices.
The pitch, housing, and positioning size tolerances are controlled within ±0.3 mm, suitable for high-precision automated assembly.
Signal and shielding performance
Utilizing I-PEX's exclusive ZenShield® full-shielding structure, equipped with a mechanical locking mechanism, it enhances EMI protection and connection stability.
The single channel speed supports high-speed protocols such as PCIe 5.0, USB4 Gen4, and Thunderbolt 5 (up to 32 Gbps/lane and above).
4. Cable Matching and Application Scenarios
Compatible with 40 AWG ultra-fine coaxial cables, it can be widely used in thin and light high-frequency application fields such as eDP, LVDS, camera modules, high-speed signal acquisition, laptops, drones, and VR/AR devices.
The instability of extremely thin coaxial cable bundles often originates from multiple factors such as poor contact, bending errors, or shielding defects. Only by choosing a performance-stable I-PEX 20847-040T-01 connector,配合high-quality cables and standardized assembly processes, can the stability and reliability of high-speed signal transmission truly be achieved.
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 to our customers. If you have any related needs or want to learn more, please contact: Manager Yin.
18913280527（WeChat number the same）。
