With the rapid development of 5G communication, the Internet of Things, and intelligent terminals, the requirements for high-frequency and high-speed signal transmission of devices are continuously increasing. The extremely thin coaxial cable bundle (micro coaxial cable) has become an indispensable key component in high-frequency signal design due to its small size and excellent shielding performance. This article will provide a comprehensive guide to the high-frequency signal design of extremely thin coaxial cable bundles, starting from the key design points and combining with the leading I-PEX 20634-160T-02 connector.
Challenge of ultra-fine coaxial beam in high-frequency design
Extremely fine coaxial cables, with their minimal size advantages, are widely used in portable devices such as mobile phones, tablets, laptops, and so on. In high-frequency signal transmission, they must have excellent impedance matching and low crosstalk characteristics. The following aspects should be paid close attention to in the design:
• Shielding layer structure: Multi-layer shielding can effectively resist external electromagnetic interference.
Insulating materials: material selection directly affects signal stability and durability.
Line diameter control: Precise control of line diameter is the foundation for ensuring signal integrity.
The key design of ultra-fine coaxial bundle high-frequency signals
Impedance matching: Ensure that the cable has the same impedance as the connector to reduce signal reflection and loss.
• Shielding performance: adopts a multi-layer shielding structure to ensure signal purity.
Material selection: High-quality conductors and insulating materials can improve signal stability.
Flexibility and spatial adaptability: Fine cables need to have good flexibility to adapt to complex spatial layouts.
Signal delay and propagation speed control: By reasonably designing wire diameter and material, reduce time delay error, and ensure synchronous transmission.
Heat stability: High-frequency equipment generates heat, and the wire material must have good heat resistance to prevent performance degradation.
Connection reliability: the interface design must ensure the stability of long-term mechanical strength and electrical performance.
Three, I-PEX 20634-160T-02 connector introduction
I-PEX 20634-160T-02 is a high-performance ultra-thin coaxial connector from I-PEX's CABLINE®-CA series, designed specifically for high-speed signal transmission.
Main specifications and features:
Contact spacing: 0.4 mm, suitable for high-density wiring.
Needle count: Offer a variety of choices including 10, 12, 20, 30, 40, 50, and 60 needles.
• Compatibility with wire diameter: Supports ultra-fine coaxial cables with AWG #38 to #46.
Merged type: Horizontal insertion type, easy to install.
Mechanical lock buckle design: Prevents the connector from falling off or not fully fitting, improving stability.
Field of Application: Widely used in high-speed data transmission scenarios such as Thunderbolt™ 3 (20 Gbps/lane).
This connector adopts high-quality electroplating technology, providing excellent electrical performance and durability, and offering reliable interface protection for extremely thin coaxial cables. Reasonable impedance matching, excellent shielding, and the combination of high-quality connectors are the core elements for stable transmission of high-frequency signals.
We have been focusing on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses for a long time, committed to providing stable and reliable high-speed interconnect solutions. If you have any related needs or want to learn more, please contact: Manager Zhang.
18913228573 (WeChat number)。
