What are the signal transmission advantages of very thin coaxial lines? Why use welded connectors?

In the lvds wire harness industry, as long as it involves high-definition signal transmission and high shielding effect requirements, the wire harness will basically use extremely thin coaxial lines, which use HotBar equipment for welding processing, and the joints at both ends.

In the lvds harness industry, as long as it involves high-definition signal transmission and high shielding effect requirements, the harness is basically used very thin coaxial line, which uses HotBar equipment for welding processing, and the joint at both ends is basically a welded connector type. What are the advantages of using a very thin coaxial line?

Signal transmission characteristics are affected by several parameters, including, for example, impedance, insertion loss, return loss, and crosstalk. Here are some of the main reasons why extremely thin coaxial lines are generally considered to have signal transmission advantages at high speed signal transmission.

Reduce return loss:

The very fine coaxial line of the central conductor, the insulator and the outer conductor are well matched, and the performance is stable under the specific impedance. Matched and stable impedance produces low return loss.

Reduce insertion loss:

Compared to FPC/FFC, the extremely fine coaxial line guarantees a larger cross-sectional area of the center conductor when matching a specific impedance, thereby minimizing insertion losses.

Improved shielding performance:

The outer conductor acts as an electromagnetic shield, so the electrical signal transmitted on the central conductor is less susceptible to electromagnetic waves (electromagnetic noise) from outside. In addition, the shielding effect of the outer conductor helps reduce crosstalk between signals.

?The welded connector has a small pitch distance and a precise structure, in which the metal parts have a good shielding effect to reduce the factor of signal interference, and the advantage of the coaxial line can greatly improve the transmission rate and high-definition signals, which are widely used in the field of liquid crystal display equipment. Such as around the common 4K and 8K high-definition TV, laptop computers, high-definition cameras, security monitors are more common.?