What are coaxial cables? Coaxial cables, which are in the class of weak current cables, are a special type of cable used to carry radio frequencies. To put it more clearly, these coaxial cables are used to carry very high frequency currents such as UHF or VHF, analog signals at very high frequencies, and considering that the coaxial cable changes the direction of the current millions of times per second, it is a very efficient cable type to use. There are many different types of coaxial cable.
Coaxial Cable Structure
In the innermost part of the coaxial cables, which consist of four materials inside each other as a physical structure, there is a cable line that carries the signal that we call live line, which consists of copper or other conductors, and there is an insulator surrounding this line.
In general, polyethylene (PE “polyethylene material has a very high electrical insulator, so external insulators made from this polyethylene material are used in areas with an average ambient temperature of -55 to +85 Cº.
are used”) or Teflon (PTFE) around this insulating material, there is a braid of conductors, also called thin leaf, and this existing braid is grounded. There is a protective sheath on the outermost part of the cable, which is the outer sheath, which provides the protection of the cable, and a material such as PVC is generally used. Here, at ambient temperature where the external insulators made with PVC are between -40 and +80 Cº
Considering that it is used easily, it makes coaxial cables a very durable cable.
There is a very important part here, which is; It is the grounding of the braided part of the coaxial cable consisting of conductors. The fact that this conductive braid is grounded is a very important detail in terms of allowing the cable to pass unaffected by the devices in the environment that create an electromagnetic field. On the other hand, this structure in the coaxial cables we have mentioned allows the cables to be more elastic compared to other cables of their own thickness, which is a very important feature.
