The Various Categories Of Coaxial Cable

The coaxial cable was invented in 1929. But the commercial use until 1941. Coaxial cable consists of round, cylindrical-shaped wires covered by a spacer, a cylinder shaped jacket which in turn is surrounded by an insulating jacket. Coaxial cable is basically an electric cable and serves on the transfer of high-frequency signals. The electromagnetic field is generated between the inner and the outer conductor. It is therefore less interference from external electromagnetic fields. This type of cabling for industries such as cable TV and networking. Coaxial cable is a little more expensive than ordinary telephone wiring. However, it is preferred because it allows maximum transmission of data and information with the least interference.

These cables are generally of two types-flexible and rigid. Rigid cable consists of solid type of jacket and flexible cable consists of braided type coat made of copper. The inner insulator (or dielectric) will affect the cable properties, such as attenuation and impedance. RF connectors are used to connect the ends of coaxial cables. Dielectric can be solid or perforated with small holes.

The RF connector is a short and a rigid type of cable with the same impedance as the cable with which it is associated. However, the dielectric may not be identical. The connectors with high quality are usually coated with gold, but lower quality cables are coated with nickel. Silver is also (but only in cases of high-end connections) as its conductivity is really good. Silver plating usually requires additional coating because of its oxidation in the air.

A complete list of the various types of coaxial cable, see category5-cable.com/plenum-cat-5.html and are summarised below:

Hard Line - These are the mighty cable with rigid outer shield, and with minimal loss. Normally used to connect a transmitter and an antenna. These cables consist of high dielectric in the high temperature as well.

Tri axial - cable, with three layers of shielding and shielding the outermost to protect the inner layers from external electromagnetic interference.

Twin axial - This cable consists of a twisted pair, in a shield.

Bi axial - consists of two 50O coaxial cable used for networking.

Semi rigid - it is a coaxial cable with solid outer mantle copper.

Short kind of coaxial cables are generally for the home video, radio-ham and some small computer networks, while long coaxial cable to connect radio or TV networks. Micro-coaxial cables are from the military or medical use.

Micro coaxial cables used in a number of devices, military equipment and also in ultra-sound scanning. The cable impedance of 50/52 and 75 ohms are often used. 50/52 ohm cables are normally used for commercial purposes, while 75 ohm cable used for domestic purposes.



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