Coaxial cable is a transmission media, which is a medium that connects the sender and receiver of information (data), with respect to long distances. This coaxial cable functions to connect the transmitter with an antenna. With this coaxial cable, the data is converted into code / signal first, and this signal will be manipulated in various ways to be converted back into data.
The term coaxial cable is more widely known because it is easy to work on and there are many on the market. An important parameter of a coaxial cable is its impedance, which is expressed in ohms. In a coaxial cable, there are two conductors, one in the middle which is called the inner and the other around the middle conductor which is called the outer. This outer will be connected to ground when used.
The coaxial cable that is widely available in the market is known as the serial number RG8 / U with an outer diameter of 10.3mm and the serial number RG58A / U with an outer diameter of 5mm. Each has an impedance of 50 ohms.
This coaxial cable is also a type of cable that uses two conductors. This cable is widely used to transmit high frequency signals from 300 kHz and above. Because of its ability to transmit high frequencies, the transmission system using coaxial cable has a fairly large channel capacity. There are several types of coaxial cables, namely thick coaxial cables (having a large diameter) and thin coaxial cables (having a smaller diameter).
The use of this coaxial cable has advantages but also disadvantages, namely:
The advantages of a coaxial cable are that it can be used to transmit information up to 900 telephone channels, can be buried in the ground so that maintenance costs are lower, because using an insulation cover, there is little chance of interference with other systems.
The weakness of the coaxial cable is that it has relatively large attenuation so that for long-distance connections, repeaters must be installed, if the cable is installed above the ground, it is prone to physical disturbances that can result in disconnection.
This is a brief description or explanation of coaxial cable, hopefully it can add insight to those of you visitors to this blog.