What is a coaxial cable?

A coaxial cable is a cable consisting of a central conductor surrounded by an outer conductor in a cylindrical shape, with an insulator between them. It is widely used for transmitting RF signals.
Advantages of using coaxial cables
·Low loss: Electromagnetic waves are confined within the cable, allowing signals to be transmitted over long distances.
·Resistant to noise: The outer conductor shields the cable from external electromagnetic waves, making it less susceptible to noise interference.
·Signal degradation is minimized: The uniform structure ensures a consistent characteristic impedance, preventing signal degradation caused by electromagnetic wave reflection or distortion.
Types of coaxial cables
·50Ω cable: The most commonly used type.
·75Ω cable: Used for television broadcast video signals, etc.
Applications of coaxial cables
·Television
·Video equipment
·Mobile communications
·Satellite communications
·Medical equipment
·Measuring instruments
Coaxial cables are an essential technology for transmitting RF signals. Understanding their structure and characteristics enables their effective use in various applications.