In co-axial cable, there are two conductors sharing a common axis. A center conductor is a solid copper wire or stranded wire. An outer conductor forms a tube surrounding the inner conductor. This conductor consists of braided wires, metallic foil, or both. The outer conductor is called the shield. This serves as a ground and protects the inner conductor from EMI. An insulator layer keeps the outer conductor spaced evenly from the inner conductor. A plastic jacket protects the cable from damage.
There are two types of co-axial cables:
- Thin net (thin, flexible, and inexpensive)
- Thick net (thick, hard, and expensive)
