RF Cable Types
Coaxial Cable
- Comprises one centre conductor and two outer braided conductor separated by an insulating dielectric
- The most common type of cable used in these assemblies, primarily for lower frequency and lower cost applications
- Can use any standard RG-specification cable
Triaxial Cable
- Comprises one centre conductor and two separate outer braided conductors
- Adds increased shielding capabilities
Twinaxial Cable
- Comprises one separate centre conductors and one outer braided conductor
- Primarily used for networking applications
Flexible Semi-Rigid Cable
- Comprises one centre conductor and a two-stage outer conductor. There is an overlapping stiff metal spiral around the dielectric, which is then covered by a braided outer conductor
- These can be formed by hand and will hold their shape
- Lower cost alternative to the formed semi-rigid cable, whilst maintaining most of the semi-rigid benefits
- Suitable for high frequency applications
Semi-Rigid Cable
- Comprises one centre conductor and an inflexible outer conductor
- Must be formed by machine to ensure the outer conductor is not damaged
- Suitable for the highest frequency applications
- Once formed, holds its shape permanently
