RF transmission lines are used to convey radio frequency signals from one point to another—typically between a transmitter or receiver and an antenna. Understanding the basic principles of coaxial transmission lines is essential for achieving optimal performance. A vector network analyzer (VNA) can be employed to assess the condition of a cable, and some common diagnostic measurements will be outlined here.

Agenda:

What is a coaxial cable and how does it work?

How do signals propagate in a cable?

How do you measure a cable with a VNA?

Return Loss and VSWR

What is characteristic Impedance?

What is a Time Domain Measurement?