Understanding Cable Phase Stability

This video provides a short technical introduction to why cable phase stability is important and how the phase stability of coaxial cables is measured using vector network analyzers. Suggested video description links: Test and Measurement Fundamentals Playlist:    • Test & Measurement Fundamentals   Understanding Semi-Rigid Cables:    • Understanding Semi-Rigid Cables   Vector network analyzers from Rohde & Schwarz: https://www.rohde-schwarz.com/us/prod... Timeline: 00:00 Introduction 00:18 About ideal coaxial cables 01:03 About phase stability 02:16 Factors affecting phase stability 02:31 About phase stability and temperature 03:45 About the PTFE (or “Teflon”) knee 05:10 About flexion / flexure 06:31 Phase stability and flexion 07:36 Phase stability in test and measurement cables 08:50 Measuring phase stability as a function of temperature 09:34 Example measurement: phase variation vs. temperature 10:10 Measuring phase stability as a function of flexion 11:29 Flexion phase stability test methods 11:47 “Shake stability” 12:33 Reflection stability 13:28 Example measurement: phase variation due to flexion 14:10 Transmission stability 14:57 Summary