Topics Covered

• Group Delay Measurement Process
• Comparing the Measurements
• Measurement Challenges

Application Note Overview

Group delay measurements are crucial for identifying phase distortions in transmission channels, ensuring good signal quality. Vector network analyzers (VNAs) are commonly used to characterize group delay variations. However, an alternative method using spectrum analyzers and signal generators offers simplified setups and faster measurement speeds. This application note describes this set up, including its benefits and limitations. Plus the test results are compared to those from VNAs to give engineers a deeper understanding. By optimizing group delay, engineers can enhance signal fidelity in RF systems, making this technique essential for telecommunications and radar applications.