In this video, I discussed the basic theory behind a tracking generator and built a tracking generator for the tinySA Ultra using an external mixer. You can check out my blog post on this topic for the information presented in this video also I shared some thoughts on suitable external mixers towards the end: http://www.kerrywong.com/2023/07/08/m...

00:00 Filter measurement without a tracking generator
02:52 Principle of operations of a tracking generator
04:54 LO, IF characteristics of the tinySA
10:51 Tracking generator with external mixer, filter testing
15:50 Verification using LiteVNA, conclusions

Building A Tracking Generator for the HP 8566B:    • Building A Tracking Generator  
http://www.kerrywong.com/2016/01/10/b...
tinySA Ultra Spectrum Analyzer Review/Experiments/Teardown:    • tinySA Ultra Spectrum Analyzer Review...