If possible, please answer the following questions.
1: What are the frequency characteristics of the LB3031A Injection Transformer when the phase difference is 5°?
2: What is the model number of the OPA driving the Injection Transformer?
3: What are the model numbers of the OPAs used in DA1, DA2, and DA3?
I would like to measure the loop gain using ADALM2000+Scopy.
Thank you in advance for your cooperation.