Hello everyone,
I am learning the feedback topologies for 2-port network as we have:
-basic amplifier that is represented by 2-port network.
-feedback amplifier that is also represented by 2-port network.
There is a reference is in the link : feedback topology page 20 and up.
My question why on earth did he choose for example for a loading(means there is RL) a Series-shunt feedback (Voltage-Voltage basic amplifier) a G model and not a Z model?

 

I do not recall that in any of the higher level feedback control courses that a feedback system was treated in this manner. Is this method better, or just more complex??

 

I do not recall that in any of the higher level feedback control courses that a feedback system was treated in this manner. Is this method better, or just more complex??

I cannot say much as it is the first time for me to see it and they use it very much in analog ic design

 

Feedback systems for the real world are analog, even if it is a digital implementation of analog.And analog feedback systems mostly use real components, and so it is often handier to use models that translate into real world values the easiest. At least that has been my reasoning over the years. BUT I have not designed a fully digital feedback system, only analog ones. I have, however, donr the startup adjustments for digital emulations of analog systems. There is always an issue with the coefficients of the several variable parameters that must be set, because of unusual scale factors.

 

Yes, I understand that. In the lecture I provided, it is about analogue integrated circuit. I wanted to learn how to apply it and why he is using it

 

In many instances, including this example, the tool selected is the one that the user is most familiar with and thus requires the least effort to obtain accurate results.