09-03-2020: Electronics¶

Date: Monday, March 09 2020

Location: EWI-DATA

Time: 10:45 PM - 12:30 PM

color coded resistors

Demonstrations¶

Conflict between input impedance and noise in the classic, passive feedback, inverting voltage amplifier.

Noise behavior of negative feedback amplifiers¶

Download the poster “Application of Negative Feedback”

Noise performance of feedback amplifiers

In general, insertion of impedances in series and/or in parallel with the signal path should be avoided. They increase:

Energy storage and power losses
Noise

Presentation

The presentation “Influence of Feedback Networks on Noise Performance of Negative Feedback Amplifiers” shows that detrimental effects caused by impedances in the feedback networks can be kept low.

Video

Noise behavior of negative feedback amplifiers (19:42)

Study

Chapter 7.4, 7.5

Determine noise budgets for the controller and the feedback network of a passive feedback voltage amplifier with SLiCAP¶

View the results SLiCAP results
Download the SLiCAP files

Discussion homework¶

Estimation of poles and zeros in passive networks and how to check your results with SLiCAP.
- View the results SLiCAP results
- Download the SLiCAP files
Selection of the feedback configuration for the active antenna, SLiCAP files: SLiCAP-EE3C11-3.zip

Homework¶

Derive budgets for the equivalent-input noise sources for the controller of the active antenna for the selected feedback configuration.
Verify your results with SLiCAP.