Date: Tuesday, February 22 2022
Location: Chip
Time: 10:45 - 12:30
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Amplifiers: modeling of power losses and energy storage
As all physical systems, amplifiers suffer from power losses and energy storage.
Presentation
The presentation “Amplifiers: power losses and energy storage” introduces high-level modeling techniques for such effects. It also briefly introduces a classification of amplifiers, based on the operation of the stage that drives the load.
Presentation in parts
Amplifiers: power losses and energy storage (parts)
Study
Chapter 2.4.4, 2.4.5
Amplifiers: voltage and current drive capability
The static and dynamic voltage and current drive capabilities of amplifiers are limited.
Presentation
The presentation “Amplifiers: voltage and current drive capability” gives description methods for these effects.
Presentation in parts
Amplifiers: voltage and current drive capability (parts)
Video
Amplifiers: voltage and current drive capability (5:37)
Study
Chapter 2.4.7, 2.4.8, 17.5, 17.7
Amplifiers: modeling of weakly nonlinear behavior
At signal levels below clipping, amplifiers will not behave perfectly linear.
Presentation
The presentation “Amplifiers: modeling of weakly nonlinear behavior” gives description methods for weakly nonlinear behavior.
Presentation in parts
The presentation “Amplifiers: modeling of weakly nonlinear behavior (parts)
Video
Amplifiers modeling of weakly nonlinear behavior (13:03)
Study
Chapter 17.5, 17.7
Dynamic nonlinear behavior of an amplifier.
Design of two-port model parameters (T1-matrix) for the active antenna (SLiCAP HTML report)
Discuss which combinations of the T1 matrix parameters can provide an accurate source-to-load transfer (E-field to voltage across the cable termination):
For each combination of parameters discuss:
Which T1 parameters should be zero.
What the values of the other parameters should be.
Further:
Create a circuit model using only controlled sources and passive components that has the desired parameters for each combination
Verify the values of the parameters with SLiCAP.
Verify the source-to-load transfer with SLiCAP.
