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Feedback and Noise in Electronics

2E2AB1 Feedback and Noise in Electronics Electronics and Applied Physics S8
Lessons : 0 h TD : 17 h TP : 9 h Project : 0 h Total : 26 h
Co-ordinator : Chantal Gunther
Prerequisite
1E1B1 - Basic Circuits & electronics measurements
1E2AC1 - Amplifier, ADC & DCA
2E1AB1 - Pre-amplification & Filtering
Course Objectives
This course develops a basic understanding of the fundamentals and principles of feedback loops (negative and positive feedback and shows the application in practical examples. It also covers the stability of the amplifier chain and the topologies of sinusoidal oscillators.
Syllabus
Feedback and effects on Input & Ouput impedances of amplifiers, closed-loop gain, bandwidth, distorsion and noise.

Stability of Feedback Amplifiers

Quasi-sinusoidal and relaxation oscillators: internal structures, characteristic parameters and applications of these circuits.
Practical work (TD or TP)
Realization of printed circuit board (PCB) of a magnetic track guided mobile robot where the electromagnetic field produced is produced by an electric current flowing through a cable.

The design and realization of the PCB will be conducted over two semesters (2E1AB1 Pre-amplification and Filtering, 2E3AA1 & 2E2AB2 - Electronic project)

The functional blocks included on the PCB should give the engine position and speed set-points.
The realization of a functional block enabling the creation of a sinusoidal signal that flow through the cable will also be achieved.

Electrical functions to be performed: detection of the electromagnetic field, amplification, filtering, generation of a sinusoidal signal, power amplifier.
Acquired skills
Optimal selection of existing integrated functions adapted to a specific problem, ....otherwise: characterization of the desired function.

Choice of component for the adequacy of its characteristics to the specifications of the given application.

Project management : from the functional diagram to the realization and the characterization of the prototype.
Bibliography
Analysis and Design of Analog Integrated Circuits, Paul R. Gray, Robert G. Meyer, John Wiley & Sons, Inc.
Microelectronic Circuits, Adel S. Sedra and Kenneth C. Smith, Oxford University Press.

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