Learning objectives
The course aims at providing an in-depth understanding of the operation of non linear, autonomous circuits such as multivibrators and quasi sinusoidal oscillators. <br />
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The final part focuses on noise and filtering techniques for reducing its effects. <br />
Prerequisites
Fondamenti di Elettronica A, Fondamenti di Elettronica BC
Course unit content
<p> Autonomous circuits <br />
Stability of circuits including negative resistances. Large signal analysis, trajectories in the I-V plane, limit cycle oscillations. Application to the analysis of astable, monostable and bi-stable circuits. <br />
Quasi-sinusoidal oscillators: analysis by the describing function method. LC and RC oscillators. Stability of oscillation amplitude and frequency, quartz oscillators. Three points oscillators (Colpitts, Hartley,...) <br />
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<p>Noise and filtering <br />
Physical origins of noise: Johnson, shot, 1/f.Equivalent representations of a noisy two-port. Noise figure of an amplifier. Noise matching.Phase noise in oscillators. <br />
Techniques for S/N improvement. Continuous, time invariant filters. Active filter synthesis (Butterworth, Cebiceff). Inductance simulation using gyrators. Resistor simulation in SC filters. Gm-C filters.<br />
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Full programme
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Bibliography
<p>P.U. Calzolari, S. Graffi, “Elementi di Elettronica”, Zanichelli <br />
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<p>Teacher's notes.</p>
<p>Further reading: <br />
T.H.Lee The design of CMOS RF integrated circuits, Cambridge University Press </p>
Teaching methods
<p>Exercises Simple exercises are solved during the lectures. Homework. An experimental activity is developed in cooperation with the course of Sensors.<br />
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There is a single examination covering both the teaching modules of Electronics and instrumentation. The evaluation is based on homework (1/4), experimental activity (1/4), oral examination (1/2) <br />
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Assessment methods and criteria
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Other information
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