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Risorse bibliografiche
Risorsa bibliografica obbligatoria
Risorsa bibliografica facoltativa
Scheda Riassuntiva
Anno Accademico 2015/2016
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 096032 - ELECTRONICS
Docente Sottocornola Spinelli Alessandro
Cfu 10.00 Tipo insegnamento Monodisciplinare

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - MI (474) TELECOMMUNICATION ENGINEERING - INGEGNERIA DELLE TELECOMUNICAZIONI*AZZZZ096032 - ELECTRONICS
Ing Ind - Inf (Mag.)(ord. 270) - MI (486) ENGINEERING PHYSICS - INGEGNERIA FISICA*AZZZZ096032 - ELECTRONICS

Programma dettagliato e risultati di apprendimento attesi

 

Objective of the course

 

This is a course devoted to mastering techniques for signal recovery from noise in modern acquisition systems. In a blend of electronics, physics and signal processing we will study amplifiers, sensors and signal conditioning techniques, keeping an eye on both their physical/theoretical working principles and their real characteristics. Students are expected to gain skills on the design of relatively simple data acquisition systems and on the selection criteria of their various components.

 

Detailed program

 

Operation amplifiers (OAs): voltage and current amplifiers, input and output impedances. Negative feedback and application to amplifier design. Elementary linear stages and impedances. Real OAs: DC and AC parameters. Instrumentation amplifiers and CMRR. Frequency response of OA circuits, stability of the feedback loop and frequency compensation. Capacitive loading of OA stages. 

 

Sensors: signal readout from resistive sensors: single-ended and differential signals, Wheatstone bridge and balancing, 2-, 3- and 4-wire connections. Temperature compensation. Sensor generalities and parameters: resolution, linearity, sensitivity, offset, drift. Example of resistive sensors: strain gauges. Temperature sensors: RTD and thermistors, electrical and thermal circuits. Thermoelectric effects and thermocouples.

 

Noise: signals and noise in time and frequency domains. Autocorrelation and power spectral density. Thermal noise in resistors, Nyquist derivation. Shot noise and Poisson random process model. Flicker noise. Noise in linear circuits and OAs, equivalent input noise. Noise factor and figure, signal-to-noise ratio (S/N). Feedback and noise. 

 

Signal recovery: the case of white noise: low-pass and time-variant filters. Weighting functions. Gated integrators and improvement of S/N. Boxcar averagers and ratemeters. Discrete-time filters and their representation in the frequency domain. Comparison between continuous- and discrete-time filters. Optimum filtering.
The case of low-frequency noise: high-pass filters and effect on pulsed signals. Baseline restorers. Amplitude modulation and synchronous detection. Lock-in amplifiers, analog and digital LIAs.


Note Sulla Modalità di valutazione

Examination

Students are required to pass a written exam. Texts and solutions of previous examinations are available on the instructor’s website.


Bibliografia
Risorsa bibliografica facoltativaG. Clayton, S. Winder, "Operational amplifiers", Editore: Newnes,, Anno edizione: 2003, ISBN: 0750659149
Risorsa bibliografica facoltativaA. S. Sedra, K. C. Smith,, "Microelectronic circuits", Editore: Oxford Univ. Press, Anno edizione: 2009, ISBN: 0195323033
Risorsa bibliografica facoltativaT. H. Wilmshurst, "Signal recovery from noise in electronic instrumentation", Editore: Hilger, Anno edizione: 1990, ISBN: 0750300582

Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
60.0
esercitazione
40.0
laboratorio informatico
0.0
laboratorio sperimentale
0.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.6.5 / 1.6.5
Area Servizi ICT
20/06/2021