Unit SYSTEMS AND CIRCUITS FOR IOT

ELECTRONIC SYSTEMS AND SUBSYSTEMS FOR IOT

Code	A005896
CFU	6
Teacher	Luca Roselli
Teachers	Luca Roselli
Hours	48 ore - Luca Roselli
Learning activities	Caratterizzante
Area	Ingegneria elettronica
Sector	ING-INF/01
Type of study-unit	Obbligatorio (Required)
Language of instruction	ITALIAN
Contents	The Internet of Things (IoT) “eco-system” and its implications on the design, development and manufacturing of electronic systems enabling the creation of smart objects. Hints on the use of CAD (Keysight ADS) for the design of electronic systems and circuits. Non conventional materials for the manufacturing of electronics circuits (paper as a paradigm). Unconventional material implications on the design of electronic systems and circuits. RFID systems and sensors, chipless RFID, Harmonic RFID. RADAR sensors. RF energy harvesting systems and RF-DC converters Electronic systems based on distributed approaches over large surfaces “Large Area Electronics” Systems (LAE-Systems), Smart Surfaces (SS). Heterogeneous energy scavenging systems (RF, Thermal, solar, cynetic). Systems in Objects (SiO) or Embedded in Objects (ESiO). Wearable electronics.
Reference texts	L. Roselli, “Green RFID Systems”, Cambridge University Press 2014.
Educational objectives	The course represents the lending of the whole teaching route towards the design of analog electronic systems and circuits enabling the manufacturing of smart objects as the lowest physical layer of the IoT “eco-system”. The layer, in fact, able to acquire information from the environment and transfer it to the layers above. The main goal consists, hence, to provide students with the basic competences to face the study of electronic systems compatible with the constraints stated by smart objects and their functionalities in terms of costs, basic functionalities (sensing and transmission), autonomy, ambient compatibility, manufacturing process compatibility, life cycle. The main competences acquired will be related to: - circuit and system design paradigm shift - “non conventional material” use - working principles of communication systems “on demand” (RFID) - passive sensors - energy harvesting systems - new trade-off between cost and performance - adaptation of the use of the CAD to the design of circuits and systems for IoT - wearable electronics
Prerequisites	- Circuit theory fundamental laws (Ohm, Kirchhoff, Thevenin - indispensabile) - Electronic device modeling (linear models, non linear models for small and large signals) - indispensabile - High frequency circuit design basic principle (power matching, impedance transformation, guided propagation.) important - Awareness of basic concepts such as: gain, noise figure, saturation, stability. important.
Teaching methods	In the introducing phase, the course will be inserted in the evolutionary contest of the electronics, starting from the history of the electronics, passing by the analysis of the present state of the technology, till conceiving new scenarios and related challenges. The core of the course will follow mainly a top-down approach. It will start from a description of the IoT “eco-system” as an ambient where the electronic systems operate. After that the boundary conditions posed by the reference environment to the solution of technical and design problems will be defined. After that, some characterizing exemplifying systems and the related development will be described. Contextually, designing techniques and tools will be described, by means of a large use of examples inherited by the most recent scientific literature as well as from the research activity carried on in our laboratories in the last decade.
Other information	none
Learning verification modality	The evaluation of the student will be done by means of an interview. Such an interview will begin with the discussion about the results of a specific project committed to the student around the end of the first part of the course. After that the interview will concern, more generally the topic dealt with during the course.
Extended program	Presentation of the course Introduction – IoT and Smart Objects - Internet of Things (IoT) - the smart objects RFID Systems - Historical hints - demonstration of working - RFID system architecture - RFID system classification Chip-less RFID - Time Domain Response (TDR) - SAW - SAW tag - Frequency Domain Response (FDR) Harmonic RFID Systems - The dawn - one bit tracking sensor - Example of one bit crack sensor - Harmonic architecture with Wheastone bridge - subsystem description - analysis and limits - multi-bit systems with polarization modulation Radar and radar sensors - Direct reflection Chipless RFID vs radar - Effetto Doppler - Doppler radar sensor architecture - Block diagram - Functional blocks: - Analysis and design of structural blocks: - Oscillator - Branch-line - Mixer - Antenna Wireless Power Transfer: - Historical hints - Working principles - Characterization - Wireless Power Transfer NF-IPT: - IPT – “a bad transformer” - Coupling coefficient - Resonant systems Semi additive technologies Energy Harvestig: - Similarities and Synergies between WPT and EH - Energy sources - RF Energy Harvesting - Rectenna Wearable electronics: - Antennas for fabrics - “non-ohmic” contact example Smart surfaces: - Smart floor - Smart path - quasi optics - Energy Harvesting surfaces - Gaussian beam Energy Harvesting Industrial application of IoT Electronics: some examples from the technology transfer experience of the University of Perugia.
Obiettivi Agenda 2030 per lo sviluppo sostenibile

PASSIVE CIRCUIT DESIGN FOR IOT

Code	A005895
CFU	6
Teacher	Paolo Mezzanotte
Teachers	Paolo Mezzanotte
Hours	48 ore - Paolo Mezzanotte
Learning activities	Caratterizzante
Area	Ingegneria elettronica
Sector	ING-INF/02
Type of study-unit	Obbligatorio (Required)