- Docente: Alessandra Costanzo
- Credits: 6
- SSD: ING-INF/02
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Cesena
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Corso:
Second cycle degree programme (LM) in
Electronics and Telecommunications Engineering for Energy (cod. 8770)
Also valid for Second cycle degree programme (LM) in Electronics and Telecommunications Engineering for Energy (cod. 8770)
Learning outcomes
At the end of the course, the student knows the tools for the analysis and design of circuits and subsystems representing the building blocks of RF and microwave front-ends. She/he will also know the nonlinear effects at the base of front-end operation and the CAD tools to accurately take them into account during front-end design. The student learns the methods to achieve front-end energy autonomy through the exploitation of received radio waves, therefore avoiding the use of batteries, with great advantages for the environmental impact. The student will also acquire knowledge of possible applications in the field of RF and microwave identification (RFID) and RFID-enabled sensors for environment control.
Course contents
Functional blocks of radiofrequency (RF) wireless systems and main nonlinearities of their operating functions, and tools for their analysis and design.
Analytical methods for the characterization of nonlinearities in sinusoidal and multi-tone regime: frequencies generation, saturation, AM-PM conversion, frequency conversion, and nonlinear distortion.
Circuit model of nonlinear devices for power generation (transmitter side) and for RF-dc conversion (receiver side): MESFET and DIODES.
Harmonic Balance method and introduction to commercial simulation tools for RF circuit analysis/design. Hints on electromagnetic software tools. Main network functions definition for circuital performance evaluation of RF systems. In particular, the efficiency of an entire link for Wireless Power Transfer (WPT) is considered, and its different contributions are described from both a circuital and a systemistic point of view. Analyis and design of WPT subsystems both radiative (far-field) and non-radiative (near-field)
Near-field techniques
Inductive and capacitive couplings: design of the wireless link and efficiency definition
Electromagnetic modelling of coils and corresponding analysis of the performance
Scheme and design of the transmitter and the receiver
Far-field techniques
Energy harvesting from environmental sources and intentional wireless power transmission
Main characteristics of the antennas to be adopted
Possible schemes for the receiving power systems. Different rectenna (rectifying antenna) topologies
The final part of the course is devoted to the study of:
- some systems for near-field power transfer for wearable or implantable devices
- Rectennas for wide-band energy harvesting from the environment (far-field)
Readings/Bibliography
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D. Pozar, Microwave engineering, 4th Edition, Wiley
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Slide delle lezioni
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Articoli selezionati tratti dalla letteratura specializzata
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"Wireless Power Transfer - Principles and Engineering Exploration", Ki Young Kim, InTech
Teaching methods
Lectures with slides
- There will also be: i) some intermediate test activities (not subject to evaluation); ii) some laboratory classes for electromagnetic/circuit simulation training for the creation of simple models for rectennas characterization
Assessment methods
Oral exam on both theoretical and laboratory parts
Teaching tools
Lectures with slides
- There will also be: i) some intermediate test activities (not subject to evaluation); ii) some laboratory classes for electromagnetic/circuit simulation training for the creation of simple models for rectennas characterization
Office hours
See the website of Alessandra Costanzo