OVERVIEW

The Electromagnetic Fields unit provides basic electromagnetic skills, including the fundamental laws of the electromagnetic field and the principles of propagation and diffusion, necessary for the understanding of information technologies.

AIMS AND CONTENT

LEARNING OUTCOMES

The course provides basic electromagnetic skills. The goal is to enable the student to be able to evaluate the electromagnetic aspects involved in electronic design, as well as acquire the necessary fundamentals for the study of antennas, guided propagation and electromagnetic compatibility.

AIMS AND LEARNING OUTCOMES

The unit provides basic electromagnetic skills, which concern the fundamental laws of electromagnetism, the basics of electromagnetic propagation and radiation. These contents, fundamental in the field of Information Engineering, are discussed in the light of their applicability to practical engineering problems. The goal is to put in a position to be able to evaluate the electromagnetic aspects involved in electronic design and in the study of equipment based on information technologies, as well as acquire the necessary fundamentals for the study of antennas, guided propagation and electromagnetic compatibility. At the end of the unit the student will have understood and will be able to describe the fundamental concepts of electromagnetics in vacuum and in matter. Moreover, he/she will be able solve simple electromagnetic problems that allow to foresee some important applicative implications in terms of radiation, free and guided propagation, and electromagnetic compatibility.

TEACHING METHODS

The unit includes theoretical lessons and classroom exercises. Attendance is recommended

SYLLABUS/CONTENT

Essential contents – Newtonian, relativistic and quantum physics. Differential operators of interest and related theorems. Macroscopic electromagnetic fields in the presence of matter: electrical conduction, electrical polarization and magnetic polarization. Fundamental equations of the electromagnetic field in the presence of matter. Constitutive relations. Behavior of fields on discontinuity surfaces. Extension of the energy conservation law to electromagnetic phenomena: Poynting's theorem. Extension of the linear and angular momentum conservation law to electromagnetic phenomena. Uniqueness theorems for electromagnetic fields. Electromagnetic waves: wave equation, wave equation in one spatial dimension, plane and uniform electromagnetic waves, spherical waves (outline), plane electromagnetic waves in sinusoidal regime, polarization of plane waves, power associated with plane waves. Propagation of plane waves in lossy media: propagation and attenuation constants, penetration depth. Propagation of plane waves in presence of dielectric discontinuities: normal and oblique incidence on flat surfaces. Solution of wave equations in homogeneous media: electromagnetic potential method. Electromagnetic radiation: near field and far field, radiation from simple sources (elementary dipole). Other fundamental principles (outline): principle of duality, principle of electromagnetic images. Ideal and uniform transmission lines: distributed parameter representation, equivalent circuit, characteristic impedance, input impedance, reflection coefficient, standing waves, matching. Examples of transmission lines. Non-ideal transmission lines (outline).

RECOMMENDED READING/BIBLIOGRAPHY

1) S. Bobbio, E. Gatti, “Elementi di elettromagnetismo”, Bollati Boringhieri, 1991.
2) G. Franceschetti, "Electromagnetic fields", Boringhieri, 1983.
3) G. Conciauro, L. Perregrini, "Fundamentals of electromagnetic waves," McGraw-Hill 2003.
Notes prepared by the teachers are also available.

TEACHERS AND EXAM BOARD

Exam Board

ANDREA RANDAZZO (President)

ALESSANDRO FEDELI

MIRCO RAFFETTO (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/9273/p/studenti-orario

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

The exam is oral and consists of several questions, of which at least a theoretical one and at least one formulated as an exercise.

ASSESSMENT METHODS

At the end of the unit students will have to show that they have understood the basic concepts of electromagnetics in the presence of charges in vacuum or matter, and that they are able to solve problems of limited complexity in this context.

Exam schedule

FURTHER INFORMATION

Students who have valid certification of physical or learning disabilities on file with the University and who wish to discuss possible accommodations or other circumstances regarding lectures, coursework and exams, should speak both with the instructor and with Professor Federico Scarpa (federico.scarpa@unige.it ), the School's disability liaison.