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## ELECTROMAGNETIC FIELDS

CODE 80127 2022/2023 12 cfu during the 2nd year of 9273 INGEGNERIA ELETTRONICA E TECNOLOGIE DELL'INFORMAZIONE(L-8) - GENOVA ING-INF/02 Italian GENOVA Annual AULAWEB

## OVERVIEW

The Electromagnetic Fields course 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.

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### AIMS AND LEARNING OUTCOMES

The course 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.

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### TEACHING METHODS

The course includes theoretical lessons and classroom exercises.

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### SYLLABUS/CONTENT

Essential contents: Review of coordinate systems and vector operators. Electromagnetic field vectors and their sources (charges and currents). Maxwell's equations in global and local forms. Constitutive equations for dielectrics. Ohm's law. Interface, boundary and initial conditions. Continuity equation. Lorenz force. Harmonic fields. Complex dielectric permittivity and magnetic permeability. Poynting's theorem, conservation of energy, power density. Ideal and uniform transmission lines. Characteristic impedance. Load impedance. Reflection coefficient. Stationary waves. Distributed-parameter circuits (and comparison with lumped-parameter circuits). Wireless electromagnetic propagation. Wave equations. Electromagnetic waves. Plane and spherical waves. Polarization of the waves. Reflection and transmission of plane waves from plane surfaces. Normal and oblique incidences. Propagation in conducting media. Propagation in good conductors. Propagation and attenuation constants. Electromagnetic radiation. Near-field and far-field regions. Electromagnetic potentials. Radiation vector. Radiation from simple sources. The example of the elementary dipole. Antennas parameters. Radiation pattern. Gain and gain functions. Directivity and directivity patterns. Input impedance. Radiation efficiency. Receiving antennas. Equivalent area and its relationship with the gain. Introduction to finite length dipoles and parabolic antennas.

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1) S. Ramo, J. R. Whinnery, T. Van Duzer, "Fields and waves in communications electronics", Franco Angeli Editore, 1984.
2) G. Franceschetti, "Electromagnetic fields", Boringhieri, 1983.
3) G. Conciauro, L. Perregrini, "Fundamentals of electromagnetic waves," McGraw-Hill 2003.
Notes prepared by the teacher are also available.

## TEACHERS AND EXAM BOARD

### Exam Board

MATTEO PASTORINO (President)

MIRCO RAFFETTO

ANDREA RANDAZZO

ALESSANDRO FEDELI (President Substitute)

## LESSONS

### LESSONS START

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

### Class schedule

All class schedules are posted on the EasyAcademy portal.

## EXAMS

### EXAM DESCRIPTION

The exam consists of an oral test at the end of the lessons.

### ASSESSMENT METHODS

Since the exam is constituted only by an oral exam, the students will have to answer questions from the examination board concerning both the theoretical aspects presented during the course and the contents of the classroom exercises.

### Exam schedule

Date Time Location Type Notes
11/01/2023 09:30 GENOVA Orale
26/01/2023 09:30 GENOVA Orale
16/02/2023 09:30 GENOVA Orale
07/06/2023 09:30 GENOVA Orale
30/06/2023 09:30 GENOVA Orale
19/07/2023 09:30 GENOVA Orale
07/09/2023 09:30 GENOVA Orale