Unit ELECTROMAGNETIC FIELDS
- Course
- Computer science and electronic engineering
- Study-unit Code
- 70A00066
- Curriculum
- Ingegneria elettronica
- Teacher
- Cristiano Tomassoni
- Teachers
-
- Cristiano Tomassoni
- Hours
- 81 ore - Cristiano Tomassoni
- CFU
- 9
- Course Regulation
- Coorte 2020
- Offered
- 2022/23
- Learning activities
- Caratterizzante
- Area
- Ingegneria elettronica
- Academic discipline
- ING-INF/02
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- Transmission lines
Resolution of transmission line equations. Progressive waves and stationary waves. Line characteristic parameters. Smith's Chart: Applications.
Basic Equations and Theorems of Electromagnetism
Call: scalar and vector fields; Vector operators; Phasor method
Fundamental equations: electromagnetic field; Maxwell equations; Constituent relations; Principle of duality; Boundary conditions; Problem classification e.m .; Electrostatic and magnetostatic.
Electrodynamics: Poynting theorem, physical interpretation; Complex vectors, polarization; e.m. Field and power in complex notation; Maxwell equations and Poynting theorem in the frequency domain; Wave equation, electrodynamic potentials, waves, amplitude and phase functions.
Plane Waves
Propagation Vector and Phase Speed. plane waves as a solution to Maxwell's equations. Uniform plane waves in non-dissipative media: TEM, TE and TM waves. Reflection and transmission with normal incidence; Oblique incidence: laws of reflection; coefficients of reflection; Total reflection; Reflection from the surface of a good conductor. Dielectric polarizability.
Radiation e.m.
Green function for free space; Potential vector for any source. Hertz Dipole. Radiation conditions. Reciprocity and equivalence theorems; Their applications. Antennas: radiation diagram; Directivity and equivalent area. Friis formula, radar equation.
guided wave propagation
Cylindrical symmetry structures. Expression of fields e.m .: TE, TM and TEM waves; Equivalent transmission lines. Cutting frequency.
Wave guides, Dielectric guides. - Reference texts
- David M. Pozar,
Microwave Engineering
(Fourth Edition),
Wiley, 2011
F. T. Ulaby, Fundamentals of Applied Electromagnetics, - Educational objectives
- To understand the physical phenomena related to the propagation of the electromagnetic waves. To develop a unitary vision of problems related to the high frequency use of the electromagnetic spectrum in electronics and communications.
- Prerequisites
- To the end of realizing the theoretical and technical part are necessary the following courses:
Analysis 2, geometry 1, Physics B, Network theory. - Teaching methods
- The course is organized as follows:
Classroom lessons on all subjects of the course;
Classroom exercises with the use of software suitable for solving electromagnetic problems;
Laboratory exercises. - Other information
- The teacher provides teaching material to illustrate the lecture topics in detail
- Learning verification modality
- The exam provides for an oral examination, a written test, and possibly the presentation of a technical report.
The oral test consists of a discussion lasting about 30 minutes. Aimed at ensuring the level of knowledge and understanding acquired by the student on the theoretical and methodological content developed in the program. The oral test will also allow student communication skills with language ownership and autonomous display organization.
The written test consists in solving theoretical and computational problems. - Extended program
- Transmission lines
Resolution of transmission line equations. Progressive waves and stationary waves. Line characteristic parameters. Smith's Chart: Applications.
Basic Equations and Theorems of Electromagnetism
Call: scalar and vector fields; Vector operators; Phasor method
Fundamental equations: electromagnetic field; Maxwell equations; Constituent relations; Principle of duality; Boundary conditions; Problem classification e.m .; Electrostatic and magnetostatic.
Electrodynamics: Poynting theorem, physical interpretation; Complex vectors, polarization; e.m. Field and power in complex notation; Maxwell equations and Poynting theorem in the frequency domain; Wave equation, electrodynamic potentials, waves, amplitude and phase functions.
Plane Waves
Propagation Vector and Phase Speed. plane waves as a solution to Maxwell's equations. Uniform plane waves in non-dissipative media: TEM, TE and TM waves. Reflection and transmission with normal incidence; Oblique incidence: laws of reflection; coefficients of reflection; Total reflection; Reflection from the surface of a good conductor. Dielectric polarizability.
Radiation e.m.
Green function for free space; Potential vector for any source. Hertz Dipole. Radiation conditions. Reciprocity and equivalence theorems; Their applications. Antennas: radiation diagram; Directivity and equivalent area. Friis formula, radar equation.
guided wave propagation
Cylindrical symmetry structures. Expression of fields e.m .: TE, TM and TEM waves; Equivalent transmission lines. Cutting frequency.
Wave guides, Dielectric guides.