IN/0048 - ELECTROMAGNETIC COMPATIBILITY
Academic Year 2017/2018
Free text for the University
ALESSANDRO FANTI (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/75] BIOMEDICAL ENGINEERING||[75/00 - Ord. 2014] PERCORSO COMUNE||5||50|
The course of Electromagnetic Compatibility aims to provide the student the fundamentals engineering concepts of electromagnetic field in biomedical engineering, and to present the related techniques, methods and analysis tools. The course is oriented to be both thoeretical and practical, therefore part of it is dedicated to problem-solving classes with software tools. The contents and topics weer carefully selected, relying on the consideration that a biomedical engineering would rarely design electromagnetic field-base devices, but he/se would surely interface with designer and users. Hence, this course contributes with the skills related to information engineering required in future studies and employment.
Knowledge and comprehension capability. It is expected that the successfull student knows:
- biomedical engineering applications of electromagnetic fields;
- techniques, methods, analysis tools and design of biomedical engineering applications of electromagnetic fields;
- main regulations and reccomendations of electromagnetic field exposition;
- shielding techniques and interactions between field and biological tissues, moreover, the students should write Matlab routines to simulates them.
Ability of applying knowledge and understanding. It is expected that the successfull student knows:
- to apply standard solution to several issues and cases;
- to start developing the ability of analyzing and interpreting the mathematical solutions found.
Autonomous assesments. It is expected that the successfull student is able to indentify autonomously the isseus inherent to a specific application of electromagnetic field engineering, also proposing a valid solution to it. It is fundamentale that the student could evaluate autonomously the differences between different devices (e.g. shileds) designed for the same applications, in order to suggest the best choice for the problem under analysis.
Communications skills. At the end of the course the student it is expected to have acquired the language skills related to the course contents, so that he/she can express in a comprehensible form with a non-technical interlocutore, also conveying essential concepts and informations.
Learning ability. It is expected that the successfull student owns the knowledge, the tools and methodologies necessary to deepen the understanding of engineering applications of electromagnetic field in an autonomous way in his/her future studies and in the professional practice (such as the post-lauream traineeships). In this way the student can efficiently interact with the designer of electromagnetic devices, namely shielding devices, coil for magneti resonance imaging, and the other clinical devices. By the information, concepts and techniques learned from the course the student is expected to be able to:
- understand the procedure of verifications of the main electromagnetic devices;
- undestand how it is possible to act on such devices to have a preliminary analysis to report malfunctioning;
- seize technological changes in the field.
A good knowledge and abilities in college math and physics and in applied math (with a focus on differential and integral calculus in 1,2,3 variables, vector algebra and analysis, complex number and complex exponentials, simple differential equations, Fourier transform) are required to face the course.
Moreover, the course require a good knowledge, ability and competencies on circuit theory, above all on AC circuits.
The course is logically dived in three parts. In the very first part the fundamental concepts of electromagnetic field are developed, especially the energetic balance of the field. Then propagation, reflection and refraction of plane wave are presented. Finally, the chosen applications are discussed, in particular the shileding techniques and interactions between electromagnetic field and biological tissues.
Variable electromagnetic field laws: Maxwell's equation, constitutive relations, field continuity, energy balanca (Les 4 hr; Ex 1 hr);
Plane Waves: Wave propagation, plane wave, incidence on semispaces, Snell law, Fresnel coefficient (Les 7 hr; Ex 2 hr);
Transmission lines (Les 3 hr; Ex 1 hr);
Elementary sources and field sensors: elementary electric dipole, near and far field, duality, elementary coil, field sensor (Les 6 hr; Ex 2 hr);
Electromagnetic shields: thin and thick shields, shield with apertures, near-field shielding (Les 5 hr; Ex 5 hr);
Electromagnetic properties of materials: dielectrics, Debye model, dielectric properties of water and of biological tissues (Les 3 hr; Ex 1 hr);
Interactions with human body: exposure regolations, hyperthermia (Les 3 hr; Ex 2 hr);
Diagnostic with electromagnetic fields: radiometric diagnostic, MRI (Les 3 hr; Ex 1 hr).
Hours of activity are approcimately dived as follows:
Lessons: 34 hr;
Workshop: 1 hr;
Practical exercises in computer labs: 15 hr.
The course is based on face to face lectures, to which is added a significant exercitaions part using Matlab. The goal is to link in a clear way the topic and contents to other courses and to professional practice. The practical part is focused on the ability to build a simple mode in Matlab language to describe the object/device or phenomenon in order to derive the required results.
At least one workshop would be helded by an expert of biomedical applications of electromagnetic field is granted during the course.
During first lessons notions related to vectors and complex number are presented, since these topics are not often employed in previous courses. Therefore, knowledge is verified before and after that.
Verification of learning
Assessment and grading criteria:
A written final exam and an oral presentation regarding analysis and design problem similar to those presented during the course. In particular, an object or a phenomenon should be modeled using the concepts and the models devolped at lessons, in order to derive simple relation that describe it, and then solved. Part of the exercises will be structured to need skills, knowledge and ability taken from the course to solve them.
The highest grade can be achieved if the succesfull student have a certain competence. Therefore, the final grade increases as the level of skills and competence demonstrate increases.
G. CONCIAURO, R. PERREGRINI: Introduzione alle Onde elettromagnetiche, Ed. McGraw-Hill;
G. FRANCESCHETTI: Campi Elettromagnetici, Ed. Bollati Boringhieri;
A. BOCHICCHIO, G. GIAMBARTOLOMEI: Lezioni di Compatibilità Elettromagnetica, Ed. Pitagora.
To deepen some arguments, the following texts can be useful:
D. FLEISCH: A Student's Guide to Maxwell's Equations - Cambridge Univ. Press;
J.A. EDMINISTER: Theory and problems of Electromagnetics - collana Schaum - Ed. McGraw-Hill ;
S. RAMO, J. WHINENRY, A. VAN DUZER: Campi e Onde nell'Elettronica per le Comunicazioni Ed. F. Angeli;
G. CONCIAURO: Onde elettromagnetiche, Ed. McGraw-Hill;
J.D. JACKSON: Elettrodinamica classica, Ed. Zanichelli
The teaching materials is provided free of charge to all students in employment. For copyright issues, the educational material is provided in non-editable pdf format, protected by password for reading and editing. The material will be uploaded to the site before the lesson or exercise. Guidelines for obtaining copies are available from the alerts on the course page.
Matlab was acquired by the University of Study of Cagliari and it is available free of charge to all students.