ADVANCED ELECTROMAGNETICS

Ingegneria Elettronica ADVANCED ELECTROMAGNETICS

0622400017
DIPARTIMENTO DI INGEGNERIA INDUSTRIALE
EQF7
ELECTRONIC ENGINEERING
2022/2023



YEAR OF COURSE 2
YEAR OF DIDACTIC SYSTEM 2018
SPRING SEMESTER
CFUHOURSACTIVITY
660LESSONS
Objectives
THE COURSE “ADVANCED ELECTROMAGNETIC” REPRESENTS THE NATURAL COMPLETION OF THE TOPICS TACKLED IN THE PREVIOUS ELECTROMAGNETICS COURSES AND, IN PARTICULAR, IN THE ANTENNAS ONE. TO THIS END, SOME NUMERICAL AND ANALYTICAL TECHNIQUES, WIDELY EMPLOYED TO SOLVE ELECTROMAGNETIC PROBLEMS, ARE PRESENTED. THE COURSE CONTAINS A SIGNIFICANT PART FOCUSED ON LEARNING THE USE OF A CAD-SOFTWARE BASED ON THE FINITE ELEMENT METHOD.
Prerequisites
A GOOD KNOWLEDGE OF THE TOPICS TACKLED IN THE PREVIOUS ELECTROMAGNETICS COURSES AND, IN PARTICULAR, OF THE ANTENNAS THEORY IS MANDATORY TO PROFITABLY REACH THE GOAL OF THE COURSE.
Contents
REVIEW OF THE FUNDAMENTAL LAWS OF ELECTROMAGNETICS. CLASSIFICATION OF ELECTROMAGNETIC (EM) PROBLEMS. FINITE DIFFERENCE METHOD (FD) AND ITS APPLICATION TO THE SOLUTION OF EM PROBLEMS. ACCURACY AND STABILITY OF FD SOLUTIONS. (3 hours teaching time - 2 hourS interactive classroom activities with exercises)

THE FINITE ELEMENT METHOD (FEM): DISCRETIZATION OF DOMAIN IN FINITE ELEMENTS: MESHING A VOLUME (GENERATION OF AN ADAPTATIVE MESH), ELEMENT GOVERNING EQUATIONS, MODELING A SOURCE, ASSEMBLING OF ALL ELEMENTS AND SOLVING THE RESULTING SYSTEM OF EQUATIONS. BOUNDARY CONDITIONS: “PERFECTLY MATCHED LAYER” (PML), “ANISOTROPIC UNIAXIAL PML” (U-PML), "RADIATION BOUNDARY", "MASTER-SLAVE" BOUNDARY CONDITION FOR INFINITE PERIODIC STRUCTURES (FSS). (3 hours teaching time - 8 hours interactive classroom activities with exercises)

DECRIPTION OF SOME SOFTWARE TOOLS WIDELY EMPLOYED IN ELECTROMAGNETICS. NUMERICAL FEM CODE DEVELOPMENT TO ANALYZE A PLANAR SPIRAL ANTENNA TO FUNCTION AS A RFID-TAG. (3 hours teaching time - 8 hourS interactive classroom activities with exercises)
ASYMPTOTIC EVALUATION OF ONE-DIMENSIONAL AND TWO-DIMENSIONAL INTEGRALS BY MEANS OF THE STATIONARY PHASE METHOD. UNIFORM ASYMPTOTIC EVALUATION BY MEANS OF THE STEEPEST DESCENT METHOD OF AN INTEGRAL WITH ONE OR MORE POLE SINGULARITIES NEARBY A FIRST ORDER SADDLE POINT. APPLICATION TO THE EVALUATION OF THE UNIFORM DIFFRACTION COEFFICIENTS FOR A LOADED WEDGE. (Hours: 8 theory - 2 exercises)

SOLUTION OF HELMOLTZ SCALAR EQUATION IN CYLINDRICAL COOORDINATES. CYLINDRICAL WAVE EXPANSION OF THE FIELD RADIATED BY AN ANTENNA. CYLINDRICAL NEAR-FIELD-FAR-FIELD TRANSFORMATION (NF-FF) WITH AND WITHOUT PROBE COMPENSATION. (Hours: 7 theory - 2 exercises)

NONREDUNDANT SAMPLING REPRESENTATIONS OF ELECTROMAGNETIC FIELDS: REDUCED FIELD AND LOCAL (SPATIAL) BANDWIDTH, OPTIMAL CHOICE OF THE PHASE FACTOR AND PARAMETERIZATION. ELLIPSOIDAL MODELLINGS OF THE RADIATING SOURCE. OPTIMAL INTERPOLATION OF THE ELECTROMAGNETIC FIELD ON ROTATIONAL SURFACES. APPLICATION OF THE NONREDUNDANT SAMPLING REPRESENTATIONS TO THE NF-FF TRANSFORMATIONS WITH CYLINDRICAL, PLANE-POLAR, BI-POLAR, AND SPHERICAL SCANNINGS. NF-FF TRANSFORMATION TECHNIQUES WITH SPIRAL SCANNINGS. (Hours: 8 theory - 4 exercises - 2 laboratory)
Teaching Methods
THE COURSE MAINLY INCLUDES THEORETICAL LESSONS, BUT THERE ARE ALSO MANY NUMERICAL AND SOME LABORATORY PRACTICES. THE NUMERICAL ONES ARE CONCERNED WITH THE USE OF SOFTWARE TOOLS WIDELY EMPLOYED TO SOLVE ELECTROMAGNETIC PROBLEMS BOTH IN THE SCIENTIFIC RESEARCH AND IN THE INDUSTRIAL DESIGN. SOME COMPUTER CODES BASED ON THE STUDIED TECHNIQUES ARE ALSO DESCRIBED. THE LABORATORY PRACTICES DEAL WITH ADVANCED ELECTROMAGNETIC MEASUREMENTS. AS, E.G., THE DETERMINATION OF THE ANTENNA RADIATION PATTERN FROM NONREDUNDANT NEAR-FIELD MEASUREMENTS ACQUIRED VIA A SPIRAL SCANNING. IT IS ALSO PLANNED THE DESIGN (IN GROUP) OF AN ANTENNA, THE EXPERIMENTAL VERIFICATION OF ITS RADIATION PATTERN, AND THE WRITING OF THE RELATED TECHNICAL REPORT.
Verification of learning
THE ACHIEVEMENT OF THE FIXED GOALS WILL BE ASSESSED BY AN ORAL EXAMINATION OF AN AVERAGE DURATION OF ABOUT 60 MINUTES, AIMED AT EVALUATING THE OVERALL LEVEL IN THE LEARNING OF THE CONCEPTS PRESENTED IN THE COURSE AND THE STUDENT’S ABILITY TO APPLY THEM. SUCH AN EXAMINATION CONSISTS OF AT LEAST THREE QUESTIONS ON DIFFERENT TOPICS COVERED IN THE COURSE AND A DETAILED DISCUSSION ON A TECHNICAL REPORT CONCERNING THE DESIGN OF A MICROWAVE DEVICE OR A MICROSTRIP PATCH ANTENNA. THE EVALUATION GRADE RANGES FROM 18/30 TO 30/30 CUM LAUDE. THE MINIMUM EVALUATION GRADE (18/30) IS ATTRIBUTED WHEN THE STUDENT DEMONSTRATES A JUST SUFFICIENT AND FRAGMENTARY KNOWLEDGE OF THE THEORETICAL CONTENTS OF THE COURSE AND SHOWS A LIMITED ABILITY IN APPLYING THEM. THE EVALUATION GRADE (30/30) IS ATTRIBUTED WHEN THE STUDENT DEMONSTRATES A COMPLETE AND DEEP KNOWLEDGE OF THE THEORETICAL CONTENTS OF THE COURSE AND OF THE STUDIED METHODS AND SHOWS A REMARKABLE ABILITY IN APPLYING THEM.
THE MAXIMUM EVALUATION GRADE (30/30 CUM LAUDE) IS ATTRIBUTED WHEN THE STUDENT:
-DEMONSTRATES A REMARKABLE MASTERY OF THE THEORETICAL CONTENTS OF THE COURSE AND OF THE STUDIED METHODS;
-ANSWERS TO THE QUESTIONS IN A CLEAR AND EXHAUSTIVE WAY, BY SHOWING A VERY APPROPRIATE SCIENTIFIC LANGUAGE AND JUDGEMENT AUTONOMY;
-DEMONSTRATES TO BE ABLE IN APPLYING THE STUDIED METHODS ALSO IN CONTEXTS DIFFERENT FROM THOSE TACKLED DURING THE COURSE.
THE STUDENT CAN DIVIDE THE ORAL EXAMINATION INTO THREE PARTIAL EXAMINATIONS (EACH OF THEM EXEMPTS FROM THE RESPECTIVE PART OF THE COURSE) PLUS A FINAL ONE, WHICH WILL BE CONCLUDED WITH THE OVERALL EVALUATION. THIS LAST WILL PROPERLY TAKE INTO ACCOUNT THE PREVIOUSLY OBTAINED PARTIAL RESULTS. THE DATE OF EACH PARTIAL EXAMINATION IS AGREED WITH THE STUDENT, BUT ALWAYS FOLLOWS THE END OF THE LESSONS RELATED TO THE CORRESPONDING PART OF THE COURSE.
Texts
F. FERRARA, C. GENNARELLI, DISPENSE DEL CORSO DI COMPLEMENTI DI ELETTROMAGNETISMO.
M.N.O. SADIKU, NUMERICAL TECHNIQUES IN ELECTROMAGNETICS, CRC PRESS, BOCA RATON, USA, 1992.
A. TAFLOVE, S. C. HAGNESS, COMPUTATIONAL ELECTRODYNAMICS: THE FINITE-DIFFERENCE TIME-DOMAIN METHOD, ARTECH HOUSE, BOSTON, USA, 2000.
C. GENNARELLI, G. RICCIO, F. D’AGOSTINO, F. FERRARA, NEAR-FIELD – FAR-FIELD TRANSFORMATION TECHNIQUES, EDIZIONI CUES, VOL. 1, SALERNO, 2004.
C. GENNARELLI, G. RICCIO, F. D’AGOSTINO, F. FERRARA, R. GUERRIERO, NEAR-FIELD – FAR-FIELD TRANSFORMATION TECHNIQUES, EDIZIONI CUES, VOL. 2, SALERNO, 2006.
T. B. A. SENIOR, J. L. VOLAKIS, APPROXIMATE BOUNDARY CONDITIONS IN ELECTROMAGNETICS, IEE ELECTROMAGNETIC WAVES SERIES, THE INSTITUTION OF ELECTRICAL ENGINEERS, LONDON, 1995.
K. FINKENZELLER, “RFID HANDBOOK: FUNDAMENTALS AND APPLICATIONS IN CONTACTLESS SMART CARDS, RADIO FREQUENCY IDENTIFICATION AND NEAR-FIELD COMMUNICATION,” JOHN WILEY & SONS, LTD.
More Information
THE EXAM IS HELD IN ITALIAN.
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