ADVANCED ELECTROMAGNETICS

Ingegneria Elettronica ADVANCED ELECTROMAGNETICS

0622400017
DIPARTIMENTO DI INGEGNERIA INDUSTRIALE
ELECTRONIC ENGINEERING
2014/2015

YEAR OF COURSE 2
YEAR OF DIDACTIC SYSTEM 2012
SECONDO SEMESTRE
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.
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. THE FINITE DIFFERENCE TIME DOMAIN METHOD (FDTD): YEE’S FINITE DIFFERENCE ALGORITHM. BOUNDARY CONDITIONS: “PERFECTLY MATCHED LAYER” (PML), “ANISOTROPIC UNIAXIAL PML” (U-PML). FINITE ELEMENT METHOD (FEM): DISCRETIZATION OF DOMAIN IN FINITE ELEMENTS, ELEMENT GOVERNING EQUATIONS, ASSEMBLING OF ALL ELEMENTS AND SOLVING THE RESULTING SYSTEM OF EQUATIONS. DECRIPTION OF SOME SOFTWARE TOOLS WIDELY EMPLOYED IN ELECTROMAGNETICS. 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. 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. CYLINDRICAL WAVE EXPANSION OF THE FIELD RADIATED BY AN ANTENNA. CYLINDRICAL NEAR-FIELD-FAR-FIELD TRANSFORMATION (NF-FF) WITH AND WITHOUT PROBE COMPENSATION. 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.
Teaching Methods
THE COURSE MAINLY INCLUDES THEORETICAL LESSONS, BUT THERE ARE ALSO SOME NUMERICAL AND 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 COURSE MAINLY INCLUDES THEORETICAL LESSONS, BUT THERE ARE ALSO SOME NUMERICAL AND 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.
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.
More Information
THE COURSE IS TAUGHT WITH OBLIGATORY ATTENDANCE AT THE FACULTY OF ENGINEERING. SCHEDULE AND CLASSROOMS ARE AVAILABLE AT HTTP://WWW.INGEGNERIA.UNISA.IT/.
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