The Maxwell's equations and the related applications.
Learning outcomes (according to the Dublin descriptors)
#1: Knowledge and understanding. The knowledge of the formal elements of the Maxwell’s equations in their differential and integral forms in the time-domain, phasor-domain and frequency-domain as well as their relationship.
#2: Applying knowledge and understanding. Develop skills to deal with Maxwell’s equation related theorems and manipulations to get to applied results. For example, the use of potentials methods to get the plane wave solution and the elementary dipole.
#3: Making judgements.
Develop skills in connecting formal results with physical and applicative ones.
#4: Communication skills.
Develop skills in presenting in short time, logically and effective the key concepts of the course.
#5: Learning skills. Skills to relate the key electromagnetic concepts with different applications and skills acquired in other courses.
None formal. Advisable Math and Physics.
The electromagnetic waves in modern society.
Mathematical foundations: Vector spaces, scalar product, norm. Normed spaces, Distance, Hilbert spaces.
Complex numbers. Operations with complex numbers. Phasor definition.
Maxwell’s equations in differential form in the time-domain (DT). Maxwell’s equations in integral form in the time-domain. Displacement current. Maxwell’s equations in phasor-domain (DP) and in the frequency-domain (DF).
Costitutive relationships. Boundary conditions. Uniqueness theorems for the interior and exterior problems in the DT and DP/DF. Poynting theorem in the DT and DF. Wave polarimetry. Plane waves. Uniform plane waves in the DT (in vacuum). Uniform plane waves in the DF. Phase and group velocity.
Normal reflection. Oblique reflection. Brewster’s angle. Limit angle.
The wave solution derived through the potential approach. Lorentz gauge. Planar wave classification.
Vector and scalar potentials. Electric dipole. Far field for the electric dipole. Magnetic dipole. Ampere theorem.
Fundamentals of Antennas. Extended antennas. Green function and their approximations: Fraunhofer and Fresnel regions. Transmitting antennas’ parameters: effective length, input impedance, radiation resistance, directivity, gain. Radiation diagrams. Equivalent circuit for the transmitting antenna. Receiving antennas’ parameters: effective length, effective area. Relation between gain and effective area. Equivalent circuit for the receiving antenna. Radio link equation.
-G.Franceschetti, Campi Elettromagnetici, Boringhieri.
-G.Someda, Electromagnetic waves, Chapman & Hall.
The educational material for the student is available on the e-learning site edi.uniparthenope.it (the access is limited to students and needs a password)