Electromagnetic field Mod A
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.
1. Mathematical foundations (~8h)
Vector fields. Vector operators. Fourier Transform. Phasor domain. Operations with complex numbers.
2. Maxwell’s equations (~10h)
Maxwell’s equations in differential form in the time-domain (TD). Maxwell’s equations in integral form in the time-domain. Maxwell’s equations in te phasor-domain (PD) and in the frequency-domain (FD).
3. Wave polarization (~5h). Linear, circular, elliptical polarization
4. Constitutive relationships. (~5h)
5. Theorems. (~8h)
Poynting theorem (TD and PD). Uniqueness (TD and PD): the interior and exterior problems. Equivalence theorem. Image theory. Reciprocity theorem.
6. Plane waves (~12h)
Plane waves. Plane waves in non-dispersive media (TD). Plane waves in dispersive media (P and FD). Propagation; attenuation; dispersion: phase and group velocity. Homogeneous and non-homogeneous plane waves. Incidence: Perpendicular and parallel polarization. Limit angle. Brewster angle.
7. Source-fields relationship (~8h)
Vector and scalar potentials. Green’s function. Green’s function approximation: Fraunhofer and Fresnel regions.
8. Elementary sources (~6h)
Electric and magnetic dipoles. Equivalence Ampère theorem.
9. Antennas’ parameters (~10h):
Transmitting antennas. 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.
The 72h course deals with:
1. Mathematical foundations
2. Maxwell’s equations
3. Constitutive relationships.
4. Field polarization
6. Plane waves
7. Source-fields relationship
8. Elementary sources
9. Antenna parameters
Traditional lecture, practice.
- G. Franceschetti, Electromagnetics, Plenum Press
-G.Franceschetti, Campi Elettromagnetici, Boringhieri.
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)
The examination aims at verifying the previously stated educational targets. The examination consists of:
•Oral exam that aims at evaluating the student’s ability to link and analyze the topics studied during the course; the minimal score to pass the test is 18/30;
Teacher’s notes available on the course website (www.edi.uniparthenope.it)
-Thursdays 11-13 (Office)
-Fridays 17:30-19:30 (On-line)
However, I have an open door policy allowing students to come and ask questions anytime.