Propagation and Radiation (Electromagnetics)
Code
2184
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Engenharia Electrotécnica
Credits
6.0
Teacher in charge
Isabel Maria da Silva Pinto Gaspar Ventim Neves, Paulo da Costa Luís da Fonseca Pinto
Weekly hours
8
Teaching language
Português
Objectives
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The course aims at providing the students with basic on the “Electromagnetics” scientific area.
Objectives: Learning about
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Prerequisites
Subject matter
Wave concept, fase and fase velocity. Differential and integral forms of Maxwell equations, and physical interpretation. Wave popagation in free space and in bounded media: Snell laws, total reflection and power transfer. Guided wave boundary conditions, modal propagation and cuttoff. Rectangular waveguides, transmission lines and optical miltimode fibres. Vector ans scalar potencials, and the far radiated field properties. Duality of Maxwell equations. Radiation from very small structures: current element and elementar aperture. Fundamental concepts related to emitting and receiving antennas and radiated field. Standing wave linear antennas: radiation diagrams, self and mutual impedances. Antena array fundamentals, and antenna facing the gound application: radiation diagrams and gain calculation. Aperture antennas: electromagnetic horns.
Bibliography
Isabel Ventim Neves, “Propagação e Radiação”, FCT, Secção de Folhas.
M. de Abreu Faro, "Propagação Guiada, Técnica AEIST, 1984
M. de Abreu Faro, "Radiação, Técnica AEIST, 1980
R.E. Collin, "Antennas and Radiowave Propagation", MacGraw-Hill, 1999
Teaching method
In the theoretical classes both the related mathematical development and the physical concepts are rigorously presented.
In the practical classes application problems are resolved, covering all the theoretical concepts.
In the laboratory classes the students apply with simple proposed work the fundamental concepts, presenting also the results interpretation and answering theoretical questions.
Evaluation method
The final classification have both a pratical (20%) and a theorical part (80%).
In order to obtain the pratical classification the student must work in the Laboratory sessions, and present the related Repports.
For the theorical classification the student may realise 2 proofs with problems and theorical questions and/or one final exame.