Propagation and Radiation of Electromagnetic Waves

Objectives

Provide the students with a solid background in electromagnetic waves from the perspective of their application in modern telecommunication, radar and computer network systems. Study of guided wave propagation, free space propagation and simple antenna basic concepts and principles. Application to radar and radio communication systems.

Program

Fundamentals
Plane waves in unbounded media. Characterization of dielectrics and conductors. Polarization. Energy and power. Reflection andrefraction in a planar interface.
Guided Wave Propagation
Transmission Lines
High frequency effects. Lossless and lossy transmission lines. Voltage and current along a transmission line. The Smith chart.Impedance matching.
Metallic Waveguides
Parallel plate and rectangular metallic waveguides. Modes. Dispersion equation, cutoff frequencies, phase and group velocities,Brillouin diagram. Power transportation and attenuation.
Optical Fibers Modes. Normalized parameters. Single mode and multimode optical fibers. Dispersion and attenuation. Information transmission capacity.
Radiation
Elemental antennas: Hertz electrical dipole and small loop antenna. Fundamental parameters of antennas. Linear dipoles. Monopoles. Antenna arrays. Image theory. Mutual coupling.

Teaching Methodologies

50% continuous evaluation / 50% non-continuous evaluation

Bibliography

Sebenta de PROE, 2002, Secção de Folhas da AEIST;
Field and Wave Electromagnetics, D. K. Cheng, 2002, Addison-Wesley;
Introdução às Fibras Ópticas, A. Brinca, Secção de Folhas da AEIST;
PROE 1, Ondas e Meios Materiais, M. Abreu Faro, 1979, Técnica, AEIST;
PROE 2, Radiação, M. Abreu Faro, 1980, Técnica, AEIST;
PROE 3, Propagação Guiada, M. Abreu Faro, 1984, Técnica, AEIST.