Course Code: DS-304
The aim of the course is to enable students to understand the basic principles of electromagnetic systems for wireless communications. Using antennas as the interface of telecommunication systems with the transmission media, the course covers the characteristics and parameters of radiating systems and the electromagnetic waves they produce.
- Fundamentals on circuit theory (sinus steady state, phasors, characteristic impedance, complex power).
- Electromagnetic fields (electric field, displacement density, Gauss law, potential, potential lines, equipotential surfaces, divergence theorem, Poisson and Laplace equations, magnetic induction, magnetic flux density, magnetic field strength, ampere law for current elements, magnetic vector potential).
- Maxwell’s equations.
- Electromagnetic waves in free space (sinusoidal time variation, wave equation, plane waves, transversal e/m waves, standing waves, energy and power of waves, linear, circular and elliptical polarization).
- Point sources and e/m waves.
- Antenna radiation regions, field and power antenna patterns, basic antenna parameters (gain, directive gain, directivity etc.), antenna equivalent circuits (transmission and reception), aperture antennas, antenna polarization and loss factor.
- Transition from spherical to plane waves.
- A generic methodology for the calculation of radiated fields.
- Far field approximations.
- Basic antenna examples(hertz dipole, longer dipoles, λ/2 dipole, small loops etc).
- Basic wireless propagation equations (Friis’ equation, reflection, scattering, diffraction).
- Kraus J. (1998). Electromagnetics, McGraw-Hill.
- Balanis C. (2005): Antenna Theory: Analysis and Design, 3rd Edition, Wiley.