Learning outcomes of the course unit
The course will introduce the student to the basic technical knowledge of the electromagnetic radiation phenomena, will illustrate common type of antennas, their applications and design issues related to their use.
Elettrotecnica AB, Propagazione Guidata.
Course contents summary
Short dipole. Radiated electromagnetic field. Far and near components. Medium irradiated power, active and reactive power. Antenna Radiation Characteristics, Antenna pattern, directivity, gain, radiation resistance, beam dimension. Short dipole characteristics. Near field, far field. Fresnel and Fraunhofer zone. Half-wave Dipole Antenna. Virtual sources. Semi-dipole. Antenna arrays. Uniform array. Array factor. End-fire and broad-side array. Aperture antennas. Rectangular aperture with uniform aperture distribution. Horn antennas. Reflector antenna. Plane, angle and parabolic reflector. Patch antennas. Antennas for mobile phones. Bandwidth. Cylindrical dipole. Biconic antennas. Folded dipole. Yagi-Uda and Log-Periodic antennas. Friis formula. Radar. Power balance in a radio link. Laboratory. Utilization of PCCAAD.
F.T. Ulaby “Applied Electromagnetics”, Prentice Hall, 1999.
J.D. Kraus, D.A. Fleisch “Electromagnetics with Applications”, McGraw Hill, 1999.
C.A. Balanis “Antenna Theory, Analysis and Design”, Wiley, 1997.
Written exam.Lab activity with numerical codes for the analysis of field radiated by simple antennas.