- R. E. Collin, Antennas and radiowave propagation, , 1985.
- J. D. Kraus, Electromagnetics, McGraw-Hill.
- S. Ramo, J. R. Whinnery, T. Van Duzer, Campi e onde nell’elettronica per le comunicazioni, Franco Angeli Ed.
Learning Objectives
Provide the basics of the radiation of an electromagnetic wave and the application of the fundamental theorems of electromagnetism to such problems.
Provide the basics of antenna operation: characteristic parameters in transmission and reception, efficiency of antennae.
Provide the basics of propagation of an electromagnetic wave in guiding structures.
Oral examination
As a first step the candidate will bw asked to solve an antenna problem. Then, several questions will be asked about all parts of the course syllabus.
Course program
Radiation theory
Vector and scalar potentials, Lorenz gauge, Helmholtz equations. Elementary sources (electrical and magnetic). Far-field radiation. Duality Theorem. Reciprocity and reaction Theorems. Small circular .
Antennas
Finite length Dipole, Radiation pattern, Directivity, Antenna Efficiency, Gain, Antenna polarization, Input Impedance. N-element linear array. Antenna vector effective length and equivalent areas. Friis transmission equation. Field equivalence principle. Aperture antennas: rectangular apertures. An introduction to reflector antennas.
Waveguides and transmission lines
Field representation in uniform waveguides. Mode characteristic. Coaxial cable. Rectangular waveguide. Transmission lines/waveguide analogy. Power.