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TITLE COURSE

Fundamentals of radio propagation and antennas

DESCRIPTION

Theory of radio propagation. Antennas for radio communication systems.

HOW THE COURSE IS STRUCTURED

Theoretical session with projection slides. Practical session. Questionnaire for the evaluation of learning.

COURSE DURATION

1 day

PROGRAM

Propagation of radio waves

  • General information on the propagation
  • Ground wave
  • Surface waves
  • Space waves
  • Tropospheric propagation
  • Sky wave (or reflected wave)
  • Ionospheric propagation
  • Elements of transmission lines

Elements of transmission lines

  • General equations on the propagation
  • Propagation conditions along the line
  • Reflection coefficient
  • The standing wave
  • Standing wave report
  • Input impedance
  • Adaption with section ?/4
  • Adaption with stab

Fundamentals parameters of antennas

  • Irradiation pattern
  • Power density of radiation
  • Radiation intensity
  • Directivity
  • Gain
  • Antennas efficiency
  • Bandwidth
  • Polarization
  • Antenna impedance
  • Lenght and effective area of antenna
  • Friis transmission equation

Antennas

  • Wire antennas
  • Hertzian dipole
  • Short dipole
  • Electromagnetic filed region: Far-field (Fraunhofer); near-field region
  • (Fresnel); reactive near field
  • Finite-lenght dipole
  • Dipole ?/2
  • Linear antennas on the ground
  • Loop antennas
  • Primary coil
  • Loop
  • Linear and planar array antennas
  • Braodside arrays
  • Endfire arrays
  • Banwidth dipoles and antennas
  • ABiconical antennas
  • Yagi-Uda
  • Log-periodic antenna
  • Aperture antennas
  • Horn antennas
  • Parabolic reflector antennas
  • Planar antennas

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