Antennas I, 5 op

Ydinsisältö

• Review of wave propagation, spherical wave propagation from antennas, antenna as a receiver.
• Basic antenna parameters
  Antenna patterns. Beam solid angle, Radiation intensity and beam efficiency.
  Directivity, gain, and efficiencies. Antenna apertures, effective height. Antenna impedance.
  
• Radiation from fixed current density. Electrical and magnetic dipoles, ideal ground plane. Antenna field zones. Shape-impedance considerations.
  Elementary antenna arrays.
  

  Numerical simulations to analyze electric and magnetic dipoles and elementary antenna arrays.

• Linear, elliptical and circular polarization
  

• Microstrip antenna basics:
  Analytical models (Cavity / transmission line); feeding techniques.
  
• Numerical design methods and tools.
  Construction of elementary antennas (dipoles, microstrip patches).
  Basic antenna measurements. Reporting and interpreting measurement and simulation results.
  
• Typical antenna materials, fabrication methods, and feeding methods.
  Use and basic properties of commercial antennas/antenna modules.
  

Täydentävä tietämys

• Lorentz reciprocity theorem
• Notation variations between different antenna books
  Directivity and resolution.
  The radio communication link
  
• Tolerances in constructions and in material parameters
• Poynting vector for elliptically and circularly polarized waves
  The polarization ellipse and and the Poincaré sphere.