Sumários

NF Beam Comunications

7 Abril 2026, 09:00 • Sérgio Matos

  • Introduction
  • High-data-rate wireless links: challenges for far-and near-field radiating systems 
  • Near-field beam focusing and shaping in planes and volumes
    • Derivation of the aperture field distribution
    • Synthesis of the aperture field distribution with RLSA and metasurfaces
  • Example of beam focusing for cancer detection 

Self-Study

6 Abril 2026, 17:30 • Sérgio Matos

Self-study and questions

NF Ray Tracing (Part II)

6 Abril 2026, 16:30 • Sérgio Matos

  • Brief introduction to near-field focusing beams 
  • Quasi-nondiffracting radial GRIN lenses 
  • Quasi-nondiffracting geodesic lenses 
  • Near-field physical optics applied to 3D rotationally-symmetric GRIN lenses 

Near Field Ray Tracing

6 Abril 2026, 14:00 • Sérgio Matos


Introduction to the generalized Luneburg lens problem

  1. Geodesic lens antennasEquivalent to Luneburg lenses
  2. Compressed lenses, double layer, and other possibilities...
  3. Polarization control
  4. Beyond Ka-band
  5. Conclusions

Near-field Fundamentals Part II

6 Abril 2026, 11:30 • Sérgio Matos

  • Synthesis techniques for near-field focused antennas
  • Technologies for near-field focused antennas: A review
  • Conclusions and open problems