Lecture
This lecture covers the concepts related to antennas and RF-ID systems, including the improper use of the ratio GR Top in receiver antennas, the definition of PR/PN for analog transmission, the characteristics of antennas in free space and guided waves, the transformation of guided waves into radiated waves, and the link between Kirchhoff's world and Maxwell's world. It also discusses the radiation pattern, directivity, gain, polarization, reciprocity, and the elementary antenna: the Hertzian dipole.