Modeling and Characterization of a Holographic Artificial Impedance Antenna with SIW Feeding for Beam Scanning

In this work is proposed a Holographic Artificial Impedance antenna implemented with a SIW feeding to produce a narrow beam in a controlled direction. Parameters in the feeding such as directivity, Front-to-Back Ratio (FTBR) and reflection coefficient can be engineered to provide a surface wave more directive, exciting the antenna with a higher level of power. The results present that the dimensions of the holographic surface are reduced without affects the performance of high gain, low sidelobe level, and narrow beam. Furthermore, a modification in the holographic surface was realized producing a change in the polarization of the antenna.