Pristupačnost
In the framework of the European School of Antennas, the course "Metasurfaces for Antennas" will be be held at the Faculty of Electrical Engineering and Computing in Zagreb, Croatia, from 5th to 9th October 2015. The European School of Antennas (ESoA) is a geographically distributed post graduate school that has the objective to reinforce the European training and research in antennas and relevant applications. The Summary of the course is given below, and the detailed description of the course is given at the course web page.
Summary
In recent years there has been significant research on synthesizing new materials that can be used for new and better antennas, and for resonance-free electromagnetic (EM) packaging of microwave-components and electronic circuits. Metasurfaces constitute a class of thin metamaterials, which are used from microwave to optical frequencies to control wave propagation along the surface, i.e. to enable new radiation and guiding properties. At microwave frequencies, they are constituted by sub-wavelength size patches or pins printed on thin grounded dielectric substrates or realized as a texture in a metal surface. During this course the background and basic theory of different types of canonical metasurfaces will be explained, as well as how to realize such surfaces for sufficient bandwidth for different applications, and how to devise good theoretical models and implement them numerically. The material will be presented in relation to specific types of surfaces and their applications, such as: soft and hard surfaces (represented by PEC/PMC strip grids and realized by e.g. corrugations), Artificial Magnetic Conductors (AMC), Electromagnetic BandGap (EBG) surfaces, controllable “smart” surfaces, stopband surfaces used to suppress parallel-plate modes in gap waveguides, and novel wave-guiding structures. Some key words regarding applications are reduction of sidelobes and mutual coupling (EBG and soft surfaces), reduction of blockage and cloaking (hard surfaces), novel metasurface antennas, metasurface lenses, compact efficient horn antennas, miniaturization. The last part of the course will be devoted to the design of gap waveguides for different practical millimeter wave antenna systems, such as: high-Q gap waveguide filters, planar gap waveguide antennas, and gap waveguides for EM packaging in RF front-ends.