I will describe some aspects of my recent research. I will show my recent progress on low profile antennas at millimeter waves and also on a class of antennas based on high impedance surfaces that are extremely flat. And how they can be a solution for having a moderate bandwidth despite their flatness. I will also show interesting properties of hyperbolic materials as super absorbers for near fields. They are able to absorb almost completely fields generated by scatterers at their surface hence make objects (like antennas) invisible. I will discuss metasurfaces that generalize the Fermat's principle, how they can be used to generate flat lenses and polarizers and vortex beams with angular momentum and some applications. I will also introduce one of my most exciting recent topics of coupled transmission lines with degeneracy condition and how they could be useful to make better amplifiers, more efficient oscillators and lasers with lower threshold.