Generic antenna design using metasurfaces

In earlier work, metasurfaces were used to redirect or focus light by tailoring the surface profile to control the phase and magnitude of the current at each of the cells comprising the metasurface. In this work, a metasurface is used to design antennas by tailoring the feed for each resonator to create optimal radiation behaviour. The new antenna is an ensemble of electrically-small resonators periodically arranged on a square Rogers substrate. Each resonator has a maximum dimension of less than lambda/15. Two different antenna sizes were studied in this work to show that the new design allow for has the ability to increase the gain incrementally. The two antennas were designed at 2.72 GHz. the first metasurface antenna measured 0.54λ × 0.54λ and achieved a gain of 7 dBi, while the second antenna measured 1.09λ × 1.09λ and had a gain of 11.7 dBi.