Boresight gain enhancement of a dielectric resonator antenna using a metasurface lens

Abstract

A Dielectric Resonator Antenna (DRA) loaded with a Metasurface (MS) lens is proposed in this paper. The proposed Metasurface lens is optimally placed at a height of λ/2 from a microstrip fed narrowband Dielectric Resonator Antenna (DRA) consisting of a rectangular dielectric block of size 17×17×4.2 mm3 and εr = 18. Both standalone DRA and DRA loaded with metasurface lens are designed and simulated in HFSS-15. The simulated results reveals a significantly higher gain (9.90 dBi) for the MS loaded DRA over the standalone DRA (5.86 dBi).