Miniaturizing a Microstrip Antenna Using Metamaterials and Metasurfaces [Antenna Applications Corner]

A smaller microstrip antenna design is essential for current and future wireless applications. For the design proposed in this article, researchers achieved size reduction when a circular microstrip patch is loaded with a metamaterial structure using a complementary split ring resonator (CSRR) with partially loaded nonuniform metasurfaces (NUMSs) on a ground plane. The designed antenna achieved a size reduction of 74% compared to a conventional microstrip antenna. The proposed antenna, resonating at 6.22 GHz, is designed, fabricated, and tested, and the measured results are then compared with the simulations as well as with the designs reported in the literature. The proposed antenna can be used for wireless applications, such as an indoor base-station antenna for vehicle-tovehicle communications.