An AMC Based Metasurface Patch Antenna for C-Band and X-Band Applications

A low-profile, efficient and directive gain enhanced antenna on an artificial magnetic conductor (AMC) reflector has been proposed in this paper. The AMC based metasurface antenna (MSA) has been formed by incorporating the CPW-fed slotted patch antenna along with a
$5\times 5$
order metasurface (MS). The slotted patch and the AMC reflector have been designed over FR4 dielectric and separated by a layer of Teflon, thereby acting as a superstrate. This antenna has fractional bandwidths of 11.6 %, 5.3 %, and 7% at three frequencies, such as 4.13 GHz, 8.80 GHz, and 12.01 GHz respectively. The antenna achieves the realized gain of 10.2 dBi at 12.4 GHz. The antenna provides directional radiation characteristics in both the E- and H-planes. The proposed prototype can be used for WLAN applications, medical supervision, satellite communication, and defence applications in the C and X-bands.