A High Gain Rectangular Microstrip Patch Antenna Using Different C Patterns Metamaterial Design in L-Band

Design of rectangular microstrip patch antenna loaded with "different C patterns" left-handed metamaterial structure has been proposed. The proposed metamaterial structure is designed at a height of 3.2 mm from the ground plane for L-band (1 GHz-2 GHz) applications. The most interesting feature of the design is the ability of enhancing the gain and total efficiency of the antenna without effecting the other important parameters like bandwidth and directivity. The double negative (DNG) properties of metamaterial $(-mu~ and~ -varepsilon)$ have been proved by simulated $S$ parameters. By using the "different C patterns" metamaterial structure, the return loss of the rectangular microstrip patch antenna is significantly reduced by 24 dB at a resonating frequency of 2 GHz. The proposed antenna is most suitable for wireless local area network (WLAN) application operating at 2 GHz.