Dual Band Microstrip Patch Antenna and its Gain Enhancement for X Band and Ku Band Application Using Metamaterial

In this paper an efficient dual band inset fed microstrip patch antenna is presented for X band and Ku band application. The antenna is designed by etching four rectangular complementary split ring resonators in the patch of the conventional microstrip antenna and placing a metamaterial superstrate above the substrate. The superstrate layer made of a 5×5 array of rectangular split ring resonators. The proposed microstrip antenna exhibits a very good performance at both resonant frequencies. Initially a conventional patch antenna is designed to operate at 10 GHz. The proposed antenna is tuned to operate at two resonant frequencies 10 GHz and 15.1 GHz. The proposed antenna is simulated using High Frequency Structure Simulator (HFSS 15:0) that obtains a gain of 8.3067 dB at 10 GHz and 9.6068 dB at 15.1 GHz. The four rectangular CSRR etched in the radiating element (patch) is responsible for the second operating band and the superstrate layer is enhancing the gain of the antenna.