An experimental study on designing of a dual band antenna using CSRR structure with a single band antenna

The complementary split ring resonator (CSRR) is a widely used planar metamaterial structure in the design of microstrip antennas and other microstrip elements. In this work, a study has been made on converting a single band microstrip antenna into a dual band microstrip antenna by etching a CSRR structure from the ground plane below the patch. Initially, a simulation based study of the phenomenon is performed for a rectangular patch antenna. Then the same phenomenon is studied on an antenna of arbitrary shape. Using this approach, a 2.4 GHz antenna for IEEE 802.11 standard WLAN application has been designed, simulated and fabricated.