A metamaterial based broadband microstrip antenna

In this paper, a broad bandwidth and high gain rectangular patch antenna using planar-patterned metamaterial concept is proposed. Top patch has seperated micro triangular patterns with periodic gaps while the ground plane etched with crossed strip-line gaps. The patterned metal patch and ground plane form a coupled capacitive-inductive circuit of negative index metamaterial. Extended bandwidth from a few hundred megahertz to a few gigahertz is demonstrated. In addition, experimental and theoretical power reception performances of metamaterial and patch antennas for different selected frequencies are compared.