Liu T.,Telecommunication Engineering College |
Cao X.,Telecommunication Engineering College |
Gao J.,Telecommunication Engineering College |
Yang Q.,Telecommunication Engineering College |
Li W.,Telecommunication Engineering College
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | Year: 2012
A miniaturized broad bandwidth and high-gain patch antenna is designed and fabricated using the metamaterial concept via the periodically loaded complementary split-ring resonators (CSRRs) on the upper patch and strip-line gaps on the bottom ground plane, respectively. The novel antenna has a much lower resonant center frequency which is obviously reduced about 36.4%, a wider bandwidth which is significantly broadened from about 2.9% to about 39.9%, and also a lower voltage standing wave ratio than the original antenna. Experimental data show a reasonably good agreement between the simulation and measured results. Also, due to the left-handed characteristics of the metamaterial, the effective medium parameters of the substrate of the antenna are affected, which induces the strongest radiation in the horizontal direction instead of the vertical direction of the conventional patch antenna.