Triple-Band Metamaterial-Inspired Antenna Using FDTD Technique for WLAN/WiMAX Applications

摘要

In this article, a triple-band metamaterial (MTM)-inspired antenna has beenrndesigned and analyzed using finite difference time domain technique (FDTD). The proposedrnMTM consists of two L-dumbbell-shaped unit cells, feed, and partial ground plane. The proposedrnantenna shows triple-band characteristics with impedance bandwidths of 10.6, 4.67, andrn26.8% centered at 2.4, 3, and 5.7 GHz, respectively. The first two bands are working at zerothorderrnresonating mode and first-order resonating mode while third is due to series slot and couplingrnbetween feed and ground plane. It offers compact nature with total antenna size of 30 ×rn30 3 1.6 mm~3. The proposed triple-band antenna has been designed and analyzed using FDTDrncode based on convolutional perfectly matched layer boundary conditions and HFSS as well.rnThe prototype antenna has also been fabricated and tested experimentally to validate the simulationrnresults. The proposed antenna exhibits good radiation characteristics throughout thernworking bands.