TY - JOUR A2 - Luo, Guo Qing AU - Hossain, Md. Ababil AU - Ferdous, Md. Saimoom AU - Chowdhury, Shah Mahmud Hasan AU - Abdul Matin, Md. PY - 2014 DA - 2014/02/11 TI - Novel Dual Band Microstrip Circular Patch Antennas Loaded with ENG and MNG Metamaterials SP - 904374 VL - 2014 AB - Novel design of a dual band microstrip circular patch antenna loaded with ENG (ε negative) metamaterial has been shown in the first section. Using ENG metamaterial instead of the conventional dielectric, unconventional TM δ10 ( 1 < δ < 2 ) mode was produced to yield a dual band performance. Optimized parameters such as permittivity (ε 1) and filling ratio ( η ) of metamaterials were selected with the aid of a MATLAB based parameter optimization algorithm, developed for all these sort of patch antennas. In the second section, a dual band circular patch antenna loaded with MNG (µ negative) metamaterial has been reported. An unconventional modified TM δ10 ( 0 < δ < 1 ) mode has been produced along with conventional TM110 mode due to using MNG metamaterial. Here also the optimum values of permeability (µ1) and filling ratio ( η ) for these sorts of patch antennas have been calculated from a MATLAB based parameter optimization algorithm. Both the proposed antennas provide good and resonance and satisfactory radiation performances (directivity, radiation efficiency, and gain) with a dual band performance. SN - 1687-5869 UR - https://doi.org/10.1155/2014/904374 DO - 10.1155/2014/904374 JF - International Journal of Antennas and Propagation PB - Hindawi Publishing Corporation KW - ER -