This paper examines the design performance of metamaterial (MTM) microstrip patch antennas (MSPA) for multiband applications. The double square loaded reactive impedance surface (DS-RIS) metamaterial unit cell are analyzed for C-Band antenna designing. The metasurface/metasubstrate of MSPA is formed by array of DS-RIS unit cells. Radiation characteristics of Square and triangle shape patches are studied using these metasurfaces. The overall dimensions of antennas are 20*20mm2. It is observed that square and triangular shape patches show resonance at three frequencies at 4.5, 6.4 & 7.3GHz in C-Band with directive gain of more than 5dBi. © Research India Publications.