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A reconfigurable triple-band antenna operating at 17.21, 23.54 and 29.27 GHz using MEMS switches is presented. The reconfigurable triple-band dipole is firstly designed assuming ideal switches (ON/OFF). The effects of the two MEMS switches on different cantilever bridge materials on the antenna performance are studied. The design is performed using the 3D electromagnetic simulator. Optimization of MEMS bridge materials is required to obtained low insertion loss.