In order to analyze the effects of different number of meander lines to the resonant frequency, the proposed tag antenna with the same overall dimension but different number of meander lines as shown in Fig. 10 is simulated. From the S Parameter graph in Fig. 11, it can be seenthat increasing the number of meander lines, n will shift the resonant frequency the left. This is because, when the number of meander lines is increased, the inductance and the capacitance of the antenna also will be increased, thus shift the resonant frequency to the lower frequency