But once the rectangular loop and the original tag antenna are connected to each other as shown in Fig. 3(b), the resonant frequency falls at the required operating frequency which is between 919 to 923 MHz. This is due to the fact that the rectangular loop now act as a radiating patch which will radiate the power received from the meander feed line to the whole patch. Fig.4 and Fig.5 show the reflection coefficient and the current distribution of the unconnected and connected rectangular loop patch respectively.