A miniaturized compact wideband partial ground antenna used in rfid systems

الملخص EN

this paper, a new compact waveguide-fed flexible antenna is presented for RFIDapplications.

This antenna is operated at the resonant frequency of 2.45 GHz.

Theproposed antenna is designed with small size on (43 × 30) mm2 epoxy substratematerial type (FR4) used in the proposed antenna that has a dielectric thickness of 1.6mm, the relative permittivity of 4.3 and tangent loss of 0.025 where the FR4 dielectriccombines good electrical features, price, and availability.

The return loss is less than−10 dB in the frequency interval (2.1 − 2.98) GHz.

The maximum gain of the proposedantenna is 2.47 dB.

The proposed antenna has a wide impedance bandwidth, and anomnidirectional radiation pattern with a small size has been achieved.

The overall sizeof the compact antenna are (43 × 30 × 1.67) mm3.

The Computer SimulationTechnology (CST) microwave studio software is used for simulation.