Compact dual-band microstrip antenna for handheld RFID reader

In this paper, dual-band radio frequency identification (RIFD) reader antenna is proposed. The reader antenna operates at 2.45GHz and 5.8GHz. It comprises two resonances the first in the radiation patch, and the second in the protruding stub in the ground plan. The matching techniques that use stub tuning are used in this work. The radiating patch of the present compact antenna has the dimension of 15.6mm × 8.8mm. A good impedance bandwidth of 148.48MHz and 204.85MHz has been achieved for 2.45GHz and 5.8GHz respectively. The proposed antenna is simple, compact in size, providing a good gain and broadband impedance matching.