UHF RFID Reader Antena Using Double Slot Loaded Circular Patch
Radio-frequency identification technology, based on the reader/tag paradigm, is quickly permeating several aspects of everyday life. To allow optimum impedance matching with enhanced CP bandwidth, the microstrip feed technique is employed in this design. The design of a simple UHF (ultrahigh frequency) RFID (radio frequency identification) reader antenna that operates within the 900 MHz band (902—928 MHz) is studied. To allow optimum impedance matching with enhanced CP bandwidth, the proposed antenna can also yield an impedance bandwidth (10-dB return loss) from 880 to 1100 MHz, while good CP performances between 901 to 930 MHz are exhibited.