Title :
Compact near-field folded-loop antenna for UHF RFID handheld reader
Author :
Ming-Jui Chang ; Hua-Ming Chen
Author_Institution :
Chen Inst. of Photonics & Commun., Nat. Kaohsiung Univ. of Appl. Sci., Kaohsiung, Taiwan
Abstract :
A compact folded-loop antenna is proposed for near-field operations in the ultra-high frequency (UHF) band, which can be generated a strong and uniform magnetic field in a near-field zone of the folded-loop. The folded-loop with a one-wavelength perimeter is printed on the same side of FR4 substrate. The fabricated compact antenna with an overall size of a dimension of 50 × 50 × 0.8 mm3, achieves a reading zone of 30 × 30 mm2 with good impedance matching and uniform magnetic field distribution over the bandwidth of 919-932 MHz. The proposed antenna is suitable for handheld radio frequency identification (RFID) reader applications.
Keywords :
UHF antennas; loop antennas; magnetic fields; radiofrequency identification; FR4 substrate; UHF RFID handheld reader; compact near-field folded-loop antenna; handheld radio frequency identification reader; impedance matching; one-wavelength perimeter; ultra-high frequency band; uniform magnetic field distribution; Antenna measurements; Couplings; Magnetic field measurement; Magnetic fields; Radiofrequency identification; UHF antennas; Folded-loop antenna; Handheld reader; Near-field coupling; UHF RFID;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026553
