Title :
Near-field antenna for RFID smart shelf in UHF
Author :
Choi, Wonkyu ; Kim, Jeong-Seok ; Bae, Ji-Hoon ; Choi, Gilyoung ; Chae, Jong-Suk
Author_Institution :
Electron. & Telecommun. Res. Inst. (ETRI), Daejeon, South Korea
Abstract :
This paper presents the design of a near-field reader and tag antennas in UHF that can be used for various smart shelves. The tag antenna is designed by introducing an ldquoSrdquo-shaped or ldquo+rdquo-shaped slot to the circular patch and the reader one is a rectangular slot array fed by a microstrip line. These antennas operated in UHF near-field are more reliable in many RFID applications where reading distance is not the major factor. Electric coupling concept between the reader and tag antenna is employed for near-field communication.
Keywords :
UHF antennas; microstrip lines; radiofrequency identification; slot antenna arrays; RFID smart shelf; UHF antennas; circular patch; electric coupling; microstrip line; near field antenna; rectangular slot array; tag antennas; Antenna feeds; Couplings; Impedance; Microstrip antenna arrays; Microstrip antennas; Radiofrequency identification; Slot antennas; Tagging; UHF antennas; Voltage;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171866
