Compact tag antenna for UHF active RFID applications. Issue 7 (9th January 2017)

• Record Type: Journal Article
• Authors: Lu, Jui-Han; Liou, Zi-Hao
• Editors: Skrivervik, Anja; Riva, Carlo; Foged, Lars
• Is Part Of: International journal of microwave and wireless technologies. Volume 9:Issue 7(2017)
• Page Start: 1427
• Page End: 1432
• Publication Date: 2017-01-09
• Subjects: Tag, -- UHF, -- Active RFID system; Wireless communication systems -- Periodicals; Microwave circuits -- Periodicals; Radio frequency -- Periodicals; 621.381305
• DOI: 10.1017/S1759078716001409
• Languages: English
• ISSNs: 1759-0787

Abstract

Abstract : By introducing an L-shaped metal plate connecting with the spiral monopole antenna, a planar compact ultra-high-frequency (UHF) tag antenna for radiofrequency identification system is proposed. With the overall antenna size of only 13 × 9 × 1.6 mm 3, the proposed tag antenna provides the measured impedance bandwidth of 12 MHz to comply with Taiwan UHF operating band (922–928 MHz). The measured peak gain and antenna efficiency are approximately −1.1 dBi and 27% for Taiwan UHF band, respectively. Meanwhile, the measured reading distance can approach 250 m. Good tag sensitivity is obtained across the desired frequency band.