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Slot‐array antenna for UHF RFID shelf applications
Author(s) -
Choi Wonkyu,
Bae JiHoon,
Chae JongSuk,
Park ChanWon,
Pyo Cheolsig
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27653
Subject(s) - ground plane , microstrip , ultra high frequency , microstrip antenna , slot antenna , electrical engineering , microwave , bandwidth (computing) , patch antenna , radio frequency identification , optics , acoustics , antenna (radio) , engineering , physics , telecommunications , computer science , computer security
This article presents a linearly polarized slot‐array antenna that consists of a slot series‐fed by a microstrip line for radio frequency identification (RFID) shelf applications in the ultra‐high frequency band in which the end of the microstrip line is shorted to the ground plane by a via‐hole. The radiating element is a U‐shaped slot etched in the ground plane on one side of a substrate and the microstrip line for feeding is etched on the other. The designed 6 × 3 array antenna has the near‐field distribution of electric field intensity from 0.5 to 3.36 V/m for RFID shelf applications. The fractional bandwidth for a reflection coefficient of less than −10 dB is approximately 5.5% at 920 MHz, ranging from 892 to 943 MHz. The antenna installed in the RFID shelf stably reads pharmaceutical products with various package options on the shelf. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1511–1515, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27653