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Slot‐array antenna for UHF RFID shelf applications
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- Authors
- Wonkyu Choi, Ji-Hoon Bae, Jong-Suk Chae, Chan-Won Park, Cheolsig Pyo
- Issue Date
- 2013-07
- Citation
- Microwave and Optical Technology Letters, v.55, no.7, pp.1511-1515
- ISSN
- 0895-2477
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- Fractional Bandwidth(FBW), Ground Plane(GP), High frequency(HF), Linearly polarized, Microstrip Line, Radiating Element(RE), Slot array antenna, U-shaped slot, UHF RFID, Ultra-high frequency(UHF), Via-hole