Subsystem of Phased Array Antennas With Adaptive Beam Steering in the Near-Field RFID Applications

Author

Hsi-Tseng Chou ; Ming-Yu Lee ; Chia-Te Yu

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

14

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1746

Lastpage

1749

Abstract

An antenna subsystem is presented for RFID reader applications at 2.45 GHz in the near-zone tag detection. The subsystem is programmable to adaptively steer the radiation beam from one spot to another inside the target zone, and allows the RFID to achieve a better signal reception by changing the beam patterns along the horizontal cut. The created beams have narrow spots, and may potentially reduce the interference by the electromagnetic scattering from the nearby metal structures. An antenna prototype is examined to validate the feasibility.

Keywords

UHF antennas; antenna phased arrays; antenna radiation patterns; beam steering; electromagnetic wave scattering; radiofrequency identification; radiofrequency interference; RFID reader; adaptive beam steering; electromagnetic scattering; frequency 2.45 GHz; near-zone tag detection; nearfield RFID applications; phased array antenna subsystem; signal reception; Antenna arrays; Arrays; Beam steering; Noise measurement; Radiofrequency identification; Antenna arrays; RFID; beam steering; near-field focus;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2422212

Filename

7086020