Title :
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
fDate :
7/7/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2422212