Design of phased array antennas with beam switching capability in the near-field focus applications

This study presents the design methodology of a phased array antenna whose radiation will focus in the near zone of array aperture by using microstrip feeding circuits. A beam-forming network based on Butler matrix is also implemented to scan the radiation beam along a target area in the near zone,...

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Bibliographic Details
Published in:IET microwaves, antennas & propagation antennas & propagation, 2015-08, Vol.9 (11), p.1120-1127
Main Authors: Chou, Hsi-Tseng, Yu, Chien-Te
Format: Article
Language:English
Subjects:
antenna feeds
antenna phased arrays
antenna radiation patterns
Antennas
aperture antennas
Apertures
array aperture
array signal processing
beam switching capability
beamforming network
Beams (radiation)
Butler matrix
Circuit design
Computer simulation
energy efficiency
interference suppression
matrix algebra
microstrip antenna arrays
microstrip circuits
microstrip feeding circuits
Microwave antennas
multipath interferences
near‐field focus applications
Networks
numerical simulation
phased array antenna design
Phased arrays
radiation beam
radio‐frequency identification
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Summary:This study presents the design methodology of a phased array antenna whose radiation will focus in the near zone of array aperture by using microstrip feeding circuits. A beam-forming network based on Butler matrix is also implemented to scan the radiation beam along a target area in the near zone, which may improve the energy efficiency and reduce the multipath interferences. The design approach, numerical simulation and experimental measurement over an antenna prototype in the applications of radio-frequency identification are presented to validate the feasibility.
ISSN:1751-8725
1751-8733
1751-8733
DOI:10.1049/iet-map.2015.0034