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Wide Angle Scanning Circular Polarized Meta-Structured Antenna Array

Chang-Hyun LEE, Jeong-Hae LEE

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Summary :

This paper presents a meta-structured circular polarized array antenna with wide scan angle. In order to widen the scanning angle of array antennas, this paper investigates unit antenna beamwidth and the coupling effects between array elements, both of which directly affect the steering performance. As a result, the optimal array distance, the mode configuration, and the antenna structure are elucidated. By using the features of the miniaturized mu-zero resonance (MZR) antenna, it is possible to design the antenna at optimum array distance for wide beamwidth. In addition, by modifying via position and gap configuration of the antenna, it is possible to optimize the mode configuration for optimal isolation. Finally, the 3dB steerable angle of 66° is successfully demonstrated using a 1x8 MZR CP antenna array without any additional decoupling structure. The measured beam patterns at a scan angle of 0°, 22°, 44°, and 66°agree well with the simulated beam patterns.

Publication
IEICE TRANSACTIONS on Communications Vol.E101-B No.9 pp.2017-2023
Publication Date
2018/09/01
Publicized
2018/03/14
Online ISSN
1745-1345
DOI
10.1587/transcom.2017EBP3443
Type of Manuscript
PAPER
Category
Antennas and Propagation

Authors

Chang-Hyun LEE
  Hongik University
Jeong-Hae LEE
  Hongik University

Keyword