Open AccessAnalysis of a uniform rectangular array for generation of arbitrary orbital angular momentum (OAM) modes
Author(s) -
Cho Y.H.,
Byun W.J.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.0190
Subject(s) - beamwidth , angular momentum , radiation pattern , optics , physics , antenna (radio) , antenna array , antenna aperture , radiation , circular buffer , aperture (computer memory) , acoustics , engineering , telecommunications , computer science , classical mechanics , programming language
Using the array antenna theory, theoretical radiation and near‐field characteristics of a uniform rectangular array (URA) for high‐gain or wide‐beamwidth orbital angular momentum waves have been rigorously studied. Closed‐form weighting factors of URA elements are derived based on the Hankel transform proposed for aperture antennas. Simulated radiation patterns and near‐field distributions show that a URA configuration is superior to a uniform circular array in terms of antenna gain, beamwidth, and beam‐scanning capability.