Open AccessHorn antennas for generating radio waves bearing orbital angular momentum by using spiral phase plate
Author(s) -
Wei Wenlong,
Mahdjoubi Kourosh,
Brousseau Christian,
Emile Olivier
Publication year - 2016
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0064
Subject(s) - angular momentum , french horn , spiral (railway) , physics , optics , phase (matter) , radio wave , feed horn , radiation , radiation pattern , electromagnetic radiation , acoustics , engineering , telecommunications , antenna (radio) , classical mechanics , periscope antenna , mechanical engineering , quantum mechanics
The design of two new horn antennas for the generation of radio waves bearing orbital angular momentum (OAM) is presented. The OAM mode ℓ = 1 or −1 is generated by combining the guided modes of a circular waveguide with a spiral phase plate. The authors present here two structures to generate OAM wave based on TE 11 and TM 01 modes. The resulting magnitude and phase patterns of the electrical field and the radiation patterns evidence the presence of waves carrying OAM.