Finite-Aperture Microwave Bessel Beams with Vortex Twisting, Fracturing, and Dynamic Phase-Shift Control

Yurchenko V., ÇİYDEM M., Koc S.

Progress In Electromagnetics Research C, vol.124, pp.53-68, 2022 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 124
  • Publication Date: 2022
  • Doi Number: 10.2528/pierc22071106
  • Journal Name: Progress In Electromagnetics Research C
  • Journal Indexes: Scopus, Applied Science & Technology Source, Compendex, INSPEC
  • Page Numbers: pp.53-68
  • Middle East Technical University Affiliated: Yes


© 2022, Electromagnetics Academy. All rights reserved.—Finite-aperture microwave vortex beams of various structures in the near-, middle-, and far-field propagation zones have been simulated. The decay of external sidelobes leading to the end of non-diffractive propagation within a fraction of the near-field zone is observed. A ring source of the vortex beams with phase-shift and frequency-sweep control of angular modes and polarization patterns through the use of patch antenna arrays of varying polarization is suggested. A new form of the beam wavefront variation with azimuthal undulation has been proposed that allows one to significantly diversify and dynamically control the beam structure. The consequences of a limited number of antenna patches in a circular array have been considered. The effects of a gradual drop of radiation power along the array and the use of multiple feed points for improving the beams have been simulated.