Open AccessAnalysis of the influence of dispersion of metamaterials in a cylindrical Luneberg lens with extended focus
Author(s) -
Yuri G. Pasternak,
Ю Г Пастернак,
Evgeny A. Rogozin,
Evgeny A. Rogozin,
Ruslan E. Rogozin,
Ruslan E. Rogozin,
С. М. Федоров,
С. М. Федоров
Publication year - 2021
Publication title -
fizika volnovyh processov i radiotehničeskie sistemy
Language(s) - English
Resource type - Journals
eISSN - 2782-294X
pISSN - 1810-3189
DOI - 10.18469/1810-3189.2020.23.4.48-55
Subject(s) - metamaterial , optics , lens (geology) , cardinal point , focal length , focus (optics) , azimuth , dispersion (optics) , antenna (radio) , plane (geometry) , materials science , superlens , plasmonic lens , physics , surface plasmon polariton , engineering , telecommunications , geometry , surface plasmon , plasmon , mathematics
Cylindrical Lunebeg lenses allow azimuthal scanning in a wide sector of angles. The article discusses a cylindrical Luneberg lens with an out-of-focus parallel printed circuit boards made of thin fiberglass (FR-4) with an etched H-shaped metamaterial structure. The distribution of the electric field in the azimuthal plane is shown when a linearly polarized plane wave is incident on the lens surface parallel to the printed circuit boards. The dependence of the focal length on the frequency is shown. Conclusions are drawn about the effect of dispersion on the focal length. To clarify the value of the focal length, thedirectional characteristics of the antenna system are considered when the focal length is changed. Directional characteristics are investigated when the feed is rotated in the azimuthal plane. The results presented in the article are planned to be used to create broadband Luneberg lenses from metamaterials.