Open AccessBroadband metasurfaces loaded with non-Foster elements
Author(s) -
Nikita Kalmykov,
Bair Buiantuev,
Dmitry Kholodnyak
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2015/1/012061
Subject(s) - broadband , conductor , bandwidth (computing) , computer science , electrical impedance , bandwidth extension , electronic engineering , materials science , electrical engineering , engineering , telecommunications , audio signal , speech coding , composite material
Metasurfaces have been widely used to design low-profile antennas, thin absorbers, lenses etc. The operational frequency band of a metasurface is rather narrow due to its resonant nature. Loading metasurface unit cells with non-Foster elements allows for remarkable bandwidth extension. In this paper, design of a broadband metasurface to operate as an artificial magnetic conductor is considered. The main issues which influence the bandwidth extension such as implementation of the non-Foster load, minimization of conversion error of a negative impedance converter, and circuit stabilization are addressed.