Journal
IEEE ACCESS
Volume 11, Issue -, Pages 128970-128978Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2023.3333526
Keywords
Gaseous plasma antennas; reflective surfaces; dual-band; Ku-band; Ka-band
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The numerical design of a plasma-based dual-band reflective surface is investigated in this work. By controlling the plasma density and reconfiguring the conventional metallic surface, independent steering of signals in Ku-band and Ka-band is demonstrated.
The subject of this work is the numerical design of a plasma-based dual-band reflective surface. The proposed concept consists of a series of cylindrical plasma discharges placed on top of a reconfigurable surface made of conventional metallic patches. The possibility to independently control the steering of two signals, one in Ku-band (12.5 GHz) and the other in Ka-band (27.5 GHz), with a frequency ratio larger than 2, is proven. The signal at a lower frequency is controlled via the plasma density, while the one at a higher frequency is reconfigured via the conventional metallic surface. Notably, the larger the difference between the two working frequencies, the more a plasma-based reflecting surface suits dual-band operations.
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