Ultra-wide band and high efficient Polarization converting metasurface employing Bell-shaped unit cell for RCS reduction
Year: 2024
Type: article
Abstract: Polarization is a dominant parameter regarding communication systems in recent times. The standard polarization techniques can be used only to a certain extent because of their huge size and limited bandwidth constraints. A design of bell-shaped polarization converting metasurface (PCMS) is presented in this paper which is highly efficient for Radar cross section (RCS reduction) and also operates in ultra-wideband. The designed PCMS attains a polarization conversion ratio of >90 % by demonstrating the transformation of the linear polarization wave to its orthogonal counterpart. The PCMS is arranged in a triangular chessboard configuration to reduce the RCS. RCS reduction is obtained by achieving destructive interference, accomplished by two unit cells. The two unit cells, PCMS and its mirror will have a phase difference of 180 ± 37° The phase cancellation is obtained by rotating and arranging the proposed PCMS at 90°, 180° and 270° RCS reduction is obtained in a frequency range from 4 GHz to 24.8 GHz with 144 % FBW. This PCMS is verified experimentally. A good agreement is found between the simulation and the experimental results.
Source: Results in Engineering
Authors: Sukumar Vidhya, Madurakavi Karthikeyan
Institution: Vellore Institute of Technology University
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,490
OpenAlex ID: W4404058849