Abstract
The absorptive and radiative losses are two fundamental aspects of the electromagnetic responses, which are widely occurring in many different systems such as waveguides, solar cells, and antennas. Here we proposed a metasurface to realize the control of the absorptive and radiative loss and to reduce the radar cross section (RCS) in multi-frequency bands. The anti-phase gradient and absorptive metasurfaces were designed that consists of metallic square patch and square loop structure inserted with resistors, acting as an phase gradient material in the X and Ku band, while behaving as an absorber in the S band. The simulation and experiment results verified the double-band, wideband and polarization-independent RCS reduction by the absorptive and anti-phase gradient metasurfaces.
Highlights
ObjectivesThe main objective of this paper is to design a combination of absorptive and phase gradient metasurfaces that can achieve radar cross section (RCS) reduction at two broad bands
We have proposed the novel metasurface to achieve radar cross section (RCS) reduction at two broad bands
Two different physical mechanisms are adopted to control the backscatter field. Both simulation and experiment results show that the designed metasurface absorbs most of the incoming wave at S band of 2.7–3.5 GHz
Summary
The main objective of this paper is to design a combination of absorptive and phase gradient metasurfaces that can achieve RCS reduction at two broad bands
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