Ka-band modulated metasurface antennas fabricated by metal additive manufacturing

Abstract : Metasurface (MTS) antennas present an equivalent modulated reactance tensor in the aperture plane, which is designed to gradually radiate a surface-wave (SW). The modulation results in the (-1) indexed Floquet mode entering the visible region, thus becoming a leaky-wave (LW) mode with curvilinear phase-contour. In this paper, we explore the use of metallic MTSs to synthesize the reactance tensor required to obtain an objective radiation pattern, with a given shape and polarization. The proposed structure is particularly well suited to fabrication by metal additive manufacturing. We have designed several metallic MTS antennas, verifying their performance by full-wave simulations. We have also fabricated a prototype, and the measurements have validated the simulation results.
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David Gonzalez-Ovejero, Mauro Ettorre, Nacer Chahat, Ronan Sauleau, Stefano Maci, et al.. Ka-band modulated metasurface antennas fabricated by metal additive manufacturing. 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), Aug 2018, Waterloo, Canada. ⟨10.1109/antem.2018.8572964⟩. ⟨hal-02083895⟩



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