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Active Matrix Integrated Metasurface for 2D Electromagnetic Modulation
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DOI：10.1002/adom.202301631.png)
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Abstract
En 中文
Reconfigurable metasurfaces have attracted widespread attention owing to their dynamic, multifunctional, and intelligent manipulation ability of electromagnetic waves. However, most previous reconfigurable meta-devices work in one-dimension (1D) due to the complex electrical wires and control circuits for two-dimensional (2D) modulation. Here, an active matrix circuit composed of a MOSFET chip and a storage capacitor is introduced into the meta-atom design to realize 2D control of reconfigurable metasurfaces. The number of the control circuits is reduced from M x N to M + N by applying sequential voltage and selecting the row/column. As proof of the scheme, a 10 x 10 active matrix integrated reconfigurable metasurface operating in X-band is experimentally demonstrated. 2D beam scanning and point focusing with focal lengths of 60 mm & 120 mm are verified through 2D phase modulation. The scheme for 2D modulation has great potential in the construction of high-frequency large-scale compact reconfigurable metasurfaces and promises unprecedented progress for wireless telecommunication and microwave detection. A method to realize 2D control of reconfigurable metasurfaces by introducing an active matrix circuit composed of a MOSFET chip and a storage capacitor into the meta-atom design is presented. The number of the control circuits is reduced from M x N to M + N by applying sequential voltage and selecting row/column.image
Keywords:
active matrix integrated metasurfaces
reconfigurable metasurfaces
two-dimensional phase modulation
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