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Multi-Scale Single-Bit RP-EMS Synthesis for Advanced Propagation Manipulation Through System-by-Design

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A new method for the synthesis of single-bit reconfigurable passive electromagnetic skins (1RP-EMSs) featuring advanced beam shaping capabilities is proposed. By using single-bit unit cells, the multiscale problem of controlling… Click to show full abstract

A new method for the synthesis of single-bit reconfigurable passive electromagnetic skins (1RP-EMSs) featuring advanced beam shaping capabilities is proposed. By using single-bit unit cells, the multiscale problem of controlling 1RP-EMSs is formulated as a two-phase process. First, the macroscale synthesis of the discrete surface current that radiates the electromagnetic (EM) field fitting the user-designed requirements is performed by means of an innovative quantized version of the iterative projection method (QIPM). Subsequently, the meta-atom states of the 1RP-EMS are optimized with a customized implementation of the System-by-Design paradigm to yield a 1RP-EMS that supports such a feasible reference current. A representative set of numerical results is reported to assess the effectiveness of the proposed approach in designing and controlling single-bit meta-atom RP-EMSs that enable complex wave manipulations.

Keywords: system design; single bit; synthesis; bit

Journal Title: IEEE Transactions on Antennas and Propagation
Year Published: 2022

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