Reflective Intelligent Surfaces (RIS) could play a pivotal role in the implementation of a smart electromagnetic environment. However, achieving efficient and simple reconfigurability of RIS and their deployment in real-world environments remain challenging tasks. In this contribution, we discuss a possible solution to reduce the complexity of RISs by exploiting the properties of composite vortices and moving the reconfigurability to the illuminating field. In this way, static RISs could be deployed, whose scattering patterns could be manipulated by controlling the beam-width of the impinging field.
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Barbuto et al. (2024) studied this question.
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