Electromagnetic Vortex Topologies from Sparse Circular Phased Arrays

• URL: http://arxiv.org/abs/2109.12988v2
• Date: Wed, 5 Jan 2022 16:48:19 GMT
• Title: Electromagnetic Vortex Topologies from Sparse Circular Phased Arrays
• Abstract summary: We present a theoretical study of a method for generating vortex states based on coherent superposition of waves from discrete elements of planar phased arrays. We analyze emerging vortex topologies and derive a constraint for the least number of elements needed to generate a vortex with a given leading-order topological charge.
• Score: 3.508346077709686
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Structured vortex waves have numerous applications in optics, plasmonics, radio-wave technologies and acoustics. We present a theoretical study of a method for generating vortex states based on coherent superposition of waves from discrete elements of planar phased arrays, given limitations on an element number. Using Jacobi-Anger expansion, we analyze emerging vortex topologies and derive a constraint for the least number of elements needed to generate a vortex with a given leading-order topological charge.

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