A Plasmonic Array Architecture for Multi-Beam Spatial Multiplexing at THz Frequencies

A plasmonic array architecture with the ability to generate multiple independent, orthogonal beams at THz frequencies is proposed, analytically modeled and numerically demonstrated. The design leverages novel plasmonic device properties to perform discrete Fourier transform for the spatial domain in the analog regime with reduced complexity, and can be utilized to enable ultra-massive MIMO communications.