Frequency‐Multiplexed Parallel Differentiation in Subwavelength Planar Metastructure

Analog Computing In their Research Article (10.1002/sstr.202500350), Yue Li, Pengyu Fu, and Hanfei Bu present a metastructure processing unit that performs frequency-multiplexed parallel differentiation within a planar subwavelength structure. Through the precise optimization of small pixel metamaterial, the wideband electromagnetic dispersion of device can be finely controlled, which enables real-time edge detection on multiple input signals, demonstrating high computational density and compactness for integrated electromagnetic signal processing.