Fig. 3: Experimental demonstration of reconfigurable MPU that solves calculus equations.
From: Reconfigurable metamaterial processing units that solve arbitrary linear calculus equations
a A photograph of the constructed reconfigurable equation solver system without DC and control circuits. This system includes a coupler, power dividers, isolators, differential kernels with different orders, as well as phase reconfigurable components controlled by FPGA. b–d Three different processing kernels are selected and demonstrated. Normalized amplitude of g(t) and s1Kg(t) - s12Kx(t) with an input signal as a sawtooth wave show good consistency, respectively. e Spectrum comparison of G(ω) and s1KG(ω) - s12KX(ω) for different processing kernels 1, 2, and 3. The left and right sides of the equation show a good agreement.
