Log-domain realization of Fractional-Order Nonlinear Energy Operator (FNEO)

Implementation of the Fractional-Order Nonlinear Energy Operator employing the Log-Domain technique is demonstrated in this paper. The better performance of Fractional-Order Nonlinear Energy Operator compared to conventional Integer-Order Nonlinear Energy Operator in terms of extracting spikes from noise has been verified in the paper. As per the authors best knowledge, it is for the first time that the Fractional-Order Nonlinear Energy Operator is presented in the open literature. The Fractional-Order Nonlinear Energy Operator was designed at a supply voltage of 0.5V and the power consumption of the circuit was 109.3nW. The performance of the system has been evaluated using MOS transistor parameters provided by the Taiwan Semiconductor Manufacturing Company (TSMC) 130-nm complementary MOS (CMOS) process.