Electronically tunable fractional-order highpass filter for phantom electroencephalographic system model implementation

The fractional-order model of a phantom electroencephalographic system, at various distances between electrodes, is realized using appropriate decomposition of the rational transfer functions which approximate the highpass filters that describe its dynamics. The main offered benefits, in comparison to the corresponding straightforward implementations of the rational transfer functions, are the capability of monolithic implementation due the minimization of the maximum value of the required capacitances and, also, the reduced power consumption. The performance of the presented filter topologies is evaluated, at post-layout level, using the Cadence design suite. © 2019 Elsevier GmbH