A low-voltage square-root domain n-th order multifunction FLF filter topology
A novel n-th order Follow the Leader Feedback (FLF) multifunction low-voltage filter topology, realized by employing the concept of Square-Root Domain (SRD) filtering, is introduced in this manuscript. The realization of the SRD filter topology is achieved by utilizing the corresponding FLF conventional topology and performing a transposition into SRD, through an appropriate set of complementary operators. As a design example, a 5th-order SRD FLF filter has been designed and its performance has been evaluated through simulation results, where the most important performance factors have been considered.
analogue integrated circuits continuous-time filters multifeedback active filters companding filters square-root domain filters