A novel multifunction modified CFOA based inverse filter

Inverse filter has been a topic of great interest and research. A novel multifunction inverse bi-quad configuration based on modified current feedback operational amplifiers (MCFOAs) and a minimum number of grounded passive elements are presented in this paper. To show the flexibility of the proposed MCFOA inverse Lowpass, inverse Bandpass and inverse Highpass filter functions employing MCFOA are reported. All the passive elements in the proposed scheme are grounded to benefit easier electronic tunability. The layout of the proposed MCFOA is also given. The workability of the proposed inverse filters is demonstrated by PSPICE simulations.