Abstract :
A new configuration for realising high input impedance lowpass, bandpass and highpass filters simultaneously by using three current-feedback amplifiers, three grounded capacitors, three grounded resistors and one floating resistor is presented. The proposed circuit offers the following features: realisation of lowpass, bandpass and highpass signals from the same configuration, no requirements for component matching conditions, orthogonal control of ω0 and Q, the use of grounded capacitors, low active and passive sensitivities and low output impedance
Keywords :
Q-factor; active filters; band-pass filters; electric impedance; feedback amplifiers; high-pass filters; low-pass filters; bandpass filter; current-feedback amplifiers; grounded capacitors; high input impedance; highpass filter; low output impedance; lowpass filter; orthogonal control; voltage-mode filters;
