Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A new universal filter using two current-feedback amplifiers is presented. This filter can realise lowpass, bandpass, highpass, notch and allpass filters from the same configuration. It has the following features: orthogonal control of the natural frequency and quality factor by grounded resistors, easy conversion into a voltage-controlled filter, minimum active components, without match components except for allpass applications, low active and passive sensitivities, and cascadability. Experimental results that confirm the theoretical analyses are obtained
Keywords :
Q-factor; active filters; all-pass filters; band-pass filters; feedback amplifiers; high-pass filters; linear network analysis; low-pass filters; lumped parameter networks; notch filters; operational amplifiers; sensitivity analysis; transfer functions; cascadability; current-feedback amplifiers; orthogonal control; quality factor; universal filter; voltage-controlled filter;
