Title :
Cascadable current-mode single CCII biquads
Author :
Liu, S.I. ; Tsao, H.W. ; Wu, Junyong
Author_Institution :
Dept. of Electr. Eng., Nat Taiwan Univ., Taipei, Taiwan
Abstract :
A new configuration for the realisation of current-mode single-CCII-biquad (SCB) filters with high output impedance is presented. It can synthesise lowpass, bandpass, highpass, notch, and allpass filtering functions with a single CCII connected to five passive RC one-port elements. The quality factor, Q, and the central frequency, omega 0, of the proposed SCBs are insensitive to the current tracking error of the CCII. These SCBs have the advantages of low passive sensitivities and independently adjustable omega 0 or Q.
Keywords :
active filters; cascade networks; network synthesis; sensitivity analysis; transfer functions; SCB; allpass filtering functions; bandpass synthesis; cascadable current-mode single CCII biquads; central frequency; current tracking error; high output impedance; highpass synthesis; low passive sensitivities; lowpass synthesis; notch filter synthesis; passive elements; quality factor; second generation current conveyors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901296
