Title :
Current mode allpass/notch and bandpass filter using single CCII
Author_Institution :
Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan
Abstract :
A current mode second-order allpass notch and bandpass filter using a single CCII, two grounded capacitors and four resistors is proposed. The allpass and notch output current signals, taken out through port z of a CCII and having high output impedance, can be obtained by tuning a resistor in the proposed network. The resonance angular frequency and quality factor of the new network have the advantages of low passive sensitivities and are insensitive to the current tracking error of the nonideal CCII.
Keywords :
active filters; all-pass filters; band-pass filters; lumped parameter networks; notch filters; CCII; allpass filter; bandpass filter; current mode filters; current tracking error; grounded capacitors; low passive sensitivities; notch filter; port z; quality factor; resistors; resonance angular frequency; second order filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911126
