New current mode biquad filters using current followers

Author

Liu, Shen-Iuan ; Chen, Jiann-Jong ; Hwang, Yuh-Shyan

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

42

Issue

7

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

380

Lastpage

383

Abstract

Three new configurations for realizing the current-mode biquad filters using current followers (CF´s) are presented. They can realize the allpass, notch, lowpass, bandpass, and highpass filters. Some of the proposed circuits can be directly cascaded without buffers. Two configurations can generate two kinds of filtering functions simultaneously. The natural frequency ω_o of the proposed filters will be insensitive to the current tracking error of the CF. Experimental results that confirm the theoretical analysis are obtained

Keywords

all-pass filters; band-pass filters; biquadratic filters; cascade networks; high-pass filters; low-pass filters; notch filters; sensitivity analysis; active filters; allpass filters; bandpass filters; cascaded configurations; current followers; current mode biquad filters; highpass filters; lowpass filters; notch filters; Band pass filters; Bandwidth; Current mode circuits; Filtering; Frequency; Oscillators; Passive filters; Signal processing; Transfer functions; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.401150

Filename

401150