Novel mixed-mode universal biquad configuration

被引:45
|
作者
Singh, V. K.
Singh, A. K.
Bhaskar, D. R.
Senani, R.
机构
[1] Inst Engn & Technol, Dept Elect Engn, Lucknow 226021, Uttar Pradesh, India
[2] Inderprastha Engn Coll, Elect & Commun Engn Dept, Ghaziabad 201010, UP, India
[3] Jamia Millia Islamia, Fac Engn & Technol, Dept Elect & Commun Engn, New Delhi 110025, India
[4] Netaji Subhas Inst Technol, Div Elect & Commun Engn, New Delhi 110075, India
来源
IEICE ELECTRONICS EXPRESS | 2005年 / 2卷 / 22期
关键词
current-feedback operational amplifiers; biquad filters; current-mode circuits; circuit theory and design; mixed-mode filters;
D O I
10.1587/elex.2.548
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Although a variety of CFOA-based biquads have been known in the literature, any CFOA-based circuit capable of realising universal biquad filters in all the four possible modes i.e. voltage-mode, current-mode, trans-admittance-mode and trans-impedance-mode, has not been reported in the literature so far. In this paper, a novel configuration has been presented, which realises all the five generic filter functions (namely, low-pass, band-pass, high-pass, notch and all-pass) from the same circuit in all the four possible modes, employing only four-Current feedback operational amplifiers (CFOA) along with two grounded-capacitors as desirable for Integrated Circuit implementation. The workability of the circuit has been confirmed by hardware implementation based on AD844 type CFOAs.
引用
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页码:548 / 553
页数:6
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