Signal limitations of the current-mode filters employing current conveyors

被引:8
作者
Yuce, Erkan [2 ]
Minaei, Shahram [1 ]
机构
[1] Dogus Univ, Dept Elet & Commun Engn, TR-34722 Istanbul, Turkey
[2] Pamukkale Univ, Dept Elect & Elect Engn, TR-20017 Denizli, Turkey
关键词
signal limitation; current conveyor; current-mode; analog filter;
D O I
10.1016/j.aeue.2007.03.015
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
It is well known that second-generation current conveyors (CCII) are widely used for the realization of second-order current-mode universal filters. A filter with high-quality factor (Q) and gain constant (K) suffers from various signal swing restrictions especially at its angular resonance frequency (coo). This is due to the terminal voltages of the CCIls limited by the power supply voltages and maximum allowable terminal currents of the CCIls. In this paper, signal limitations of the CCII-based current-mode filters are investigated in detail. A filter example is given to exhibit the signal limitations of a universal current-mode filter. The time-domain and frequency-domain results of the proposed filter are also given to verify the theoretical analysis. (c) 2007 Elsevier GmbH. All rights reserved.
引用
收藏
页码:193 / 198
页数:6
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