Tunable elliptic filters using multioutput current controlled conveyors

Abstract

6 7 + 9 9 3 ) 1 / ) 0L )4;30;.8 L K nal flow graph of leapfrog filter and then realize each L promised. Unfortunately, several floating resistors are J /L J ) K the prototype RLC filters one by one. Current con-'KK3 K K J ) K J 6 L K J . L J /L K /99933 = J # Consider the general ladder structure in figure 1. Here RLC filter. The characteristic of this structure can be > J J J OGN L J

A New Type of Current Conveyor and its Application in Fully Balanced Differential Current-Mode Elliptic Filter Design

“…The interest in designing current-mode circuits mainly emanates from their speed advantages, higher bandwidth, wider dynamic range, and relatively simpler circuitry [1][2][3][4][5][6][7][8]. Current conveyor (CCII) element and its modifications can be used in single-ended [1][2][3][4][5][6][7] or differential filters [8].…”

“…Current conveyor (CCII) element and its modifications can be used in single-ended [1][2][3][4][5][6][7] or differential filters [8]. Differential current mode filters play an important part in telecommunications due to their ability of suppressing even harmonics, as well as common-mode interference.…”

“…So its applications are limited. On the other hand, the advantages of elliptic filters are well known, no other filters of equal order can have a faster transition in gain between the passband and the stopband, for the given values of the ripple, therefore, the selective character of elliptic filter is very attractive [23][24][25][26][27][28]. Various OTA based [23][24][25] elliptic filters were presented.…”