基于电流控制传送器的电可调梯形滤波器  

Electronically Tunable Ladder Filters Based on Current Controlled Conveyors

作　　者：曹丽华[1] 彭良玉[1] 周细凤[2] 黄满池[1] 

机构地区：[1]湖南师范大学物理与信息科学学院,湖南长沙410081 [2]湖南师范大学工学院,湖南长沙410081

出　　处：《现代电子技术》2007年第1期184-186,共3页Modern Electronics Technique

基　　金：湖南省教育厅资助项目(04C346;05C404)

摘　　要：利用电流控制传送器(CCCII)实现浮地和接地电感,而无源器件只有接地电容,通过调制CCCII的偏置电流,可以调整等效电感的大小。使用这种等效电感来设计5阶梯形Butterworth低通和高通滤波器时使用较少的无源器件,并且中心频率具有电可调性。进行PSPICE分析,仿真结果表明设计是可行的。Floating inductance and grounded inductance simulation circuits with grounded capacitance using only secondgeneration Current Controlled Conveyors （CCCIIs） as active elements are introduced. These circuits are modified by using current controlled conveyors, yielding electronically tunable inductances. Fifth - order RLC Butterworth low - pass filter and high - pass filter which retain a minimum requirement of passive elements and have an advantage of electronically tunable center frequency will be introduced. PSPICE simulation results show that the proposed method is practical.

关 键 词：电流控制传送器 电流模式 低通滤波器 高通滤波器 

分 类 号：TN713[电子电信—电路与系统]