基于新型可调谐高线性OTA的高阶滤波器设计  

Design of a High Order Filter Based on Novel Tunable High Linearity OTA

作　　者：刘政[1] 王卫东[1] 

机构地区：[1]桂林电子工业学院,广西壮族自治区桂林市541004

出　　处：《电子工程师》2006年第10期39-40,43,共3页Electronic Engineer

基　　金：广西壮族自治区自然科学基金(D200111)

摘　　要：基于交叉耦合的原理提出了一种高线性可调谐的OTA(跨导运算放大器),并以它为基本部件设计了一个巴特沃思(Butterworth)七阶滤波器。OTA的增益可以通过调节独立外接电源进行控制。基于新型OTA的高阶滤波器电路结构简单,无源器件接地,容易集成。This paper proposes a high linearity tunable OTA based on cross-coupling principle, and then a Butterworth seventh order filter is designed. The gain of OTA could be controlled by an independent voltage source. The filter based on OTA has simple structure, and all passive elements are grounded and the filter is easy to realize.

关 键 词：模拟集成电路 跨导运算放大器 巴特沃思滤波器 

分 类 号：TN713[电子电信—电路与系统]