【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。更多还原

【Abstract】 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.更多还原