一种超宽带伪差分跨导放大器  

An ultra-high frequency pseudo differential operational transconductance amplifier

作　　者：蒋培晨[1] 周健军[1] 莫亭亭[1] 

机构地区：[1]上海交通大学微电子学院,上海200240

出　　处：《信息技术》2008年第9期92-94,98,共4页Information Technology

摘　　要：提出了一种超宽带伪差分运算跨导放大器。该放大器通过共模前馈和共模反馈方法使得运算跨导放大器单元具有更为简单的电路结构,易于设计验证并能够稳定工作在较高频率。以该放大器作为单元电路,可以实现截止频率到达百兆赫兹的高频连续时间滤波器,并作为中频滤波器用于射频接收机中。A pseudo differential operational transconductance amplifier is proposed in this paper. The simplified structure, using the topology of common mode feedfoward and feedback, is able to work at ultra-high frequency, and prone to the circuits realization and verification, This circuit can be applied to the radio frequency receiver as basic cell for IF filter.

关 键 词：连续时间滤波器 伪差分运算跨导放大器 共模前馈 共模反馈 

分 类 号：TN85[电子电信—信息与通信工程]