← 返回 JSSC 论文列表JSSC 2010第9期Analog Circuits90nm
Current-Mode WCDMA Channel Filter With In-Band Noise Shaping
提出一种新型管道滤波器，通过带内噪声整形技术实现WCDMA应用中的低噪声和高线性度
32μV带内噪声（2MHz带宽），+36dBm带外IIP3，75dB SFDR，1.25mW功耗
电流模式滤波器WCDMA噪声整形共源共栅线性度优化
▸采用带内噪声整形技术的管道滤波器结构
▸基于交叉连接共源共栅器件的电流模式双二阶单元
▸被动预滤波技术提升带外阻塞信号处理能力
Abstract
A novel class of filters (called pipe filters) that fea-
tures in-band noise reduction is presented and a current mode bi-
quad cell based on cross-connected cascoded devices is introduced.
The presented solution gives in-band high-pass noise shaping and
passive pre-filtering of out-of-band blockers. This results in both
low in-band noise and high out-of-band IIP3. A 4th-order low-
pass prototype in 90 nm CMOS for WCDMA application features
32
V in-band noise (when integrated over the 2 MHz bandwid