摘要
基于翻转电压跟随器(Flipped Voltage Follower,FVF)的拓扑结构,实现了一种低功耗高线性的跨导器,跨导值可由控制电压精确改变。运用此跨导单元设计了一种适用于无线收发机系统的多频带Gm-C低通滤波器。该滤波器是由双二次节级联构成的六阶巴特沃斯型滤波器,可实现70 k Hz,140 k Hz和210 k Hz多频带选择。采用SMIC 0.18μm CMOS工艺设计的滤波器的线性度IIP3大于22.6 d Bm,在1.8 V电源电压下消耗的功耗为1.37 m W。
A low power and high linearity transconductor is presented. It is based on the topology of Flipped Voltage Follower（FVF）, and the transconductor value can be precisely set by the control voltage. A multiband Gm-C Low-Pass Filter（LPF）for wireless transceiver system based on the proposed transconductor is designed. LPF is a 6th-order Butterworth filter formed by 3 Biquads. The filter cut-off frequency can be varied from 70 k Hz, 140 k Hz to 210 k Hz. It is designed with SMIC 0.18 μm CMOS process. The simulation results show that the IIP3 of filter is 22.6 d Bm and it consumes 1.37 m W under a 1.8 V power supply.
出处
《计算机工程与应用》
CSCD
北大核心
2015年第11期266-270,共5页
Computer Engineering and Applications
基金
新一代通信射频芯片技术北京市重点实验室2012年度阶梯计划项目(No.BZ0155)
关键词
低通滤波器
跨导器
低功耗
高线性
多频带
low-pass filter
transconductor
low power
highly linearity
multiband
