摘要
高线性度低噪声滤波器是通信系统中不可缺少的关键电路。基于电流复用型源极退化运算跨导放大器(Operational transconductance amplifier,OTA)结构,本文提出了一种适用于高速通信系统的5 GHz电流模低噪声Gm-C滤波器。利用电流模滤波器的结构特点和电流复用型源极退化OTA的高能效和高线性度,本文设计的滤波器可在低功耗条件下仍具有良好的噪声和线性度性能。该滤波器采用标准65 nm CMOS工艺,核心面积为0.06 mm^(2)。仿真结果表明,其工作带宽为5 GHz,IIP3为35 d Bm,而功耗仅为3.2 m W。
The high linearity low-noise filter is an indispensable key circuit in the communication system.Based on the structure of current-reuse source-degradation operational transconductance amplifier(OTA),a 5 GHz current-mode low-noise Gm-C filter suitable for high-speed communication systems is proposed.Thanks to the proposed current mode structure and the OTA’s high-power efficiency and high linearity,the filter obtains good noise and high linearity performance with very low power consumption.The filter is designed in standard 65 nm CMOS technology and occupies a core area of 0.06 mm^(2).The simulation results show that the operating bandwidth is 5 GHz,the IIP3 is35 d Bm,and the power consumption is only 3.2 m W.
作者
吴旭
李连鸣
WU Xu;LI Lianming(School of Information Science and Engineering,Southeast University,Nanjing 210096,P.R.China;National Mobile Communication Research Laboratory,Southeast University,Nanjing 210096,P.R.China;Purple Mountain Laboratories,Nanjing 210096,P.R.China)
基金
supported in part by the National Key R&D Program of China(No.2018YFE0205900)
in part by the Natural Science Foundation of Jiangsu Province of China(No.BK20180368)。
