一种基于电容中和技术的低功耗宽带VGA设计  

Design of Low Power and Wideband VGA Based on Capacitance Neutralization Technique

作　　者：陈亚西 吴锐 梁兴东 CHEN Yaxi;WU Rui;LIANG Xingdong(Aerospace Information Research Institute,Chinese Academy of Sciences,National Key Laboratory of Microwave Imaging Technology,Beijing 100094,China;University of Chinese Academy of Sciences,School of Electronic,Electrical and Communication Engineering,Beijing 100049,China)

机构地区：[1]中国科学院空天信息创新研究院微波成像全国重点实验室,北京100094 [2]中国科学院大学电子电气与通信工程学院,北京100049

出　　处：《集成电路应用》2024年第4期30-32,共3页Application of IC

摘　　要：阐述一种基于电容中和技术的宽带可变增益放大器(VGA),用于高速通信和高分辨率雷达系统。提出的负电容通路有效地拓展了带宽,并在不同的增益设定下实现平坦的带内增益。仿真结果表明,VGA在增益-2.8~49.4dB调节范围内均实现带宽超过4.0GHz。它的功耗在1V的电源电压下为16.5mW,核心电路面积为0.006 mm^(2)。This paper describes a wideband variable gain amplifier(VGA)based on capacitance neutralization technique for high-speed communications and high-resolution radar systems.The negative capacitance path proposed in this paper effectively compensates the output capacitance of the VGA,thus achieving the bandwidth extension.It ensures a flat gain over a wide bandwidth at different gain settings.The VGA is designed in a standard 65nm CMOS process.The simulation results demonstrate that the VGA achieves a-3dB bandwidth of more than 4.0GHz with a wide gain range from-2.8 to 49.4 dB.It consumes 16.5 mW at a supply voltage of 1V and has a core circuit area of 0.006mm^(2).

关 键 词：通信和雷达系统 可变增益放大器 电容中和技术 宽带 宽增益范围 

分 类 号：TN402[电子电信—微电子学与固体电子学]