应用于GPS接收机的宽带低噪声放大器  

Broadband CMOS LNAs for GPS Receiver

作　　者：郭锐[1] 孙金中[1] 谢凤英[1] 

机构地区：[1]中国电子科技集团公司第38研究所,安徽合肥230031

出　　处：《中国集成电路》2012年第6期49-53,共5页China lntegrated Circuit

摘　　要：本文介绍了一种适用于GPS接收机的CMOS宽带低噪声放大器,带宽设计在1.1GHz-1.7GHz。采用源极电感负反馈结构,并在输入端加入了宽带匹配网络来扩展带宽,放大器提供30dB的增益,使用了两级放大,第二级采用了电流复用技术来节省功耗,最后一级使用了源极跟随器,用来阻抗匹配。采用TSMC55nmCMOS工艺,仿真结果表明,噪声系数小于1.3dB,S21大于29dB,S11小于-10dB,1.2V电源供电下功耗为20mW。This paper presents a broadband CMOS LNAs for GPS Receiver, the amplifier bandwidth ranges GHz to 1.7 GHz. The amplifier adopts the source degeneration structure with a bandpass filter at the wideband impedance match. The amplifier has two stages to provide 30 dB gain. The second stage reuse method in order to reduce the current consumption, and the last stage is a source follower impedance match. Implemented in TSMC 55 nm CMOS process; the simulation results shows that no dB. S21 is 29 dB, S11 is -10 dB. The power consumption is 20 mW with 1.2 V supply voltage from 1.1 to make utilizes current to make output ise figure is 1.3

关 键 词：低噪声放大器 宽带 接收机 电流复用 CMOS GPS 

分 类 号：TN722.3[电子电信—电路与系统]