一款增益可调且平坦的超宽带低噪声放大器  

An Ultra-Wideband Low Noise Amplifier with Tunable and Flat Gain

作　　者：陈吉添[1] 张万荣 金冬月[1] 谢红云[1] 杜成孝[1] 黄鑫[1] 刘亚泽 刘硕[1] 赵馨仪 

机构地区：[1]北京工业大学电子信息与控制工程学院,北京100124

出　　处：《电子器件》2017年第2期326-332,共7页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61574010);北京市自然科学基金项目(4142007;4143059);北京市未来芯片技术高精尖创新中心科研基金项目(KYJJ2016008)

摘　　要：设计了一款增益可调且平坦的超宽带低噪声放大器(FTG UWB-LNA)。输入级采用具有新型偏置电路和RLC反馈的共基-共射放大器;输出级采用电流镜偏置的共集放大器;放大级采用新型有源电感与达林顿结构构成的组合电路。实现了增益的可调且平坦以及宽带输入输出匹配。基于WIN 0.2μm GaAs HBT工艺库,对FTG UWB-LNA进行验证,结果表明:在1 GHz～6 GHz频带内,增益S_(21)可以在21.16 dB～23.9 dB之间调谐,最佳增益平坦度达到±0.65 dB;S_(11)小于-10 dB;S_(22)小于-12 dB;FN小于4.08 dB;在4 V的工作电压下,静态功耗小于33 mW。An ultra-wideband low noise amplifier with flat and tunable gain（FTG UWB-LNA）is presented.The common base cascode amplifier with RLC feedback and a novel biasing circuit was used at the input stage;the output stage uses a common-collector amplifier with parallel resistor and current mirror bias;the amplifier stage employs a combinational circuit consisting of a new active inductor load and the Darlington circuit to realize tunable and flat gain and achieve good wideband input and output impedance matching.The FTG UWB-LNA is designed in the standard WIN 0.2μm Ga As HBT process.The gain S_（21） can be tuned between 21.16 dB and 23.9 dB,the optimal gain flatness can be up to ±0.65 dB within a range of 1 GHz～6 GHz frequencies;the S_（11） is better than -10 dB;the S_（22） is better than -12 dB;the F_N is less than 4.08 dB.The static power consumption is less than 33 mW under the operation voltage of 4 V.

关 键 词：低噪声放大器 增益可调且平坦 有源电感 超宽带 

分 类 号：TN722.3[电子电信—电路与系统]