InAlAs/InGaAs/InP基PHEMTs小信号建模及低噪声应用
投稿时间:2018-01-30  修订日期:2018-03-08  点此下载全文
引用本文:刘军,于伟华,杨宋源,侯彦飞,崔大胜,吕昕.InAlAs/InGaAs/InP基PHEMTs小信号建模及低噪声应用[J].红外与毫米波学报,2018,37(6):683~687].LIU Jun,YU Wei-Hua,YANG Song-Yuan,HOU Yan-Fei,CUI Da-Sheng,LYU Xin.Small signal model and low noise application of InAlAs/InGaAs/InP-based PHEMTs[J].J.Infrared Millim.Waves,2018,37(6):683~687.]
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作者单位E-mail
刘军 北京理工大学 毫米波与太赫兹技术北京市重点实验室 lj_bit@163.com 
于伟华 北京理工大学 ywhbit@bit.edu.cn 
杨宋源 北京理工大学  
侯彦飞 北京理工大学  
崔大胜 北京理工大学  
吕昕 北京理工大学  
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:利用改进的小信号模型对采用100nmInAlAs/InGaAs/InP工艺设计实现的PHEMTs器件进行建模, 并设计实现了一款W波段单片低噪声放大器进行信号模型的验证。为了进一步改善信号模型低频S参数拟合差的精度, 该小信号模型考虑了栅源和栅漏二极管微分电阻, 在等效电路拓扑中分别用Rfs和Rfd表示.为了验证模型的可行性, 基于该信号模型研制了W波段低噪声放大器单片.在片测试结果表明:最大小信号增益为14.4dB@92.5GHz, 3dB带宽为25GHz@85-110GHz.而且, 该放大器也表现出了良好的噪声特性, 在88GHz处噪声系数为4.1dB, 相关增益为13.8dB.与同频段其他芯片相比, 该放大器单片具有宽3dB带宽和高的单级增益.
中文关键词:InAlAs/InGaAs/InP,赝高电子迁移率晶体管(PHEMTs), 小信号模型,毫米波和亚毫米波,单片微波集成电路(MMIC),低噪声放大器
 
Small signal model and low noise application of InAlAs/InGaAs/InP-based PHEMTs
Abstract:This paper presents an improved small-signal model and a W-band monolithic low noise amplifier (LNA) using 100 nm InAlAs/InGaAs/InP-based high electron mobility transistors (HEMT) technology.For improving the fitting accuracy of S-parameters in low frequency, the small-signal model takes into account differential resistances of gate-to-source and gate-to-drain diodes, which modeled by resistances Rfsand Rfd.A W-band LNA monolithic millimeter-wave integrated circuit (MMIC) has been designed and fabricated based on this model to verify the feasibility of this model.The amplifier is measured on-wafer with a small-signal peak gain of 14.4 d B at 92.5 GHz and 3-dB bandwidth from 85 to 110 GHz.In addition, the MMIC also exhibits an excellent noise characteristic with the noise figure of 4.1 dB and the associate gain of 13.8 d B at 88 GHz.This MMIC amplifier shows wider 3-dB bandwidth and higher per-stage gain than others results at the similar band.
keywords:InAlAs/InGaAs/InP, PHEMTs, small-signal model, millimeter and submillimeter, MMIC, LNA
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