S波段四通道低中频接收电路芯片的设计和实现  

Design and implement of four-channel low-IF receiver chip in S band

作　　者：王鑫华[1] 陈明辉[1] 魏恒[1] 王旭东[1] 赵建欣[1] WANG Xin-hua;CHEN Ming-hui;WEI Heng;WANG Xu-dong;ZHAO Jian-xin(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《微电子学与计算机》2021年第1期77-82,共6页Microelectronics & Computer

基　　金：河北省自然科学基金(18960202D)。

摘　　要：基于有源相控阵雷达的应用,设计了一款S波段四通道低中频接收芯片,射频接收信号为2.2~2.5 GHz,中频信号为2~6 MHz可调.为满足T/R组件低成本、轻量化的要求,芯片集成了四条接收通道、本振通路和数字控制等模块.针对多通道芯片容易产生耦合的现象,采用了多种物理布局方式提高通道隔离.采用SMIC 0.13μm CMOS工艺进行了设计仿真和流片,芯片面积为3.91 mm×3.66 mm。测试结果表明,四通道低中频接收电路增益调整范围≥58.29 dB,通道噪声系数≤9.25 dB,通道隔离度≥32.2dB.Based on the application of the active phased array radar,this paper presents a low-immediate frequency(IF)receiver in S band with four channels and 2.2~2.5 GHz radio frequency(RF)input and 2~6 MHz IF.The receiver features a high integration to improve the T/R modules cost and weight properties,consisting of four channels and local path(LO)and digital control modules.In order to compensate for crosstalk among four channels,multiple layout techniques are introduced.The circuit was fabricated based on the SMIC 0.13μm CMOS process,occupying a die area of 3.91 mm×3.66 mm.The experimental results show that the gain adjustment range of four-channel low-IF receiver achieves≤9.25 dB NF,the dynamic gain is above 58.29 dB and the channel isolation is above 32.2 dB.

关 键 词：四通道 低中频接收机 无源混频器 镜像抑制滤波器 通道隔离度 

分 类 号：TN43[电子电信—微电子学与固体电子学]