应用于卫星导航射频芯片的可重构有源 RC 滤波器  

Reconfigurable Active RC Filter for Satellite Navigation RF IC

作　　者：段琴 陈志坚[2] 高山[2] DUAN Qin;CHEN Zhijian;GAO Shan(Guangzhou Haige Communications Group Incorporated Company,Guangzhou 510663,China;South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广州海格通信集团股份有限公司,广东广州510663 [2]华南理工大学微电子学院,广东广州510640

出　　处：《通信电源技术》2022年第18期97-99,共3页Telecom Power Technology

摘　　要：提出1种应用于卫星导航射频芯片的三阶巴特沃斯可重构有源RC低通滤波器,其3 dB带宽覆盖范围为0.2~40 MHz,增益覆盖范围为0~30 dB。采用SMIC 55 nm CMOS工艺设计,在1.3 V的电源电压下,滤波器功耗为6.5 mW。后仿真结果显示,在增益和带宽为30 dB和14 MHz时,此滤波器的三阶输入交调截止点(Third Order Input Intercept Point,IIP3)为7.2 dBm,无杂散动态范围(Spurious Free Dynamic Range,SFDR)为55.1 dB。A third-order Butterworth reconfigurable active RC low-pass filter applied to satellite navigation RF chips is proposed with a 3 dB bandwidth coverage of 0.2 MHz to 40 MHz and a gain coverage of 0 dB to 30 dB.Using SMIC 55 nm CMOS process design,the filter power consumption is 6.5 mW at the supply voltage of 1.3 V.The simulation results show that when the gain and bandwidth are 30 dB and 14 MHz,the Third Order Input Intercept Point(IIP3)of the filter is 7.2 dBm.Spurious Free Dynamic Range(SFDR)is 55.1 dB.

关 键 词：低通滤波器 有源RC滤波器 可变增益放大器 

分 类 号：TN713[电子电信—电路与系统]