一种可重构CMOS低噪声放大器的设计  

Design of a reconfigurable CMOS low noise amplifier

作　　者：程鹏 段吉海[1] 徐卫林[1] 韦保林[1] CHENG Peng;DUAN Jihai;XU Weilin;WEI Baolin(Guangxi Key Laboratory of Precision Navigation Technology and Application,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学广西精密导航技术与应用重点实验室

出　　处：《桂林电子科技大学学报》2019年第2期103-107,共5页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(61161003,61264001,64466004);广西精密导航技术与应用重点实验室主任基金(DH201501)

摘　　要：为了解决多模卫星导航系统中信号接收问题,基于0.18μmCMOS工艺设计了一种可重构低噪声放大器。低噪声放大器采用PCSNIM和电流复用技术,避免了巴伦的使用,并完成了单端至差分的转换,同时也解决了双频段的噪声和阻抗匹配问题。仿真结果表明,电源电压为1.8V,LNA在1.2GHz/1.57GHz频段的增益分别为14dB/19dB,噪声系数分别为1.6dB/2.0dB,三阶截点分别为-9.5dBm/-7.5dBm,输入反射系数分别为-13dB/-32dB,输出反射系数分别为-33dB/-35dB。该电路具有良好的性能指标满足导航系统的标准,具有一定的使用价值。To solve the problem of signal reception in multi-mode satellite navigation systems, A reconfigurable low noise amplifier based on 0.18 μm CMOS process is designed. Adoption of PCSNIM and reuse current technology, single-end to differential is completed instead of balun, Matching of noise and impedance are settled. With supply voltage of 1.8V, the simulated results demonstrated that the LNA achieves a gain of 14 dB/19 dB on 1.27 GHz/1.57 GHz, the noise figure of 1.6 dB and 2.0 dB, the input reflection factor of -13 dB and -32 dB, the third-order intercept point of -9.5 dBm and -7.5 dBm , the output reflection factor of -33 dB and -35 dB at two frequency bands, respectively.

关 键 词：低噪声放大器 电流复用技术 双频段 PCSNIM 

分 类 号：TN386.1[电子电信—物理电子学]