基于毫米波管的北斗三号RDSS低噪声放大器设计  

Design of BDS-3 RDSS low noise amplifier based on millimeter wave tube

作　　者：黄仕锦 赖松林[1] 王宇楠 Huang Shijin;Lai Songlin;Wang Yunan(School of Physics and Information Engineering,University of Fuzhou,Fuzhou 350108,China;Ningde Branch of China Mobile Communications Group Fujian Co.,Ltd.,Ningde 352000,China)

机构地区：[1]福州大学物理与信息工程学院,福建福州350108 [2]中国移动通信集团福建有限公司宁德分公司,福建宁德352000

出　　处：《电子技术应用》2020年第3期5-9,13,共6页Application of Electronic Technique

基　　金：福建省科技厅高校产学合作项目(2019H6007);福州市科技合作项目(2018-G-89)

摘　　要：现有北斗信号接收机在S频段上低噪放方案,满足增益条件下噪声系数在1.5 dB^1.7 dB,噪声性能仍可进一步优化。方案基于NPN宽带硅锗射频晶体管工艺,设计了一款基于高带宽毫米波管芯的低噪声放大器。放大器采用两级共轭匹配实现电路噪声与增益的最佳平衡;并利用LDO电路线性稳压输出实现电源噪声最小化。经过ADS软件仿真、Altium designer制板及Agilent噪声分析仪的实测表明,其单级放大器噪声系数最低可达0.4 dB,在2.492 GHz频点下,方案最大增益为32 dB,对应的噪声系数为1.23 dB。该低噪放方案应用于北斗用户接收机前端,可有效提高系统噪声性能,提升信号接收效率。The existing Beidou signal receiver has a low-noise amplifier scheme in the S-band, and the noise figure is between1.5 dB^1.7 dB under the condition of meeting the gain requirements and the noise performance can be further optimized.The scheme studies a low noise amplifier(LNA) based on a high-bandwidth millimeter wave tube.The tube is based on NPN broadband silicon germanium RF transistor process.Amplifier uses two-stage conjugate matching to achieve the best balance between circuit noise and gain, and uses LDO circuit linear regulated output to minimize power supply noise.ADS software simulation, Altium de-signer board and actual measurement of Agilent noise analyzer show that it ′s single-stage amplifier has a minimum noise figure of 0.4 dB.At 2.492 GHz, the maximum gain of the solution is 32 dB, and the corresponding noise figure is 1.23 dB.The low-noise amplifier scheme is applied to the front end of Beidou user receiver, which can effectively improve the system noise performance and improve the signal receiving efficiency.

关 键 词：北斗三号卫星接收机 低噪放 ADS仿真 毫米波管芯 

分 类 号：TN722.3[电子电信—电路与系统]