基于卫星导航系统的低噪声放大器设计  

The Design of Low Noise Amplifier for Satellite Navigation System

作　　者：陈莽[1] 张更[1] 

机构地区：[1]北京航天长征飞行器研究所,北京100076

出　　处：《航天控制》2018年第1期66-68,74,共4页Aerospace Control

摘　　要：设计了一种具有S波段陷波电路的低噪声放大器,应用于GPS的天线接收系统中。在复杂的电磁环境中,具有抑制S波段遥测信号的干扰,同时接收微弱的GPS卫星导航信号的功能。工作频段在1.5GH(1.7GH的范围内,该低噪声放大器具有优异的性能:噪声系数小于1.5d B,增益为33d B,对遥测信号干扰抑制大于20d B。A low noise amplifier is designed with trap circuit for S band, which can help to suppress the strong telemetry signal of S band and receive the weak GPS satellite navigation signal under complex electromagnetic environment. It is mainly used in GPS-antenna systems, in the frequency band from 1.5GHz to 1.7GHz,the LNA exhibits high performance, in which the noise figure is lower than 1.5dB, the gain is 33dB, suppression of telemetry signal interference is more than 20dB.

关 键 词：低噪声放大器 增益 陷波电路 卫星导航 

分 类 号：TN722.3[电子电信—电路与系统]