摘要
北斗卫星导航系统由我国自主研发,其研制目的是为了在日益严峻的世界环境下巩固我国的军事实力。北斗射频接收芯片是北斗卫星导航系统中整个地面端设备的核心,因此,关于射频接收机芯片的研发工作具有十分重要且实际的意义。文中在基于窄带低噪声放大器理论的基础上,采用TSMC 0.18μm CMOS工艺设计了一种应用于北斗通信系统中的低噪声放大器。放大器采用改进的单转双电路结构,并通过缓冲级电路对差分信号的幅度和相位偏差进行了有效的校正。实验结果表明该电路在2.45GHz～2.55GHz频带内输入回波损耗小于-28dB,噪声系数小于1.1dB,功率增益大于15dB,电压增益高于32dB。
The Beidou satellite navigation system is independently developed by China,its development purpose is to consolidate Chinese military strength in an increasingly grim world environment. The Beidou RF receiver chip is the core of the entire ground-side equipment of the Beidou satellite navigation system,therefore the RF receiver chip＇s R＆D work has important practical significance. Design a low- noise amplifier for Beidou（ COMPASS） navigation satellite system based on the theory of narrow-band low noise amplifier by using TSMC 0.18pan CMOS process. The amplifier uses the improved single to differential circuit structure, and through effective buffer stage circuit corrects the differential signal amplitude and phase deviation. The experimental results show that the circuit in 2.45GHz - 2. 55GHz band,the input return loss is less than -28dB,noise figure is less than 1. 1dB, power gain greater than 15dB,voltage gain higher than 32dB.
出处
《计算机技术与发展》
2012年第9期213-216,共4页
Computer Technology and Development
基金
江苏省高校自然研究面上项目(11KJB510019)
关键词
低噪声
放大器
单转双
缓冲级
low noise
amplifier
single to differential
buffer stage
