2.4GHz CMOS低噪声放大器的设计

Design of 2.4GHz CMOS Low Noise Amplifier

基于0.18μm CMOS工艺,采用共源共栅源极电感负反馈结构,设计了一个针对蓝牙接收机应用的2.4GHz低噪声放大器(LNA)电路.分析了电路的主要性能,包括阻抗匹配、噪声、增益与线性度等,并提出了相应的优化设计方法.仿真结果表明,该放大器具有良好的性能指标,在5.4mW功耗下功率增益为18.4dB,噪声系数为1.935dB,1dB压缩点为-14dBm.

This paper presents a 2. 4GHz cascode low noise amplifier （LNA） for blue- tooth receiver based on 0.18/1m CMOS technology, analyzes some principal performances including impedance match, noise, gain and linearity, and finally proposes a corresponding optimization design method. The simulation results show that the proposed LNA achieves good performance. It provides a power gain of 18.4dg, a noise figure of 1.935dB, 1dB compression point of -14dBm, and the power consumption being 5.4 mW.