【摘要】 基于TSMC 0.18μm RF CMOS工艺,设计了一款工作在3 GHz～5 GHz的增益连续可调CMOS低噪声放大器。采用RC电阻负反馈式结构以获得良好的输入匹配和噪声性能。通过改变第二级MOS管的偏流,在工作频段内获得了36.5 dB的连续增益可调。更多还原

【Abstract】 A CMOS variable gain ultra-wideband low noise amplifier(LNA) operating in 3 ～5 GHz frequency range was presented based on TSMC 0.18 μm standard RF CMOS process.A resistive negative feedback structure was used to achieve excellent input match in the band and to optimize the noise performance.By controlling the bias current of the second stage,a continuous gain tuning range of 36.5 dB was achieved.更多还原