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引用次数: 6
摘要
本文提出了一种基于标准0.35 μ m SiGe技术的2.4 GHz电流复用低噪声放大器(LNA)的设计方案。为了在窄带宽下实现良好的输入匹配，采用了感应源退化LNA拓扑。采用电流复用结构，实现了低功耗高增益。为了提供良好的隔离性和稳定性，采用级联放大器作为电流复用拓扑的一部分。在给定的配置下，实现了低噪声、高增益和稳定性之间的良好平衡。优化后的LNA具有−21.18 dB的输入回波损耗(S11)、−47.51 dB的高反向隔离(S12)、23.54 dB的极高电压增益(S21)、−15.93 dB的输出回波损耗(S22)、2.7 dB的噪声系数和3.3 V时的5 mA功耗。所提出的LNA具有较高的电路稳定性参数B1f=979.6 m, K=7.658。
In this work a design of a 2.4 GHz current reuse low noise amplifier (LNA) in a standard 0.35 µm SiGe technology is presented. In order to achieve good input matching for narrow bandwidth the inductive source degeneration LNA topology is used. Low power consumption with higher gain is obtained using current reuse configuration. In order to provide good isolation and stability cascode amplifier, as a part of current reuse topology, is used. For given configuration, good trade-off between low noise, high gain and stability has been achieved. Optimized LNA has −21.18 dB input return loss (S11), high reverse isolation of −47.51 dB (S12), very high voltage gain (S21) of 23.54 dB, −15.93 dB output return loss (S22), noise figure of 2.7 dB, and a power consumption of 5 mA at 3.3 V. The LNA presented offers high circuit stability parameters B1f=979.6 m and K=7.658.
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