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In addition to LNA (low noise amplifier) noise figure, gain and input matching, its linearity is also an important consideration. An LNA must amplify signal without adding too much noise but also remain linear even when strong signals are received. In the narrowband LNA topology, good values of S-parameters and noise performance are achieved at the expense of linearity. In order to improve LNA linearity,...
In this letter, a 0.1-20 GHz low-power low noise amplifier (LNA) is presented. A novel self-biased resistive- feedback topology is proposed. Two inductors inside the feedback loop and a shunt-peaking inductor are exploited to extend the bandwidth. A PMOSFET with inductive degeneration is chosen as the load to boost the gain while maintaining low noise figure (NF) at high frequencies. A source-degeneration...
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