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December 2005 [Components] Resistive Loading Enhances LNA Stability Designing an effective low noise amplifier (LNA) requires a high-performance transistor. But most suitable devices are potentially unstable at microwave frequencies, leading to oscillation. Fortunately, resistive loading at the input or output of the transistor can prevent oscillation at the frequency of interest for all passive source and load terminations, 1- 4 but stability at other frequencies remains problematic, and out-of-band oscillations ... |
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