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Performance of the low-noise amplifier (LNA) determines the sensitivity, impedance matching (reflection), and other critical parameters of the receiver. Carrier aggregation (CA) in LTE-Advanced and upcoming 5G requires the LNA to support multiple-outputs without degrading its dynamic range (DR) performance and thus requires the architectural changes. In this paper, several LNA topologies are presented...
This paper presents an active balun topology with differential imbalance correction and noise cancelling schemes. The imbalance correction scheme can effectively ameliorate both the magnitude and phase errors induced by circuit asymmetry, parasitic and layout mismatch. Noise cancelling exists in each individual stage, which leads to good noise performance. With sufficient gain and low noise figure,...
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