LOW-NOISE AMPLIFIER (LNA) WITH HIGH POWER SUPPLY REJECTION RATIO (PSRR)
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United States of America Patent
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Issued Date -
Feb 23, 2023
app pub date -
May 16, 2022
filing date -
May 16, 2022
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Abstract
A low-noise amplifier includes a low-noise amplifier stage and a filtering and biasing stage. The low-noise amplifier stage receives an input signal and provides a first output signal in response thereto. The low-noise amplifier stage includes a gain element for proving the first output signal, and at least one lowpass filter circuit in series between a first power supply voltage terminal and the gain element having a conductivity determined by lowpass filtering a signal at a bias terminal, and a filtering and biasing stage having an input for receiving the first output signal, and an output for providing a second output signal, and at least one cascode element having a first current conduction path coupled in series between the bias terminal and the output, and having a predetermined filter characteristic.
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