Power noise filter and supply modulator including the same
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United States of America Patent
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Oct 8, 2024
Grant Date -
Jan 5, 2023
app pub date -
Apr 7, 2022
filing date -
Apr 7, 2022
priority date (Note) -
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Abstract
A power noise filter and a supply modulator including the same, and a wireless communication device including the power noise filter are provided. The power noise filter includes a band stop filter and a low pass filter. The band stop filter includes an inductor and a first capacitor, which are connected in parallel between first and second nodes. The first node receives a first voltage, which is filtered by the band pass filter to thereby generate a second voltage at the second node. The first low pass filter includes the inductor and a second capacitor, which has one end connected to the second node and an opposite end connected to a ground source.
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