公开(公告)号：US20230006543A1

公开(公告)日：2023-01-05

申请号：US17658317

申请日：2022-04-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jeong Kwang LEE ,  Young Hwan CHOO ,  Dong Su KIM

IPC: H02M1/44 ,  H03H1/00 ,  H03H9/64 ,  H02M1/096 ,  H03H9/52

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.