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    ACOUSTIC RESONATOR FILTER
    1.
    发明申请
    ACOUSTIC RESONATOR FILTER 有权

    公开(公告)号：US20220286111A1

    公开(公告)日：2022-09-08

    申请号：US17476797

    申请日：2021-09-16

    申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD.

    发明人： Hyun Min HWANG

    IPC分类号： H03H9/56 ,  H03H9/17 ,  H03H9/54

    摘要： An acoustic resonator filter includes a series portion including at least one series acoustic resonator electrically connected, in series, between first and second ports of the acoustic resonator filter configured to pass a radio-frequency (RF) signal from the first port to the second port, a shunt portion including a plurality of shunt acoustic resonators electrically connected to each other, in anti-series, between one node of the series portion and a ground, and a DC voltage terminal configured to generate a DC voltage across at least one of the plurality of shunt acoustic resonators by an electrical connection of the DC voltage terminal to a first electrode of the at least one of the plurality of shunt acoustic resonators and to a different second electrode of the at least one of the plurality of shunt acoustic resonators. A DC voltage may be generated across the at least one series acoustic resonator.

    BULK ACOUSTIC WAVE FILTER
    2.
    发明申请
    BULK ACOUSTIC WAVE FILTER 有权

    公开(公告)号：US20230125049A1

    公开(公告)日：2023-04-20

    申请号：US17675058

    申请日：2022-02-18

    申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD.

    发明人： Hyun Min HWANG ,  Won HAN ,  Jeong Hoon RYOU ,  Jae Hyoung GIL ,  Dong Hoe KIM

    IPC分类号： H03H9/56 ,  H03H9/205 ,  H03H9/13

    摘要： A bulk acoustic wave filter includes series resonators connected to a series arm, and parallel resonators connected to a parallel arm connected to the series arm. Two or more of the series resonators are disposed in parallel on the series arm, and each includes a substrate, a lower electrode on the substrate, a piezoelectric layer on the lower electrode, and an upper electrode on the piezoelectric layer, wherein, when an active region in which the lower electrode, the piezoelectric layer, and the upper electrode overlap each other is viewed from above, a centroid of the active region and a center of a rectangle defining an aspect ratio of the active region match each other, and when the active region is viewed from above, the active region has a shape of polygon symmetrical with respect to at least one axis passing through a center of the rectangle defining the aspect ratio.

    ACOUSTIC RESONATOR FILTER
    4.
    发明申请
    ACOUSTIC RESONATOR FILTER 有权

    公开(公告)号：US20220286112A1

    公开(公告)日：2022-09-08

    申请号：US17476814

    申请日：2021-09-16

    申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD.

    发明人： Hyun Min HWANG

    IPC分类号： H03H9/56 ,  H03H9/02 ,  H03H9/13

    摘要： An acoustic resonator filter includes a series portion of the acoustic resonator filter, the series portion including at least one series acoustic resonator electrically connected, in series, between first and second ports of the acoustic resonator filter configured to pass a radio-frequency (RF) signal from the first port to the second port, and a shunt portion of the acoustic resonator filter, the shunt portion including a plurality of shunt acoustic resonators electrically connected between one node of the series portion and a ground, where a difference between anti-resonant frequencies of each of the plurality of shunt acoustic resonators is smaller than a difference between resonant frequencies of each of the plurality of shunt acoustic resonators.