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1.发明申请公开(公告)号：US20200373911A1
公开(公告)日：2020-11-26
申请号：US16881285
申请日：2020-05-22
发明人： Yiliu Wang , Yasufumi Kaneda , Xianyi Li , Kwang Jae Shin , Stephane Richard Marie Wloczysiak , Jiansong Liu , Nan Wu
摘要： A ladder filter comprises a plurality of series arm bulk acoustic wave resonators electrically connected in series between an input port and an output port of the ladder filter and a plurality of shunt bulk acoustic wave resonators electrically connected in parallel between adjacent ones of the plurality of series arm bulk acoustic wave resonators and ground, at least one of the plurality of shunt bulk acoustic wave resonators including raised frame regions having a first width, at least one of the plurality of series arm bulk acoustic wave resonators having one of raised frame regions having a second width less than the first width or lacking raised frame regions.
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公开(公告)号：US20240235518A1
公开(公告)日：2024-07-11
申请号：US18396294
申请日：2023-12-26
CPC分类号： H03H9/02102 , H01Q1/243 , H03H9/542 , H03H9/547
摘要： A filter module comprises a first terminal, a second terminal, and a filter disposed along each signal path extending from the first terminal to the second terminal, the filter including a plurality of series resonators and a plurality of shunt resonators disposed between the series resonators and a ground, at least one resonator among the plurality of series resonators and the plurality of shunt resonators being a first type of resonator with a temperature compensating layer for better temperature coefficient of frequency, at least one resonator among the plurality of series resonators and the plurality of shunt resonators being a second type of resonator without a temperature compensating layer.
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3.发明授权公开(公告)号：US11601113B2
公开(公告)日：2023-03-07
申请号：US16881285
申请日：2020-05-22
发明人： Yiliu Wang , Yasufumi Kaneda , Xianyi Li , Kwang Jae Shin , Stephane Richard Marie Wloczysiak , Jiansong Liu , Nan Wu
摘要： A ladder filter comprises a plurality of series arm bulk acoustic wave resonators electrically connected in series between an input port and an output port of the ladder filter and a plurality of shunt bulk acoustic wave resonators electrically connected in parallel between adjacent ones of the plurality of series arm bulk acoustic wave resonators and ground, at least one of the plurality of shunt bulk acoustic wave resonators including raised frame regions having a first width, at least one of the plurality of series arm bulk acoustic wave resonators having one of raised frame regions having a second width less than the first width or lacking raised frame regions.
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