公开(公告)号：US20180054179A1

公开(公告)日：2018-02-22

申请号：US15679467

申请日：2017-08-17

申请人： Qorvo US, Inc.

发明人： Kevin J. Gamble ,  Benjamin P. Abbott ,  Alan S. Chen ,  Kurt G. Steiner

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/58 ,  H03H3/08

CPC分类号： H03H9/02228 ,  H01L2224/05001 ,  H03H3/08 ,  H03H3/10 ,  H03H9/02015 ,  H03H9/02149 ,  H03H9/02559 ,  H03H9/14538 ,  H03H9/1457 ,  H03H9/583 ,  H03H2003/0435

摘要： An acoustic wave device includes a piezoelectric layer, an interdigital transducer, and a slow wave propagation overlay over a portion of the interdigital transducer. By providing electrode fingers of the interdigital transducer such that a portion of the width thereof is dependent on an electrode period, a desirable wave mode may be maintained in the acoustic wave device. Further, by varying a width of the slow wave propagation overlay based on the electrode period, the desirable wave mode may be further maintained.

公开(公告)号：US20200274519A1

公开(公告)日：2020-08-27

申请号：US16281629

申请日：2019-02-21

申请人： Qorvo US, Inc.

发明人： Kevin J. Gamble ,  Alan S. Chen

IPC分类号： H03H9/05 ,  H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64

摘要： Reduced-size guided-surface acoustic wave (SAW) resonators are disclosed. Guided-SAW resonators can achieve high acoustic coupling and acoustic quality Q, but may have a larger surface area compared with a traditional temperature compensated (TC)-SAW resonator. In an exemplary aspect, a guided-SAW device is fabricated with a metal-insulator-metal (MIM) capacitor to produce a guided-SAW which has the same high Q with a surface area which is the same or less than traditional TC-SAW resonators.

公开(公告)号：US10476481B2

公开(公告)日：2019-11-12

申请号：US15670066

申请日：2017-08-07

申请人： Qorvo US, Inc.

发明人： Alan S. Chen ,  Kurt G. Steiner ,  Benjamin P. Abbott ,  Taeho Kook ,  Scott Shive ,  Jean Briot

IPC分类号： H03H9/64 ,  H03H9/02 ,  H03H3/08

摘要： Acoustic filtering circuitry includes a piezoelectric layer, a dielectric layer, a plurality of acoustic resonators, and a capacitor. The dielectric layer is over a surface of the piezoelectric layer. The plurality of acoustic resonators each includes a transducer on the surface of the piezoelectric layer such that the transducer is between the piezoelectric layer and the dielectric layer. The capacitor includes a first plate on the surface of the piezoelectric layer such that the first plate is between the piezoelectric layer and the dielectric layer and a second plate over the first plate such that the second plate and the first plate are separated by at least a portion of the dielectric layer.

公开(公告)号：US10886893B2

公开(公告)日：2021-01-05

申请号：US16281629

申请日：2019-02-21

申请人： Qorvo US, Inc.

发明人： Kevin J. Gamble ,  Alan S. Chen

IPC分类号： H03G9/02 ,  H03H9/02 ,  H03H9/05 ,  H03H3/08 ,  H03H9/64 ,  H03H9/145 ,  H03H9/25

摘要： Reduced-size guided-surface acoustic wave (SAW) resonators are disclosed. Guided-SAW resonators can achieve high acoustic coupling and acoustic quality Q, but may have a larger surface area compared with a traditional temperature compensated (TC)-SAW resonator. In an exemplary aspect, a guided-SAW device is fabricated with a metal-insulator-metal (MIM) capacitor to produce a guided-SAW which has the same high Q with a surface area which is the same or less than traditional TC-SAW resonators.

公开(公告)号：US10469050B2

公开(公告)日：2019-11-05

申请号：US15679467

申请日：2017-08-17

申请人： Qorvo US, Inc.

发明人： Kevin J. Gamble ,  Benjamin P Abbott ,  Alan S. Chen ,  Kurt G. Steiner

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/58 ,  H03H3/08 ,  H03H3/10 ,  H03H3/04

摘要： An acoustic wave device includes a piezoelectric layer, an interdigital transducer, and a slow wave propagation overlay over a portion of the interdigital transducer. By providing electrode fingers of the interdigital transducer such that a portion of the width thereof is dependent on an electrode period, a desirable wave mode may be maintained in the acoustic wave device. Further, by varying a width of the slow wave propagation overlay based on the electrode period, the desirable wave mode may be further maintained.

公开(公告)号：US20180041193A1

公开(公告)日：2018-02-08

申请号：US15670066

申请日：2017-08-07

申请人： Qorvo US, Inc.

发明人： Alan S. Chen ,  Kurt G. Steiner ,  Benjamin P. Abbott ,  Taeho Kook ,  Scott Shive ,  Jean Briot

IPC分类号： H03H9/64 ,  H03H3/08 ,  H03H9/02

CPC分类号： H03H9/6489 ,  H03H3/08 ,  H03H9/02535 ,  H03H9/02992 ,  H03H9/6423 ,  H03H9/6483

摘要： Acoustic filtering circuitry includes a piezoelectric layer, a dielectric layer, a plurality of acoustic resonators, and a capacitor. The dielectric layer is over a surface of the piezoelectric layer. The plurality of acoustic resonators each includes a transducer on the surface of the piezoelectric layer such that the transducer is between the piezoelectric layer and the dielectric layer. The capacitor includes a first plate on the surface of the piezoelectric layer such that the first plate is between the piezoelectric layer and the dielectric layer and a second plate over the first plate such that the second plate and the first plate are separated by at least a portion of the dielectric layer.