- 专利标题: BAW/SAW-assisted LC filters and multiplexers
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申请号: US15449357申请日: 2017-03-03
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公开(公告)号: US10284178B2公开(公告)日: 2019-05-07
- 发明人: Dirk Robert Walter Leipold , George Maxim , Marcus Granger-Jones , Baker Scott
- 申请人: Qorvo US, Inc.
- 申请人地址: US NC Greensboro
- 专利权人: Qorvo US, Inc.
- 当前专利权人: Qorvo US, Inc.
- 当前专利权人地址: US NC Greensboro
- 代理机构: Withrow & Terranova, P.L.L.C.
- 主分类号: H03H9/70
- IPC分类号: H03H9/70 ; H03H9/72 ; H03H7/09 ; H03H9/54 ; H03H9/60 ; H03H9/64 ; H03H7/01
摘要:
Embodiments of radio frequency (RF) filtering circuitry are disclosed. In one embodiment, the RF filtering circuitry includes a common port, a second port, a third port, a first RF filter path, and a second RF filter path. The first RF filter path is connected between the common port and the second port and comprises a first pair of resonators and a first acoustic wave resonator. One of the first pair of resonators also includes a second acoustic wave resonator. The second RF filter path is connected between the common port and the third port. The second RF filter path includes a second pair of resonators. The first and second acoustic wave resonators of the first RF filter path increase roll-off greatly with respect to just an LC filter, and thereby allow for an increase out-of-band rejection at high frequency ranges.
公开/授权文献
- US20170257078A1 BAW/SAW-ASSISTED LC FILTERS AND MULTIPLEXERS 公开/授权日:2017-09-07
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