Invention Grant
- Patent Title: BAW/SAW-assisted LC filters and multiplexers
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Application No.: US15449357Application Date: 2017-03-03
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Publication No.: US10284178B2Publication Date: 2019-05-07
- Inventor: Dirk Robert Walter Leipold , George Maxim , Marcus Granger-Jones , Baker Scott
- Applicant: Qorvo US, Inc.
- Applicant Address: US NC Greensboro
- Assignee: Qorvo US, Inc.
- Current Assignee: Qorvo US, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow & Terranova, P.L.L.C.
- Main IPC: H03H9/70
- IPC: H03H9/70 ; H03H9/72 ; H03H7/09 ; H03H9/54 ; H03H9/60 ; H03H9/64 ; H03H7/01

Abstract:
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.
Public/Granted literature
- US20170257078A1 BAW/SAW-ASSISTED LC FILTERS AND MULTIPLEXERS Public/Granted day:2017-09-07
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