Invention Grant
- Patent Title: Front-end circuit having a tunable filter
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Application No.: US15120082Application Date: 2014-06-06
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Publication No.: US09866266B2Publication Date: 2018-01-09
- Inventor: Juha Ellä , Edgar Schmidhammer
- Applicant: Snaptrack Inc.
- Applicant Address: US CA San Diego
- Assignee: SnapTrack, Inc.
- Current Assignee: SnapTrack, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Patterson & Sheridan, L.L.P.
- Priority: DE102014102701 20140228
- International Application: PCT/EP2014/061870 WO 20140606
- International Announcement: WO2015/128007 WO 20150903
- Main IPC: H04B1/40
- IPC: H04B1/40 ; H04B1/48 ; H04B1/00 ; H03H7/01 ; H03H7/46

Abstract:
A front-end circuit with a tunable filter is disclosed. In an embodiment, the front end circuit includes a first signal path connected to an antenna connection, a first filter arranged in the first signal path, wherein the first filter is tunable within a first frequency range, and an extra signal path and a first fixed filter arranged therein, wherein the first fixed filter has a passband for an extra frequency band, wherein the first fixed filter is not tunable, and wherein the extra frequency band is arranged outside or inside the first frequency range. The front end circuit further includes a narrowband antenna tuner configured to be set to a respective tunable frequency range, wherein the narrowband antenna tuner is arranged between the first filter, the first fixed filter and the antenna connection in the first and second signal paths.
Public/Granted literature
- US20170077983A1 Front-End Circuit Having a Tunable Filter Public/Granted day:2017-03-16
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