Invention Grant
- Patent Title: Tunable RF N-path filter
- Patent Title (中): 可调谐射频N路径滤波器
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Application No.: US14077072Application Date: 2013-11-11
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Publication No.: US09407482B2Publication Date: 2016-08-02
- Inventor: Sudhir Aggarwal , Md Naimul Hasan
- Applicant: Nokia Corporation
- Applicant Address: FI Espoo
- Assignee: Nokia Technologies Oy
- Current Assignee: Nokia Technologies Oy
- Current Assignee Address: FI Espoo
- Agency: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- Main IPC: H04B1/16
- IPC: H04B1/16 ; H04L27/148 ; H03H19/00 ; H04J3/02

Abstract:
Methods and apparatus, including computer program products, are provided for tunable filters. In one aspect there is provided an apparatus. The apparatus may include a bandpass filter comprising a resistive-capacitive configuration of N-path filters tunable to a first center frequency based on at least a first clock frequency; a notch filter comprising a capacitive-resistive configuration of N-path filters tunable to a second center frequency based on at least a second clock frequency; and a combiner coupled to the bandpass filter and the notch filter to combine a bandpass output signal provided by the bandpass filter and a notch output signal provided by the notch filter, wherein the combiner outputs a combined output. Related apparatus, systems, methods, and articles are also described.
Public/Granted literature
- US20150133068A1 TUNABLE RF N-PATH FILTER Public/Granted day:2015-05-14
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