Invention Grant
US08949302B2 Digital front end for oversampled low-IF or zero-IF multimode receivers
有权
用于过采样低中频或零中频多模接收机的数字前端
- Patent Title: Digital front end for oversampled low-IF or zero-IF multimode receivers
- Patent Title (中): 用于过采样低中频或零中频多模接收机的数字前端
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Application No.: US13173365Application Date: 2011-06-30
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Publication No.: US08949302B2Publication Date: 2015-02-03
- Inventor: Javier Elenes
- Applicant: Javier Elenes
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Abel Law Group, LLP
- Main IPC: G06F17/17
- IPC: G06F17/17 ; H04B1/00 ; H03M3/00
Abstract:
A digital radio signal is processed by converting an analog signal to a digital signal, decimating the digital signal using a CIC filter and supplying the decimated digital signal directly to an asynchronous sample rate converter (ASRC). The decimated signal is resampled in the ASRC and the ASRC output is supplied directly to a droop compensation filter to compensate the output of the ASRC. By carefully choosing the response of the CIC filter and the resample rate of the ASRC, aliased artifacts in the pass band can be kept below a threshold magnitude without the need for a channelization filter.
Public/Granted literature
- US20130007082A1 DIGITAL FRONT END FOR OVERSAMPLED LOW-IF OR ZERO-IF MULTIMODE RECEIVERS Public/Granted day:2013-01-03
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