发明申请
- 专利标题: METHOD, SYSTEM, AND APPARATUS FOR INTERPOLATING AN OUTPUT OF AN ANALOG-TO-DIGITAL CONVERTER
- 专利标题(中): 用于插入模拟数字转换器输出的方法,系统和装置
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申请号: US12791694申请日: 2010-06-01
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公开(公告)号: US20110291865A1公开(公告)日: 2011-12-01
- 发明人: Han Henry Sun , Kuang-Tsan Wu , Yuejian Wu , Sandy Thomson , John D. McNicol , David J. Krause
- 申请人: Han Henry Sun , Kuang-Tsan Wu , Yuejian Wu , Sandy Thomson , John D. McNicol , David J. Krause
- 主分类号: H03M7/00
- IPC分类号: H03M7/00
摘要:
A system, method, and apparatus is disclosed for interpolation of an output of an analog to digital converter (ADC) to enable operation of the ADC at a sampling rate that is independent of the sampling rate for a DSP core so as to efficiently enable operation at higher date rates. According to one of the embodiments, an interpolation circuit is coupled between the ADC and DSP core and receives a first plurality of samples of data at the first data rate from the ADC and supplies a plurality of samples of second data at a second data rate to the DSP core; the second data rate being less than the first data rate. According to one of the embodiments, the interpolation circuit includes a memory and a FIR filter circuit having filter tap coefficient values selected to provide attenuation at high frequencies to reduce aliasing noise.