发明申请
US20090219186A1 FILTER CIRCUIT, RECEIVER USING THE SAME, AND FILTERING METHOD USING THE SAME
审中-公开
过滤器电路，使用它的接收器和使用其的滤波方法
- 专利标题： FILTER CIRCUIT, RECEIVER USING THE SAME, AND FILTERING METHOD USING THE SAME
- 专利标题（中）： 过滤器电路，使用它的接收器和使用其的滤波方法
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申请号： US12366712申请日： 2009-02-06
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公开(公告)号： US20090219186A1公开(公告)日： 2009-09-03
- 发明人: Hiroaki Ishihara , Masahiro Hosoya , Hidenori Okuni
- 申请人： Hiroaki Ishihara , Masahiro Hosoya , Hidenori Okuni
- 优先权： JPP2008-050945 20080229
- 主分类号： H03M1/12
- IPC分类号： H03M1/12
摘要：
According to an aspect of the present invention, there is provided a filter circuit including: an ADC that converts a first analog signal into a first digital signal; a digital filter that extracts an interference component from the first digital signal and generates a second digital signal; a DAC that converts the second digital signal into a second analog signal; a delayer that delays the first analog signal based on a delay caused in the second analog signal and generates a delayed first analog signal; a subtractor that subtracts the second analog signal from the delayed first analog signal and generates an output signal; and a controller that controls the digital filter based on a remaining interference component that is remaining in the output signal.
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