发明授权
- 专利标题: Continuous-time image-reject filter with discrete-time feedback
- 专利标题(中): 具有离散时间反馈的连续图像抑制滤波器
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申请号: US12534650申请日: 2009-08-03
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公开(公告)号: US07999709B2公开(公告)日: 2011-08-16
- 发明人: Omid Oliaei
- 申请人: Omid Oliaei
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Ingrassia Fisher & Lorenz, P.C.
- 主分类号: H03M3/00
- IPC分类号: H03M3/00
摘要:
Apparatus are provided for converting a discrete-time analog signal to a continuous-time analog signal. A module comprises a digital-to-analog converter and a filtering arrangement coupled between the digital-to-analog converter and an output node. The digital-to-analog converter converts a digital signal to a discrete-time analog signal. The filtering arrangement comprises a forward signal arrangement having an input configured to receive the discrete-time analog signal and a feedback signal arrangement coupled to the forward signal arrangement. The feedback signal arrangement generates a discrete-time feedback signal at the input of the forward signal arrangement based on one or more continuous-time analog signals from the forward signal arrangement. The forward signal arrangement generates the continuous-time analog output signal at the output node based on a difference between the discrete-time analog signal and the discrete-time feedback signal.
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