发明授权
US07999709B2 Continuous-time image-reject filter with discrete-time feedback 有权
具有离散时间反馈的连续图像抑制滤波器

Continuous-time image-reject filter with discrete-time feedback
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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