| 摘要 |
A recurring noise filter for removing from a signal noise generated by parasitic coupling from a switching network. The filter contains an input filter, a sampling switch and an output filter. The input filter is a low pass filter which receives a signal containing noise generated by parasitic coupling from a switching network. The sampling switch is connected between the low pass filter and an output filter, with the sampling switch activating in response to the recurring switching of said switching network to sample the signal during the interval at which said noise does not occur within the signal. The output filter removes signals generated by the sampling switch from the sampled signal thereby generating a noise-filtered signal.
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