MOVING AVERAGE FILTER BASED ON CHARGE SAMPLING AND MOVING AVERAGE FILTERING METHOD USING THE SAME

摘要

The present invention relates to a movement average filter based on charge sampling and a moving average filtering method using the same. The moving average filter includes a voltage-current converter and a first sampling unit. The voltage-current converter converts an input voltage signal into an input current signal and outputs the input current signal. The first sampling unit includes a first 1-unit sampler, an α-unit sampler, and a second 1-unit sampler connected in parallel between an output terminal of the voltage-current converter and a filtered signal output terminal, wherein each of the first 1-unit sampler, the α-unit sampler, and the second 1-unit sampler has a sampling capacitor bank for performing charge sampling. A ratio of sampling capacitances of sampling capacitor banks of the first 1-unit sampler, the α-unit sampler, and the second 1-unit sampler is 1:α:1, wherein a is adjusted to have a value between 1 and 2.