MOVEMENT AVERAGE FILTER BASED ON CHARGE SAMPLING AND MOVEMENT AVERAGE FILTERING METHOD USING SAME

摘要

The present invention relates to a movement average filter allowing selecting a filter characteristic of a necessary form by varying a filter coefficient for the movement average filter based on charge sampling so that an interference signal such as an interference wave, etc. can be efficiently removed, and a movement average filtering method using the same. To achieve this, the movement average filter according to the present invention comprises a voltage-current convertor which converts an input voltage signal (VIN) to an input current signal (IRF) to be outputted; and a first sampling unit which includes a first 1-unit sampler, an α-unit sampler and a second 1-unit sampler that respectively have sampling capacitor banks for performing the charge sampling for the input current signal (IRF) and are connected in parallel between an output end of the voltage-current converter and an output end of a filtering signal, wherein the sampling capacitor ratio of the sampling capacitor banks of the first 1-unit sampler, the α-unit sampler and the second 1-unit sampler is 1:α:1, and wherein α is adjusted to have a value of between 1 and 2.;COPYRIGHT KIPO 2014;[Reference numerals] (142a,142b,142c,142d,142e,146a,146b,146c,146d,146e) 1-unit sampler;(144a,144b,144c,144d,144e) 慣-unit sampler