Digital DC blocker filters
Open Access
- 18 February 2021
- journal article
- research article
- Published by Walter de Gruyter GmbH in Frequenz
- Vol. 75 (9-10), 331-339
- https://doi.org/10.1515/freq-2020-0177
Abstract
This paper mathematically investigates a special kind of digital infinite-impulse response (IIR) filters, suitable for filtering out very low frequencies near zero from digital signals. We investigate the transfer functions of such filters from 1st to 3rd order and provide formulas to calculate the filter coefficients from the desired cutoff frequency.Keywords
Funding Information
- European Horizon 2020 Programme (857201)
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