Title:	Active-RC Filters Suitable as Antialiasing and/or Reconstruction Filters
Authors:	Brtník, Bohumil
Citation:	2019 International Conference on Applied Electronics: Pilsen, 10th – 11th September 2019, Czech Republic, p.21-24.
Issue Date:	2019
Publisher:	Západočeská univerzita v Plzni
Document type:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35507
ISBN:	978–80–261–0812–2 (Online) 978–80–261–0813–9 (Print)
ISSN:	1803–7232 (Print) 1805-9597 (Online)
Keywords:	struktura filtru s pásmovým průchodem;struktura low-pass filtru;skutečný operační zesilovač;frekvenční charakteristika;snížení útlumu při vysokých frekvencích
Keywords in different language:	low-pass filter structure;band-pass filter structure;real operational amplifier;frequency response;decreasing of the attenuation at the high frequencies
Abstract in different language:	The discrete time signal processing circuit requires an anti-aliasing filter at the input and a reconstruction filter at the output, generally. In this paper, selected basic structures of biquads are described and compared with a view to the degradation of the attenuation over the transient frequency of the operational amplifier. Concretely, low-pass and bandpass Sallen-Key, Huelsman (i.e. multi feedback) and non-cascade filter structures are confronted with the limits of a real operational amplifier. Firstly, the reasons for the degradation of the attenuation are explained theoretically. Secondly, these conclusions are verified by simulations. These simulations were performed by spice-like circuit simulator MicroCap version 11.
Rights:	© Západočeská univerzita v Plzni
Appears in Collections:	Applied Electronics 2019 Applied Electronics 2019

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