Implementation of low pass filters with real opamps: Where is the limit?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F19%3A63523999" target="_blank" >RIV/70883521:28140/19:63523999 - isvavai.cz</a>
Result on the web
<a href="https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2019/032.pdf" target="_blank" >https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2019/032.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2507/30th.daaam.proceedings.032" target="_blank" >10.2507/30th.daaam.proceedings.032</a>
Alternative languages
Result language
angličtina
Original language name
Implementation of low pass filters with real opamps: Where is the limit?
Original language description
Active filters based on RC components together with operational amplifiers are quite common functional blocks to be met across different branches of electronics design. During the past, their topology has settled on several well-known and effective solutions. As an example, Sallen-Key or Multiple Feedback topology can be named. The designers can find a huge number of “cookbooks”. According to them they can find help with designing their filters. However, the theory described in these cookbooks usually fits ideal operational amplifiers in a good manner, but, unfortunately, the real parameters of the operational amplifiers may spoil the real behaviour of the design significantly. This problem occurs especially at very high frequencies that are typical for injection of electromagnetic interferences into low frequency signal lines. The authors of this paper have tested several antialiasing (low-pass) filter designs and provide results of measurement at real filters compared to the simulations. Moreover, they provide a discussion on why the results of the simulation do not fit the real behaviour of the filters and suggest improvements in the design of the low pass filters in that way so their utility value was improved.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/LO1303" target="_blank" >LO1303: Promoting sustainability and development of the Centre for Security, Information and Advanced Technologies (CEBIA-Tech)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Annals of DAAAM International 2019
ISBN
978-3-902734-23-5
ISSN
2304-1382
e-ISSN
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Number of pages
6
Pages from-to
248-253
Publisher name
DAAAM International Vienna
Place of publication
Vienna
Event location
Zadar
Event date
Oct 23, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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