"[F32AB1FC97DD]" . . "Sedl\u00E1\u010Dek, Ji\u0159\u00ED" . "3"^^ . "UNIVERSAL ARC FILTERS FOR ARC OSCILATORS WITH AUTOMATIC SEQUENTIAL FILTRATION"@en . "RIV/00216305:26220/11:PU93360!RIV12-MSM-26220___" . "UNIVERSAL ARC FILTERS FOR ARC OSCILATORS WITH AUTOMATIC SEQUENTIAL FILTRATION" . "There are situations, when it is not possible to use standard types of filters, mainly because of demands on using of digital tuning of complex filter and concurrently usage of higher amount of transfer functions, which can be low pass LP, high-pass HP, band-pass BP, band-reject BR, but also low or high-pass notch LPN / HPN and allpass AP. For this purpose, we mostly use 2nd order ARC filters, which contain three or more operational amplifiers (OA). Concerning these blocks, tuning or control of this filter is usually the easiest. Except very familiar known filters as Akerberg Mossberg, Kervin Huelsman Newcomb or Towa Thoma, there is a further amount of circuit connections of universal ARC filters, which enable to realize the transfer function of biquad. The article mainly deals with some other circuits, which are not so familiar, but can be also successfully used as universal filters. These filters realizing required circuit functions with the possibility of tuning of basic parameters of the c"@en . "26220" . . "There are situations, when it is not possible to use standard types of filters, mainly because of demands on using of digital tuning of complex filter and concurrently usage of higher amount of transfer functions, which can be low pass LP, high-pass HP, band-pass BP, band-reject BR, but also low or high-pass notch LPN / HPN and allpass AP. For this purpose, we mostly use 2nd order ARC filters, which contain three or more operational amplifiers (OA). Concerning these blocks, tuning or control of this filter is usually the easiest. Except very familiar known filters as Akerberg Mossberg, Kervin Huelsman Newcomb or Towa Thoma, there is a further amount of circuit connections of universal ARC filters, which enable to realize the transfer function of biquad. The article mainly deals with some other circuits, which are not so familiar, but can be also successfully used as universal filters. These filters realizing required circuit functions with the possibility of tuning of basic parameters of the c" . "RIV/00216305:26220/11:PU93360" . "Frohlich, Lubom\u00EDr" . "1"^^ . . "236849" . "UNIVERSAL ARC FILTERS FOR ARC OSCILATORS WITH AUTOMATIC SEQUENTIAL FILTRATION" . "1559-9450" . . . . "ARC oscilator, universal filter"@en . . "5"^^ . "Friedl, Martin" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "2011" . . . "UNIVERSAL ARC FILTERS FOR ARC OSCILATORS WITH AUTOMATIC SEQUENTIAL FILTRATION"@en . . "2011" . . . . . "S" . "Progress In Electromagnetics" .