Zobrazeno 1 - 10
of 354
pro vyhledávání: '"T. Dostal"'
Publikováno v:
Radioengineering, Vol 21, Iss 1, Pp 392-402 (2012)
An idea of adjustable gain in order to obtain controllable features is very useful for design of tuneable oscillators. Several active elements with adjustable properties (current and voltage gain) are discussed in this paper. Three modified oscillato
Externí odkaz:
https://doaj.org/article/c42f2237a9a04a36972eb1e99786c942
Publikováno v:
Radioengineering, Vol 19, Iss 3, Pp 446-454 (2010)
The paper deals with sinusoidal oscillator employing two controlled second-generation negative-current conveyors and two capacitors. The proposed oscillator has a simple circuit configuration. Electronic (voltage) adjusting of the oscillation frequen
Externí odkaz:
https://doaj.org/article/3d05c6f2fdd348339b26c20428fcb484
Publikováno v:
Radioengineering, Vol 16, Iss 3, Pp 96-102 (2007)
The paper deals with continuous-time ARC biquadratic (second-order) filters based on the single classical three-port current conveyors, so called second generation CC II. A unique application of the CC II is discussed, when the terminals Y and Z are
Externí odkaz:
https://doaj.org/article/4ae3a69eb1904ab8bd52702155010070
Autor:
T. Dostal
Publikováno v:
Radioengineering, Vol 15, Iss 2, Pp 1-5 (2006)
The paper deals with simple canonical structures of the second order ARC filters employing only single transconductor (OTA) and passive components R and C. A systematic design procedure of this circuits based on the given autonomous networks is descr
Externí odkaz:
https://doaj.org/article/f16a5b6e32344720b0c03ad9fcc0d516
Autor:
T. Dostal
Publikováno v:
Radioengineering, Vol 14, Iss 3, Pp 48-53 (2005)
Analogue first, second and high-order all-pass active filters in thecurrent mode, with constant group delay and magnitude responses, arepresented in this paper. These filters are based on a modification ofthe multi-loop feedback canonical structures
Externí odkaz:
https://doaj.org/article/d66be516cffd489ebd106a6f8ff6cbb6
Autor:
T. Dostal
Publikováno v:
Radioengineering, Vol 12, Iss 3, Pp 6-11 (2003)
Universal multifunctional (low-pass, high-pass, band-pass,band-reject and all-pass) nth-order active RC filters in current modeare presented in this paper. The filters are based on severalmulti-loop feedback and state-variable structures. Their modif
Externí odkaz:
https://doaj.org/article/cdccfe5cd4bf44189c55679a5fa7db10
Publikováno v:
Radioengineering, Vol 12, Iss 1, Pp 30-34 (2003)
Starting from the piecewise-linear (PWL) autonomous dynamical systemoptimized from the eigenvalue sensitivities viewpoint the correspondingoptimized non-autonomous linear (single-input single-output) system isderived. Such a design procedure gives th
Externí odkaz:
https://doaj.org/article/424a8c08cb6347a0ad6dd9adcd3be2a3
Publikováno v:
Radioengineering, Vol 11, Iss 2, Pp 14-17 (2002)
Special cells using a differential voltage current conveyor arepresented. The use of these cells for high-order lowpass filter designis described. The filters can be designed to operate in differentmodes.
Externí odkaz:
https://doaj.org/article/bd355354503e497b915107ae8fbd3452
Autor:
T. Dostal, A. I. Rybin
Publikováno v:
Radioengineering, Vol 10, Iss 3, Pp 1-4 (2001)
A special method of the nodal analysis of the circuits containingseveral types of the multiport current conveyors is presented in thispaper. The method is based on the given regular and homogeneous modelsof the irregular current conveyors by the gyra
Externí odkaz:
https://doaj.org/article/b34ab85e8fb04e41bef50726cae867c5
Autor:
T. Dostal
Publikováno v:
Radioengineering, Vol 9, Iss 3, Pp 8-11 (2000)
Suitable models of the modern active components and functional blocks,namely new types of current conveyors, operational and transimpedanceamplifiers, in several appropriate levels, using analog behavioralmodeling are given in this paper.
Externí odkaz:
https://doaj.org/article/a4b87af8e3994962baf25de659bebc0a