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Square Wave Generator with Voltage-Controlled Frequency Based on Universal Current Conveyor

Wybrane pełne teksty z tego czasopisma
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Warianty tytułu
PL
Generator fali prostokątnej o napięciowym sterowaniu częstotliwością oparty na uniwersalnych
Języki publikacji
EN
Abstrakty
EN
A novel square wave generator (relaxation oscillator) with controllable frequency is described. It employs two universal current conveyors (UCC) and grounded passive elements. The generator includes integrator with two integration capacitors that alternate in charging which results in linear and precise control of frequency by voltage. New implementation of UCC with attractive properties in CMOS 0.18 μm technology is also presented. Computer simulations in PSpice environment confirm the theoretical assumptions.
PL
W artykule przedstawiono nowy generator fali prostokątnej o regulowanej częstotliwości, zbudowany na bazie dwóch przekaźników prądowych (UCC) oraz elementów pasywnych. Opisano także zastosowanie technologii CMOS 0,18um do przekaźników. Dokonano weryfikacji symulacyjnej w programie PSpice.
Rocznik
Strony
191--194
Opis fizyczny
Bibliogr. 14 poz., schem., tab., wykr.
Twórcy
autor
  • Brno University of Technology, Faculty of Electrical Engineering and Communication, Technicka 10, 616 00 Brno, Czech Republic
autor
  • Brno University of Technology, Faculty of Electrical Engineering and Communication, Technicka 10, 616 00 Brno, Czech Republic
autor
  • Brno University of Technology, Faculty of Electrical Engineering and Communication, Technicka 10, 616 00 Brno, Czech Republic
Bibliografia
  • [1] Filanovsky I.M., Nonsaturated multivibrators for sensor signal conditioning, in Proc. of the IEEE 32nd Midwest Symposium on Circuits and Systems, Vol. 36, pp. 1256–1257, 1989.
  • [2] Nihtianov S.N., Shterev G.P., Iliev B., Meijer G.C.M., An interface circuit for R-C impedance sensors with a relaxation oscillator, IEEE Trans. Instrum. Meas. 50(6), pp. 1563–1567, 2001.
  • [3] Abuelma’atti M.T., Al-Absi M.A., A current conveyor-based relaxation oscillator as a versatile electronic interface for capacitive and resistive sensors, Int. J. Electron. 92(8), pp. 473–477, 2005.
  • [4] Abuelma’atti M.T., Al-Absi M.A., A low-cost dual/slope triangular/square wave generator, Int. J. Electron. 91(3), pp. 185–190, 2004.
  • [5] Abuelma’atti M.T., Al-Shahrani S.M., New CFOA-based triangular/square wave generator, Int. J. Electron. 84(6), pp. 583–588, 1998.
  • [6] Almashary B., Alhokail H., Current-mode triangular wave generator using CCIIs, Microelectron. J. 31, pp. 239–243, 2000.
  • [7] Chung W.-S., Kim H., Cha H.-W., Kim H.-J., Triangular/squarewave generator with independently controllable frequency and amplitude, IEEE Trans. Instrum. Meas. 54(1), pp. 105–109, 2005.
  • [8] Cicekoglu O., Kuntman H., On the design of CCII+ based relaxation oscillator employing single passive element for linear period control, Microelectron. J. 29, pp. 983–989, 1998.
  • [9] Pal D., Srinivasulu A., Pal B.B., Demosthenous A., Das B.N., Current conveyor-based square/triangular wave generators with improved linearity, IEEE Trans. Instrum. Meas. 58(7), pp. 2174–2180, 2009.
  • [10] Srinivasulu A., A novel current conveyor-based Schmitt trigger and its application as a relaxation oscillator, Int. J. Circuit Theory Appl. 39(6), pp. 679–686, 2011.
  • [11] Minaei S., Yuce E., A Simple Schmitt Trigger Circuit with Grounded Passive Elements and Its Application to Square/Triangular Wave Generator, Circuits, Systems and Signal Processing, 22 November 2011, pp. 1–12, 2011.
  • [12] Kubanek D., Vrba K., Two-function Filters Employing UCCX Element, In Proc. of the 27th Int. Conference Telecommunications And Signal Processing 2004. Brno, Czech Republic, pp. 107–110, 2004.
  • [13] Sponar R., Vrba K., Kubanek D., Universal Current Conveyor and Universal Voltage Conveyor Measurements and Modelling, In International Conference on Systems. Los Alamitios, USA: IEEE Computer Society, pp. 175–179, 2006.
  • [14] Becvar D., Vrba K., Zeman V., Musil V., Novel universal active block: a universal current conveyor, Proceedings of the IEEE International Symposium on Circuit and Systems – II, n. 4, vol.47, pp. 306-313, 2000.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3bcbbc79-8b30-44be-854a-373d16a8e365
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