A Resistor-less Current-mode Quadrature Sinusoidal Oscillator Employing Single CCCDTA and Grounded Capacitors

• Autorzy: Keawon R. , Jaikla W.

Warianty tytułu

PL

Kwadraturowy generator sygnału sinusoidalnego wykorzystujący wzmacniacz transkonduktancyjny i uziemione kondensatory

• Języki publikacji: EN

Abstrakty

EN

In this study, a current-mode quadrature sinusoidal oscillator using single current controlled current differencing transconductance amplifier (CCCDTA) and 2 grounded capacitors is proposed. The proposed oscillator can provide 2 sinusoidal output currents with 90 phase difference. The oscillation condition and oscillation frequency can be controlled electronically by adjusting the bias current of the CCCDTA. The oscillator configuration exhibits high output impedance which makes easy to drive loads without using any buffering devices. The use of only grounded capacitors is ideal for integration. The circuit performances are depicted through PSpice simulations, they show good agreement to theoretical assumptions.

PL

W artykule przestawiono sinusoidalny generator prądowy wykorzystujący wzmacniacz transkonduktancyjny. Generator może mieć dwa wyjścia prądowe z sygnałami przesuniętymi w fazie o 90. Warunki oscylacji mogą być sterowane p[rzez dobór prądu we wzmacniaczu. Generator ma dużą wyjściową impedancję. Właściwości układu zbadano wykorzystując symulację PSpice.

Słowa kluczowe

EN

quadrature oscillator; current-mode; CCCDTA

PL

generator kwadraturowy; wyjście prądowe; wzmacniacz trankonduktancyjny

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 8
• Strony: 138--141
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Keawon R.

autor

Jaikla W.

• Department of Electrical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University,

Bibliografia

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• [3] Biolek D., CDTA – Building block for current-mode analog signal processing, European conference on circuit theory and design, (2003), 397–400
• [4] Biolek D., Biolkova V., Universal biquads using CDTA elements for cascade filter design, the 13th InternationalMulticonference on Circuits, Systems, Communications &Computers, (2003), 8–12
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• [6] Biolek D., Biolkova V., Kolka Z., Single-CDTA. (currentdifferencing transconductance amplifier) current-mode biquadrevisited, WSEAS Transactions on Electronics, 5 (2008), 250-256
• [7] Jaikla W., Siripruchyanun M., A versatile quadrature oscillatorand universal biquad filter using dual-output current controlledcurrent differencing transconductance amplifier, InternationalSymposium on Communications and Information Technologies,(2006), 1072-1075
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• [9] Keskin A.Ü., Biolek D., Current mode quadrature oscillatorusing current differencing transconductance amplifiers (CDTA),IEE Proceedings-Circuits, Devices and Systems, 153 (2003),214–218
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