New Resistorless Current-mode Quadratur Oscillators Using 2 CCCDTAs and Grounded Capacitors
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Sakul, Chaiwat
Jaikla, Winai
Dejhan, Kobchai
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Společnost pro radioelektronické inženýrství
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The current-mode quadrature oscillators using 2 current controlled current differencing transconductance amplifiers (CCCDTAs) and 2 grounded capacitors are presented. The proposed oscillators can provide 2 sinusoidal output currents with 90º phase difference. The oscillation condition and oscillation frequency can be electronically/independently controlled by adjusting the bias current of the CCCDTA. High output impedances of the configuration enable the circuit to be cascaded without additional current buffers. The use of only grounded capacitors is ideal for integration. The PSpice simulation results are depicted. The given results agree well with the theoretical anticipation.
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Radioengineering. 2011, vol. 20, č. 4, s. 890-897. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_04_890_897.pdf
http://www.radioeng.cz/fulltexts/2011/11_04_890_897.pdf
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en
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Except where otherwised noted, this item's license is described as Creative Commons Attribution 3.0 Unported License