New Resistorless Current-mode Quadratur Oscillators Using 2 CCCDTAs and Grounded Capacitors

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Date
2011-12
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Abstract
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.
Keywords
Sinusoidal oscillator, CCCDTA, current-mode
Persistent identifier
http://hdl.handle.net/11012/56927
Document type
Peer reviewed
Document version
Final PDF
Source
Radioengineering. 2011, vol. 20, č. 4, s. 890-897. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_04_890_897.pdf
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Creative Commons Attribution 3.0 Unported License
Except where otherwise noted, this item's license is described as Creative Commons Attribution 3.0 Unported License