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Author: search.filters.author.Chanwutitum, JirasakSubject: search.filters.subject.quadrature oscillator

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    Single MCCCCTA-based mixed-mode third-order quadrature oscillator
    (2012-11-22)
    Kumngern, Montree
    ;
    Chanwutitum, Jirasak
    This paper presents a new current-controlled mixed-mode third-order quadrature oscillator. The proposed structure employs one modified current-controlled current conveyor transconductance amplifier (MCCCCTA) and three grounded capacitors that can generate two quadrature voltage outputs and four quadrature current outputs. The use of grounded capacitor makes the proposed structure more suitable for integrated circuit implementation. The condition of oscillation and the frequency of oscillation can be controlled orthogonally and electronically by adjusting the biasing currents of the MCCCCTA. Simulation results verifying the theoretical analysis are also included. © 2012 IEEE.
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    Fully integrated current-mode quadrature sinusoidal oscillator circuit
    (2011-10-18)
    Kumngern, Montree
    ;
    Chanwutitum, Jirasak
    ;
    Dejhan, Kobchai
    This paper presents a new mixed-mode quadrature oscillator using one current controlled current conveyor (CCCII), one CCCII with controlled current gain and two grounded capacitors. The oscillation condition and the oscillation frequency can be controlled orthogonally and electronically by the bias currents of the CCCIIs. The circuit provides two quadrature voltage outputs and four quadrature current outputs and then can be classified as a mixed-mode oscillator. Simulation results that confirm the theoretical predictions are also given. © 2011 IEEE.