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Author: search.filters.author.Kumngern, MontreeSubject: search.filters.subject.CCCII

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    A sinusoidal oscillator using translinear current conveyors
    (2010-12-01)
    Kumngern, Montree
    ;
    Junnapiya, Somyot
    This paper presents a new single-element-controlled current-controlled sinusoidal oscillator. The proposed oscillator is composed of one translinear current conveyor (CCCII), one CCCII with controlled current gain and two grounded capacitors. The oscillator is beneficial to monolithic integrated circuit implementation by the use of grounded capacitors. The oscillation condition and the oscillation frequency can be controlled electronically and independently through the bias current of the CCCII. PSPICE simulation results are given to confirm the operation of the proposed oscillator. © 2010 IEEE.
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    Electronically tunable multiphase sinusoidal oscillator using translinear current conveyors
    (2010-11-01)
    Kumngern, Montree
    ;
    Chanwutitum, Jirasak
    ;
    Dejhan, Kobchai
    A new electronically tunable current-mode multiphase sinusoidal oscillator based on translinear current conveyors is presented. The proposed oscillator circuit, which employs only one translinear current conveyor and one grounded capacitor for each phase, can generate arbitrary N output current equal-amplitude signals that are equally spaced in phase (N being even or odd), all at high output impedance terminals. The frequency of oscillation and the condition of oscillation can be controlled electronically and independently through the bias current of the translinear current conveyor. The proposed structure also has simple circuitry, low-component count, and is highly suitable for integrated circuit implementation. The theoretical results were verified by PSPICE simulation. In addition, the modification of the N sinusoidal oscillators to construct a programmable multiphase oscillator is also discussed. © 2010 Springer Science+Business Media, LLC.
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    Electronically tunable current-mode all-pass filter-based high-Q bandpass filter using minimum elements
    (2009-12-01)
    Kumngern, Montree
    A new electronically tunable current-mode high-Q bandpass filter employing second-generation current controlled conveyor (CCCII)-based first-order all-pass filters is presented. The proposed filter uses only three CCCIIs, one current-controlled resistor and two grounded capacitors. The center frequency (ω<inf>c</inf>) and the quality factor (Q) can be independently adjusted through the bias current of the CCCII and current-controlled resistor. The Q-value is also temperature independent. The proposed configuration is very attractive for monolithic form. The performances of the proposed circuit are simulated with PSPICE to confirm the presented theory. ©2009 IEEE.