Lerkvaranyu, Somkiat

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Lerkvaranyu, Somkiat
Alternative Name
Lerkvaranyu, S.
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Email
somkiat.le@kmitl.ac.th

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    A Wien-type oscillator using ECCII
    (2017-01-18)
    Suksaibul, Pichai
    ;
    Lerkvaranyu, Somkiat
    ;
    Kumngern, Montree
    This paper presents a new Wien-type oscillator using electronically tunable current conveyors (ECCII). Unlike previous Wien-type oscillators, the condition of oscillation of the proposed circuit can be controlled electronically using the current gain of ECCII. The structure is realized using grounded resistor which is easy for developing as a voltage-controlled oscillator. The condition and frequency of oscillations can be controlled orthogonally. PSPICE simulation results are given to confirm the presented theory.
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    A square-wave generator using ECCII
    (2017-07-02)
    Kumngern, Montree
    ;
    Suksaibul, Pichai
    ;
    Lerkvaranyu, Somkiat
    This paper presents a new square-wave generator using electronically tunable second-generation current conveyors (ECCII). The proposed circuit employs one ECCII, two resistors and one resistor. Unlike previous works, oscillating condition can be given by current gain of ECCII and the output frequency can be controlled by changing resistor. Both voltage and current signals can be obtained into a single topology. The proposed circuit is simulated using PSPICE simulators to confirm the workability of the circuit.
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    Multiple-Input Multiple-Output Universal Filter Using DDTAs
    (2022-01-01)
    Suksaibul, Pichai
    ;
    Torteanchai, Usa
    ;
    Manman, Somsak
    ;
    Jongchanachavawat, Wirote
    ;
    Kumngern, Montree
    This paper presents a multiple-input multiple-output universal biquadratic filter using differential difference transconductance amplifiers. The variant filtering responses can be obtained by appropriately applying input signals and appropriately choosing output terminals. The voltage-mode filter possesses both high-input and low-output impedances. The proposed filter provides five standard filtering responses. The natural frequency can be controlled electronically, and the quality factor can be controlled orthogonally. The performance of the proposed filter is confirmed using PSPICE simulation based on 0.18 µm CMOS technology from TSMC.
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    Mixed-Mode Universal Filter Using Differential Difference Transconductance Amplifiers
    (2022-01-01)
    Suksaibul, Pichai
    ;
    Torteanchai, Usa
    ;
    Kumngern, Montree
    ;
    Jongchanachavawat, Wirote
    ;
    Burapattanasiri, Bancha
    This paper presents a new mixed-mode universal biquad filter based on differential difference transconductance amplifiers (DDTAs). This work will be expressed that many filtering functions with electronic control of the natural frequency can be obtained using DDTA-based circuit. The topology provides voltage-mode (VM), current-mode (CM), transimpedance-mode (TIM), transadmittance-mode (TAM) transfer functions into single topology and each transfer function offers five standard filtering functions. The performance of the proposed topology is carried out using PSPICE simulators based on 0.18 μm CMOS technology from TSMC. The simulation result shows that it can confirm the proposed topology.