Pukkalanun, Tattaya
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Pukkalanun, Tattaya
Alternative Name
Pukkalanun, T.
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tattaya.pu@kmitl.ac.th
34 results
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Item type:Publication, FDNC realization and its application to FDNR and filter realizations(2016-01-01); A simple circuit for the realization of the frequency-dependent negative conductance (FDNC) using active transconductance (C) elements is discussed. Based on the realized FDNC as fundamental circuit element, the frequency-dependent negatIve resistances (FDNR) can also be obtained. The equivalent value of the realized D element can be adjusted electronically by means of the transconductance parameters. Both simulator circuits do not require the component-matching condition , and enjoy employing only C, c ells together with two grounded capacitors; accordingly, they are canonical structures and convenient for integration. Simulation results with TSMC 0.35-urn CMOS technology are presented to validate the characteristics of the realized simulator circuits and application. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple BiCMOS voltage differencing inverting buffered amplifier (VDIBA) realization and application(2014-01-01); This work describes an integrable circuit technique to implement the recently defined active circuit block, namely a voltage differencing inverting buffered amplifier (VDIBA), suitable for integration in BiCMOS technology. The proposed VDIBA is composed of the differential-input transconductance amplifier as an input stage, and the unity-gain inverting voltage amplifier as an output stage. The circuit has been designed using bipolar and MOS transistors, in order to achieve the advantages of the both technologies. The performances of the realized VDIBA element are analyzed and discussed in detail. Simulation results with 0.35μm BiCMOS real process parameters verify the expected performance of the proposed circuit. As an application example, the proposed VDBA is employed to realize a canonical and resistorless first-order allpass filter. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Voltage-mode universal filter with one input and five outputs using DDCCTAs and all-grounded passive components(2012-08-01); This paper presents a versatile voltage-mode universal active filter with one input and five output terminals. The proposed circuit is based on using the recently reported active building block, namely differential difference current conveyor transconductance amplifier (DDCCTA). It employs two DDCCTAs as active elements together with two resistors and two capacitors as passive elements, which are all grounded. The circuit simultaneously realizes all the five standard biquadratic filter functions; i.e.; lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS) and allpass (AP), without changing circuit topology. The proposed circuit also has the advantage of high-input impedance terminal, and exhibits electronic tunability of its important parameters through the bias current of the DDCCTA as well as low sensitivity performance. PSPICE simulations using 0.5 μm MIETEC CMOS process are used to validate the theoretical predictions. © 2011 Elsevier Ltd. All rights reserved. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Structural generation of two integrator loop filters using CDTAs and grounded capacitors(2011-01-01); A versatile family of two integrator loop filter structures using current differencing transconductance amplifiers (CDTAs) and grounded capacitors is generated. The basic filter building blocks consist of current proportional blocks, current lossless integrators and a current lossy integrator based on the use of CDTAs as the major active components. It is demonstrated that the derived filter structures can realize a general class of second-order current transfer functions. Since the resulting structures contain only CDTAs and grounded capacitors, they are general and very appropriate for integration, cascading and electronic tuning. The influences of the CDTA non-idealities are also discussed. The functionality of the resulting filters has been verified by simulation results. © 2009 John Wiley & Sons, Ltd. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple current-mode analog multiplier, divider, square-rooter and squarer based on CDTAs(2011-03-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Resistorless voltage-mode first-order allpass section using single current-controlled conveyor transconductance amplifier(2015-05-01); This paper presents an alternative configuration for realizing a canonical voltage-mode first-order allpass (AP) section with electronic tuning. The proposed circuit is composed of only one CCCTA and one floating capacitor, which results in a simple and resistorless structure. Its phase response can be adjusted electronically through the external dc bias currents of the CCCTA. Simulation results based on 0.35 μm BiCMOS process parameters with ± 0.75 V supply voltages are provided to demonstrate the performance of the proposed AP section. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple current-mode square-rooting circuit with temperature compensation using only OTAs(2010-01-01); ; Surakampontorn, WanlopA simple current-controlled current-mode square-rooting circuit with temperature compensation employing operational transconductance amplifi ers (OTAs) as active elements is proposed. It has been designed by using only four OTAs, without the employment of additional passive elements. The current gain of the proposed circuit can be electronically controlled, thanks to the tuning property of the OTA. Simulation and experimental results are obtained to verify the theoretical analysis of the proposed circuit technique. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Resistorless realization of current-mode first-order allpass filter using current differencing transconductance amplifiers(2010-02-01); ; Surakampontorn, WanlopThis paper presents a realization of a current-mode first-order allpass filter using two current differencing transconductance amplifiers (CDTAs) as the active components and one virtually grounded capacitor as the only passive component. The proposed filer requires no external resistor and is electronically adjustable by varying the external bias current of the CDTA. No component-matching constraints are required. The circuit realizes both inverting and non-inverting types of allpass filters, and also exhibits high-output impedances, which are easy cascading in the current-mode operation. As an application of the proposed CDTA-based allpass section, a current-mode quadrature oscillator is realized. PSPICE simulation results are given to confirm the theoretical analysis. © 2010 Elsevier Ltd. All rights reserved. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Grounded lossy parallel inductance simulation using voltage differencing buffered amplifier(2017-11-03); ; An actively lossy parallel RL-type inductance simulation employing voltage differencing buffered amplifier (VDBA) as an active component is presented. The proposed grounded inductance simulator is realized with a single VDBA, one grounded capacitor and one floating resistor. The equivalent inductance value of the simulator can be adjusted electronically through the transconductance parameter of the VDBA. The effect of the VDBA non-idealities on the realized simulator is analyzed in detail. As an application, active second-order current-mode highpass/bandpass filter is designed using the proposed variable lossy inductance simulator. The PSPICE simulation results using TSMC 0.25-μm CMOS technology demonstrate a close agreement with the theory, and also verify the usefulness of the proposed simulator and its filter design application. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, All-grounded passive element voltage-mode universal filter using single DDCCTA(2012-01-01); In this paper, a novel single-input three-output (SITO) second-order multifunction active voltage filter with high-input impedance is proposed. The proposed circuit employs one differential difference current conveyor transconductance amplifier (DDCCTA) as active element together with one grounded resistor and two grounded capacitors as passive elements. The circuit offers the following attractive features : (i) the simultaneous realization of lowpass, bandpass and highpass responses from the same topology, (ii) no requirements for component matching conditions, (iii) electronic controllability of important filter parameters, (iv) simpler structure due to contains only one DDCCTA and three passive elements, and (v) low sensitivity performance. To confirm the theoretical analysis, PSPICE simulation results are included using 0.5 \xm MIETEC CMOS technology parameters.