Roongmuanpha, Natchanai
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Preferred name
Roongmuanpha, Natchanai
Main Affiliation
Email
natchanai.ro@kmitl.ac.th
8 results
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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, Low-output-impedance electronically adjustable universal filter using voltage differencing buffered amplifiers(2019-03-16); In this study, a voltage-mode universal filter with three inputs and single output is presented. The circuit is resistor-less, and consists of only two VDBAs and two capacitors. The proposed TISO filter realizes all the five standard biquadratic filter functions at the low-impedance-output terminal without any component matching criterion. The effect of the VDBA non-idealities on the presented filter performance is also discussed in detail. To prove the theoretical finding, simulation results are provided using PSPICE software. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, CMOS Voltage differencing transconductance amplifier with linearly adjustable transconductance gains(2019-07-01); ; In this work, a circuit configuration for the realization the CMOS voltage differencing transconductance amplifier (VDTA) with linear tunable transconductance and wide-input dynamic range is introduced. The circuit design technique is achieved by squaring the long-tail bias current of the differential-input voltage-to-current converter circuit. In addition, the linearity region of the input signal is also improved by using source degeneration technique. The workability of the proposed linearly tunable VDTA has been shown on the construction of the electronically controllable first-order allpass filter circuit. The proposed circuit and its application are investigated and simulated with PSPICE software using TSMC 0.25μm CMOS technology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Linearly tunable CMOS VDBA design(2018-06-08); ; A CMOS voltage differencing buffered amplifier (VDBA), whose transconductance gain can be varied linearly by the external DC bias current, is described in this paper. A current squaring circuit is used for biasing the transconductance amplifier with improved wide-input dynamic range, yielding electronically and linearly tunable transconductance. The application of the proposed VDBA in realizing a phase shifter circuit is also suggested. Simulations on the circuits are performed using PSPICE program to confirm the theory and demonstrate the circuit performances. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Resistorless realization of grounded lossy series inductor with two VDBAs and a grounded capacitor(2017-11-24); ; An active simulation of a grounded lossy series RL-type inductor with voltage differencing buffered amplifier (VDBA) is proposed. The proposed inductor is simulated using only two VDBAs, and one grounded capacitor, without any external passive resistors. Also, the simulator requires no critical element matching conditions and cancellation constraints. The realized equivalent resistance and inductance values can be adjusted electronically by means of the VDBA transconductances. The effect of the non-ideal gains of the VDBA on the simulated element values is also discussed in detail. As an application, an active current-mode RLC bandpass filter is designed and simulated using the proposed inductance simulator. The feasibility of the proposed simulator and its filter application has been demonstrated by PSPICE simulations based on TSMC 0.25-?m CMOS technology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Triple-input single-output electronically controlled voltage-mode biquadratic filter(2019-07-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Active simulation of electronically tunable grounded lossless inductor using voltage differencing inverting buffered amplifiers(2018-08-13); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Variable Lossy Series Inductance Simulator Using Single Voltage Differencing Buffered Amplifier (VDBA)(2017-01-01); ; Actively simulated lossy series RL-type inductor with voltage differencing buffered amplifier (VDBA) is described. The proposed inductance simulator is simulated using one VDBA, one grounded capacitor and one floating resistor. The realized equivalent value of the simulator is electronically controllable by the transconductance parameter of the VDBA. The effect of the VDBA non-idealities on the realized equivalent resistance and inductance values is also investigated in detail. As an application, active second-order current-mode lowpass filter is designed using the proposed variable lossy inductance simulator. The results obtained from PSPICE simulation demonstrate a close agreement with the theory, and also confirm the workability of the proposed simulator and its filter application.