Roongmuanpha, Natchanai
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Roongmuanpha, Natchanai
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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, Three-Input One-Output Voltage-Mode Biquadratic Filter Using Single VDBA(2020-03-01); ; In this article, a voltage-mode universal biquadratic filter with triple inputs and single output (TISO) is presented. The circuit consists of only one voltage differencing buffered amplifier (VDBA) along with two capacitors and one resistor. The proposed circuit can realize all five standard biquadratic filter functions namely, lowpass (LP), highpass (HP), bandpass (BP), bandstop (BS) and allpass (AP) without disturbing the circuit structure. The quality factor (Q) and the natural angular frequency (ωo) of the proposed circuit can be controlled by means of the transconductance gain of the VDBA. The circuit also provides low sensitivity performance. The potentiality of the proposed TISO biquadratic filter has been proved by PSPICE program based on TSMC 0.25-μm 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, Practical realization of electronically adjustable universal filter using commercially available IC-based VDBA(2021-01-01); ; This paper describes the practical realization of electronically adjustable voltage-mode universal filter with three inputs and single output (TISO) using the commercially available integrated circuit (IC)-based voltage differencing buffered amplifiers (VDBAs). The realization is resistor-less and contains only two VDBAs and two capacitors. The described filter structure can realize all the five standard biquadratic filter functions from the same configuration without needing any component matching criterions. It also exhibits low-output impedance, which enables for easy cascading in voltage-mode operation. Owing to practical VDBA realization, the filter circuit can be easily made electronically tunable with orthogonal ω<inf>o</inf>-Q tuning. The effects of the VDBA non-idealities on the filter performance have been analyzed in detail. To prove the theoretical finding, the performance of the studied circuit was also experimentally measured using the operational transconductance amplifier CA3080 and the operational amplifier LF356 ICs. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, On The Realization of Simulated Lossy Inductors Using Voltage Differencing Buffered AmplifiersThis paper reports four topologies, all simulating floating/grounded lossy inductors, using voltage differencing buffered amplifiers (VDBAs) as active elements. The simulated equivalent resistance and inductance values of the simulators can be adjusted electronically through the VDBA transconductance parameter. Non-ideal gain outcomes of the VDBA on the realized inductor circuits are finalized. The critical active and passive sensitivities are obtained to be low. - 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.