Tangsrirat, Worapong
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Preferred name
Tangsrirat, Worapong
Alternative Name
Tangsrirat, W.
Main Affiliation
Email
worapong.ta@kmitl.ac.th
17 results
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Item type:Publication, Grounded Parallel RL, RC, and LC Immittance Simulators Using VDBAs and Passive Elements(2022-01-01); ; This communication suggests a grounded parallel RL, RC, and LC immittance simulator. In this circuit, two voltage differencing buffered amplifiers (VDBAs) with two passive components are proposed. The VDBA device's transconductance gain can be used to electronically adjust the realized equivalent resistance (Req), inductance (Leq), and capacitance (Ceq), which is conditional on the choice of the passive element. The effect of the VDBA's non-idealities on the realized simulator is studied in this research. The second order voltage mode bandpass filter is realized using the proposed active LC parallel simulator, which is simulated using the PSPICE simulation program to ensure that it operates as desired. - 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, 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, Voltage differencing buffered amplifier-based electronically tunable grounded capacitance multiplier(2019-03-16); ; A minimal realization of electronically adjustable capacitance multiplication topology with voltage differencing buffered amplifier (VDBA) is proposed. The proposed capacitance multiplier circuit is designed by means of two VDBAs and one floating capacitor. A capacitance multiplication factor is adjusted electronically through the ratio of two transconductances. The effect of the non-ideal gains of the VDBA is also taken into account and carried out. As an analog application example, the proposed capacitance multiplier circuit is utilized in the design of an electronically tunable first-order low-pass filter. PSPICE simulations with TSMC 0.25-µm CMOS technology are included to support the theoretical analysis. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Tunable active grounded lossless and lossy inductance simulators with single grounded capacitor using VDBAs(2022-04-01); Surakampontorn, W.This study presents three active-C synthetic grounded inductance simulator circuits that realize tunable lossless and lossy series and parallel R-L type inductances. Each of these circuits employs two Voltage Differencing Buffered Amplifiers (VDBAs) as active components and a single grounded capacitor as a passive component. In all the proposed circuits, the simulated equivalent resistance and inductance values can be adjusted electronically through the transconductance gains of the VDBAs. They also do not require any critical component matching conditions and cancellation constraints. Details of non-ideal analysis including transfer errors of the VDBA has been analyzed. For circuit performance verification and comparison, some application examples are given together with computer simulation results by PSPICE program. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, SFG realization of general nth-order allpass voltage transfer functions using VDBAs(2015-08-17); A synthesis procedure of general n<sup>th</sup>-order allpass voltage transfer functions using solely voltage differencing buffered amplifiers (VDBAs) and capacitors with the signal-flow-graph design method is described. It has been shown that the proposed structure employs n VDBAs and n capacitors for the realization of any n<sup>th</sup>-order voltage transfer function. As an illustrative example, the third-order voltage-mode allpass filter has been designed and simulated using PSPICE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electronically tunable resistorless capacitance multiplier employing VDBAs(2017-11-24); This work focuses on a circuit configuration for the simulation of the resistorless tunable grounded capacitance multiplier using the recently introduced active building block called voltage differencing buffered amplifier (VDBA). The proposed capacitance multiplier circuit consists of only two VDBAs, and one floating capacitor, without requiring critical matching conditions. The realized equivalent capacitance value can be tuned electronically through the ratio of the transconductance gain of the VDBA. The effect of the VDBA non-idealities on the realized equivalent capacitance has also been investigated in detail. As an application, an illustrative RLC low-pass filter using the proposed tunable capacitance simulator has been provided. In order to demonstrate the behavior of the circuit and confirm the theory, PSPICE simulation results with TSMC 0.25-µm CMOS technology are included. - 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, SFG synthesis of general nth-order allpole voltage transfer functions using VDBAs and grounded capacitors(2014-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, VDBA-based electronically tunable capacitance multiplier with a grounded capacitor(2018-07-02); ; This work presents an electronically tunable grounded capacitance multiplier circuit based on the voltage differencing buffered amplifier (VDBA), a recently introduced active building block. The proposed capacitor circuit requires only two VDBAs, one floating resistor, and one grounded capacitor. The circuit can be tuned electronically via the VDBA transconductance ratio. The effect of the VDBA non-idealities on the simulated capacitance value has also been discussed in detail. The usability of the proposed tunable capacitance simulator has been verified by realizing the fourth-order low-pass filter application with a Butterworth approximation. In order to verify the theory, the behavior of the circuits is evaluated with PSPICE simulation program using TSMC 0.25-µm CMOS process parameters.