Jaikla, Winai
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Jaikla, Winai
Alternative Name
Jaikla, W.
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winai.ja@kmitl.ac.th
14 results
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Item type:Publication, Single Active Element Based Electronically Controllable Capacitance Multiplier(2022-07-15); ; ; The realization of capacitance multiplier using the versatile active building block, namely voltage differencing differential difference amplifier (VDDDA) is presented in this paper. The realized capacitance multiplier is very simple consisting of one VDDDA, one MOS resistor (RM) and one grounded capacitor which is attractive for integration. The multiplication factor (KC) of the realized circuit can be electronically controlled via the bias current (IB) and control voltage (VC) without the need of any matching condition of active and passive element. Moreover, the multiplication factor can be adjusted to be more or less than one. The performances of the presented capacitance multiplier are verified through Pspice simulation using CMOS VDDDA in 0.18μm TSMC technology with ±0.9V power supplies. The multiplication factor is designed to be KC=2 by choosing VC=0.85V, IB=50μA and C=30 pF. The simulated multiplication factor is around 1.98. The simulated operational frequency range is around three decades (6.16 kHz-8.91MHz). The performances of the proposed circuit are also verified by the experiment using VDDDA implemented from the commercial ICs, AD830 and LM13700 with ±5V power supplies. The experiment is conducted under the same multiplication factor (KC=2) as the simulation by choosing RM=0.27 kω (1% passive resistor), IB=96.2μA and C=1nF. The experimental multiplication factor is around 2.06. The experimental operational frequency range is around three decades (1kHz-1.25MHz). By adjusting the bias current from 17.67μA to 400 μA, the experimental multiplication factor is controllable from 11.47 to 0.48. The percent deviation of the theoretical and experimental multiplication factor is lower than 5% when the value of bias current is greater than 39μA. These deviations stem from the effect of the parasitic capacitance and resistance in VDDDA. Moreover, the application example of the presented capacitance multiplier as the sinusoidal oscillator is presented. The performances of the presented oscillator verified via the experiment are well consistent with theoretical anticipation. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A new quadrature sinusoidal oscillator for telecommunication system using VDDDAs(2016-03-22); ; ; A CMOS voltage differencing differential difference amplifiers (VDDDAs) based voltage-mode quadrature sinusoidal oscillator is proposed. The proposed oscillator is based on the two integrator loop configuration with amplifier wherein the frequency of oscillation (FO) is tuned by the time constant of two integrator and the condition of oscillation (CO) is tuned by gain of amplifier. It is constructed from two VDDDAs, two resistors, and two grounded capacitors. With this structure, it is attractive to develop in monolithic chip. The tuning of frequency of oscillation can be electronically done without affecting the condition of oscillation. Also, the condition of oscillation can be adjusted by external resistor without affecting to frequency of oscillation. The simulation results have been demonstrated and discussed using parameters of 0.18um TSMC CMOS technology and +0.9V power supply voltages. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Five-inputs single-output voltage mode universal filter with high input and low output impedance using VDDDAs(2017-01-01); ; Khateb, FabianThe design of analog filter using active building block has been gained significant attention and has become an interesting research topic. A five-inputs single −output voltage-mode universal biquadratic filter using active building block, namely voltage differencing differential difference amplifier (VDDDA) is presented in this paper. The proposed filter consists of two VDDDAs and two grounded capacitors. The presented circuit has high impedance for all input voltage nodes and low impedance for output voltage node which is ideal for cascade in voltage-mode circuit without the use of buffer circuits. It can provide five output voltage functions which are band-pass (BP), low-pass (LP), band-reject (BR), high-pass (HP) and all-pass (AP) responses. For high-pass and band-pass functions, the inverting and non-inverting response can be achieved. The matching condition, the inverting and double gain amplifier are not required which is easy to select the output response by digital method. The natural frequency and quality factor can be electronically tuned that is attractive for microcomputer or microcontroller controllability. To verify the validity of proposed filter, the PSPICE simulation and experimental results using VDDDA constructed from commercially available IC are included. The measured results agree well with theoretical expect. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Single VDDDA-Based Lossy Inductance Simulator for Application to Sinusoidal Oscillator(2023-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Inductance simulator with electronic controllability using single VDDDA(2019-07-01); ; ; Silapan, PhamomThis research paper presents an active inductance simulator utilizing single voltage differencing differential difference amplifier (VDDDA), single grounded capacitor and single resistor. The control of inductance value is electronically done via adjusting bias current of VDDDA which is attractive for controlling by the microcontroller or microprocessor. To investigate the functionality of the presented active inductance simulator, the voltage-mode biquadratic band reject is designed. The theoretical behaviors of the proposed active inductor and its application are verified via Pspice simulation program and experiment using VDDDA constructed from the commercially available ICs. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of Second Order Lowpass and Bandpass Filter Using Single VDDDA and Its Modification as Sinusoidal Oscillator(2019-12-01); This paper introduces an electronically controllable voltage mode analog biquad filter which is designed based on the series resistor-inductor-capacitor (RLC) topology. The proposed second order filter employs one active device, voltage differencing differential difference amplifier (VDDDA) and three passive elements (one resistor and two grounded capacitors). The natural frequency (\omega-{0}) is controlled electronically as well as quality factor (Q) by changing the bias current. Two filter responses, lowpass (LP) and bandpass (BP) functions with unity voltage gain are simultaneously achieved. The proposed voltage-mode biquad filter consists of two input voltage nodes with high impedance. These input voltages are employed to select the inverting or non-inverting filter response. The sinusoidal oscillator is realized by slight modification of the proposed voltage-mode biquad filter. The sinusoidal voltage output node is low impedance. With this configuration, the proposed sinusoidal oscillator can be connected to other circuits without requirement of the additional buffer devices. The proposed filter and sinusoidal oscillator employ a few in number of the passive and active devices (also with grounded capacitors). The proposed circuits are interesting for monolithic integrated circuit (IC) realization. Pspice simulation program and TSMC 0. 18m CMOS process parameters with ± 0.9V are employed to verify the functionality of the presented biquad filter and sinusoidal generator. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Voltage-Mode First-order Multifunction Filter with Electronic Controllability Using VDDDA(2025-01-01); ; This study presents the design of a three-input single-output voltage-mode first-order multifunction filter. The proposed filter comprises a single VDDDA as the active component, one grounded capacitor, and two resistors. The output voltage node has low impedance. The proposed filter provides three responses consisting of a low-pass (LP), a highpass (HP), and an all-pass (AP) by setting the voltage signal at the input voltage. The natural frequency (f<inf>0</inf>) and phase response are electronically controlled by the bias current (I<inf>B</inf>). This flexibility allows for precise tuning of the filter characteristics to meet specific application requirements. The passband gain of LP and HP filters can be adjusted using resistors R<inf>1</inf> and R<inf>2</inf> without affecting the f<inf>0</inf> or requiring an additional amplifier. The simulation and experimental results validate the functionality of the proposed filter as anticipated theoretically. This reliability is crucial for communications and signal processing applications, where accurate signal representation is paramount. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, High input impedance voltage-mode universal filter and its modification as quadrature oscillator using VDDDAs(2017-05-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Single-input multiple-output voltage-mode shadow filter based on VDDDAs(2019-05-01); ; ; This paper presents a voltage-mode shadow filter with single-input multiple-output (SIMO) configuration using voltage differencing differential difference amplifiers (VDDDAs). In this design, the low-pass and high-pass output functions of the single-input three-output second order filter are feedback via the voltage amplifier. The proposed filter consists of three VDDDAs, one grounded resistor and two grounded passive elements. The proposed filter uses grounded elements which is attractive for integrated circuit (IC) fabrication. It can simultaneously provide low-pass (LP), high-pass (HP), band-pass (BP), band-reject (BR) and all-pass (AP) responses without matching condition. The proposed circuit has high input impedance. The natural frequency (ω <inf>0</inf> ) and quality factor (Q) can be independently and electronically tuned by changing the external DC bias currents. The effect of the non-ideal and parasitic elements of the VDDDA is studied and investigated. The PSpice simulation and experimental results using CMOS technology and commercially available active devices are given to confirm the workability of the proposed filter. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Single VDDDA-based voltag-mode multifunction second order filter for analog signal processing(2016-03-22); This paper describes the design of multifunction second order voltage-mode filter using the voltage differencing differential difference amplifier (VDDDA) as active element. The internal construction of VDDDA based on the 0.25um TSMC CMOS technology is used for simulation and testing. The proposed filter is sort of three inputs-single output (TISO) multifunction filter. It consists of single VDDDA, single resistor and two capacitors that is suitable to fabricate into monolithic chip. The filter can provide five standard functions namely, lowpass (LP), bandpass (BP), highpass (HP), band-stop (BS) and allpass (AP) responses, in the same circuit topology. Each filter response can be selected by digital method. The natural frequency and quality factor can be electronically tuned that is attractive for micro-computer or microcontroller controllability. The proposed filter was supplied by ±1.25 V source. The simulated results using PSpice simulation agree well with expected theoretical analysis.