Siripongdee, Surapong
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Preferred name
Siripongdee, Surapong
Alternative Name
siripongdee, Surapong
Main Affiliation
Email
surapong.si@kmitl.ac.th
19 results
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Item type:Publication, Electronically controllable grounded inductance simulators using single commercially available IC: LT1228(2017-06-01); The grounded inductance simulators using available commercially integrated circuit (IC) are proposed in this paper. The three types of active inductor called parallel R and L, series R and L and pure L are achieved. The proposed inductance simulators consist of single available commercially IC from Linear Technology Inc. called LT1228 with a resistor and a capacitor. The tune of inductance and resistance value can be done electronically. The proposed inductance simulators don't require any active and passive component matching condition. The performances of proposed circuit are verified through PSPICE simulation and experiment. To show the usability of the proposed simulators, they are used to realize the sinusoidal oscillator, second order bandpass filter and second order band-reject filter. The workability of these applications is experimented. The results agree well with theoretical expect. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, High input impedance voltage-mode biquad filter using VD-DIBAs(2014-01-01); ; Bajer, JosefThis paper deals with a single-input multipleoutput biquadratic filter providing three functions (lowpass, high-pass and band-pass) based on voltage differencing differential input buffered amplifier (VD-DIBA). The quality factor and pole frequency can be electronically tuned via the bias current. The proposed circuit uses two VD-DIBAs and two grounded capacitors without any external resistors, which is suitable to further develop into an integrated circuit. Moreover, the circuit possesses high input impedance, providing easy voltage-mode cascading. It is shown that the filter structure can be easily extended to multi-input filter without any additional components, providing also all-pass and band-reject properties. The PSPICE simulation results are included, verifying the key characteristics of the proposed filter. The given results agree well with the theoretical presumptions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Universal Filter Using Single Commercially Available IC: LT1228(2017-02-09); In electrical and electronic engineering, the filter is very importance circuit. A voltage-mode three inputs single output second-order multifunction filter is presented in this paper. The proposed filter is based on RLC parallel circuit. The main active element is the commercially available IC from Linear Technology Inc, LT1228. The filter consists of single LT1228, single resistor and two capacitors. Five output second-order filter responses, namely band-pass (BP), band-stop (BS), high-pass (HP), low-pass (LP) and all-pass (AP) functions are achieved. Each output response can be selected without component matching condition and the requirement of double gain amplifier. The quality factor and natural frequency can be electronically controlled. PSpice simulation results suing macro model of LT1228 are in close agreement with the theory. - 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, Electronically Adjustable Voltage-mode First-order Allpass Filter Using Single Commercially Available IC(2019-01-01); ; In this design, the use of single commercially available integrated circuit (IC), LT1228 from Linear Technology Corporation, to implement the first order allpass filter is presented. The passband voltage gain of the presented first allpass filter (APF) is unit and constant throughout the operation frequency, while the phase response is electronically tuned by changing the external DC bias current. With this property, the proposed first order filter can be used as phase shifter with microcontroller controllability. Tuning phase property is not required any matching condition. The proposed phase shifter consists of one LT1228, one capacitor and two resistors which is attractive for off the shelf implementation. Moreover, the impedance at output voltage node is exhibit low which can connect to other circuit without the requirement of external voltage buffer. The expected performances of the proposed circuit are proved by Pspice simulation using macro model parameters. Also, the quadrature sinusoidal oscillator which is designed from the connecting of the proposed filter and integrator is chosen as application example. - 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, Current controlled current-mode universal filter using CCCCTAs(2011-09-22); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electronically controlled high input and low output impedance voltage mode multifunction filter with grounded capacitors(2014-12-01); ; In this study, a three-input single-output voltage-mode biquadratic filter employing voltage differencing differential input buffered amplifier (VD-DIBA) is presented. The proposed filter uses two VD-DIBAs and two grounded capacitors without any external resistors, which is well suited for integrated circuit implementation. The circuit provides five standard transfer functions, namely, low pass, high pass, band pass, notch and all pass filters with electronic control of quality factor and pole frequency. Each transfer function can be selected by suitably selecting input signals via digital method. The filter does not require inverting of the input voltage signal. Moreover, the circuit possesses high input and low output impedances and thus it enables simple voltage-mode cascading. The PSPICE simulation and also experimental results are included, verifying the workability of the proposed filter. The given results agree well with the theoretical anticipation. - 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, Three-inputs single-output voltage-mode universal filter with orthogonal control using single commercially available IC(2017-07-02); ; In this study, a new electronically tunable voltage-mode second-order universal filter as a new application for commercially available IC named LT1228 from Linear Technology Inc is presented. The proposed filter with three-inputs and single output voltage uses single LT1228, two resistors and two capacitors, which is well suited for off-the-shelf implementation. The proposed filter can provide high pass (HP), low pass (LP), band pass (BP), band reject (BR) and all pass (AP) responses with electronic control of the quality factor (Q) and the natural frequency (ω0). The control of quality factor can be done without affecting natural frequency. The selection of filter response can be done without any critical passive component matching conditions and double gain amplifier circuit. A number of simulations based on PSPICE program are achieved in order to demonstrate the performance of the proposed filter.