Prommee, Pipat

Preferred name

Prommee, Pipat

Alternative Name

Prommee, P.

Main Affiliation

School of Engineering

pipat.pr@kmitl.ac.th

Now showing 1 - 10 of 96

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A Four-Scroll Chaotic Generator based on Two Nonlinear Functions
(2022-01-01)
Karawanich, Khunanon
;
Kumngern, Montree
;
Prommee, Pipat
This paper presents a new three dimensions four-scroll chaotic generator with two unique nonlinear functions. The modified jerk model is utilized with the traditional signum and modified rectangular functions. The proposed system can generate two-scroll and four-scroll attractors by adjusting only one coefficient (k). The fundamental dynamical behaviors of the system are investigated by the bifurcation, Lyapunov spectrum, and Kaplan-Yorke dimension. The one chaotic system can generate double-scroll and complex four-scroll chaotic attractors with variations of a single parameter and without multipliers that are highlighted in this paper. MATLAB carries out the simulation results, and the results confirmed that this is a new three dimensions chaotic jerk model which deserves further detailed investigation.
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Single low-supply and low-distortion CMOS Analog Multiplier
(2005-12-01)
Prommee, Pipat
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Somdunyakanok, Montri
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Angkaew, Krit
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Jodtang, Arkhom
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Dejhan, Kobchai
A single low-supply CMOS Analog Multiplier based upon ohmic region of MOS transistors is presented. This paper describes a method to force the drain-source voltage (V<inf>DS</inf>) of MOS transistors to operate in ohmic region. The achieved circuit can be used a single low-power supply. The complete circuit contains 20 transistors and 8 current sources using a low-power supply +1.5 volts. This circuit has high performance with very high-linearity and low-distortion. The achieved input dynamic range operation is ±400mV, the linearity error is smaller than 0.1% and total harmonic distortion is smaller than 0.25% for input range 800mVp-p. © 2005 IEEE.
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High-order bp filter using biquad log-domain method
(2018-07-02)
Wongprommoon, Natapong
;
Manositthichai, Narongsak
;
Prommee, Pipat
High-order band-pass ladder filter based on Log-domain biquad functions is presented in this paper. High-order ladder filter is designed from RLC ladder filter prototype based on two types of biquad log-domain filters. Log-domain lossy and lossless integrator concepts are used to realize biquad log-domain filter in each type. Log-domain lossy integrator is easily realized by using 7 transistors and 1 grounded capacitor and log-domain lossless integrator is also easily realized by using log-domain lossy integrator by adding feedback to the input which consists of 8 transistors and 1 grounded capacitor. By adjusting bias current the frequency responses the filter can be obtain between 100 kHz and 100 MHz. This filter operates in transistor level which is suitable for operating in high frequency operation. A commercial array BJT technology is used in PSpice simulation.
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Integrable CMOS-Based Current-Mode Sinusoidal Frequency and Peak Detector
(2017-12-01)
Prommee, Pipat
This research proposes the integrable CMOS current-mode instantaneous frequency and peak detector (FPD) based on the trigonometric relationships and mathematic algorithm without the divider function and low-pass filter. The proposed FPD structure is straightforward, consisting of two differentiators, two multipliers and one square-rooter. The input of FPD is operable in the 20–100 kHz frequency and 20–100 μ A amplitude under ± 1.5 V power supplies. In the research, the FPD was simulated using the current-mode CMOS technology and a prototype detector subsequently materialized using the commercially available components. In addition, the FPD was experimentally utilized as the FM and AM demodulators with very satisfactory demodulation outcomes. The simulation and experimental results were agreeable and also consistent with the trigonometric relationships and algorithmic scheme. More importantly, the integrable FPD could achieve the high-accuracy current output and fast response.
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High-complex chaotic system based on new nonlinear function and OTA-based circuit realization
(2022-09-01)
Karawanich, Khunanon
;
Prommee, Pipat
This research proposes a chaotic system using a new modified rectangular nonlinear function based on the principle of the third-order jerk concept. The dynamic behaviors can be realized by manipulating only one parameter from periodic, non-periodic, single-scroll, and double-scroll attractors. The proposed chaotic system can achieve relatively high-complexity chaotic behavior, as evident in the comparatively high Kaplan-Yorke dimension (D<inf>KY</inf> = 2.43) with the existing jerk systems. The performances of the proposed chaotic system are also computed and simulated through the MATLAB numerical analysis, including scenarios of bifurcations branches, Lyapunov exponents, route to chaos, phase portraits, 0–1 test charts, and Poincaré map. The proposed system analyzes the coexistence of asymmetric or symmetric attractors confirmed with basins of attraction to highlight the presence of multiple attractors, which influence initial conditions. In addition, the system's offset boosting and amplitude control are included. Furthermore, a double-scroll attractor and a four-scroll attractor can also be achieved by placing nonlinear functions at different positions in the third-order system., The circuits of the proposed chaotic systems can be conveniently realized using commercially available operational transconductance amplifiers (OTAs) and capacitors. The performances of the circuit are also proven through the experimental results compared with the numerical results. The experimental results exhibit the ease of construction based on the new nonlinear function and are suitable for applying in the data encryptions.
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Current-mode active-only universal filter
(2006-12-01)
Prommee, Pipat
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Kumngern, Montree
;
Dejhan, Kobchai
A universal current-mode active-only filter using the biquadratic transfer function is proposed. The proposed circuit is realized by minimized active-only components count without external passive elements. The different kinds of filter function as low pass, highpass, bandpass and band-reject response can be obtained without changing circuit topology. The proposed circuit is realized by using MOS transistors, OTAs, and OPAMPs. The parameters ω<inf>P</inf> can be electronically tuned through adjusting the transconductance gains of the OTA and Q<inf>P</inf> can be tuned by changing of their components without effect to ω<inf>P</inf> . The simulation results are given by PSpice. ©2006 IEEE.
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Voltage-Mode Elliptic Band-Pass Filter Based on Multiple-Input Transconductor
(2021-01-01)
Prommee, Pipat
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Karawanich, Khunanon
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Khateb, Fabian
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Kulej, Tomasz
This paper presents a new voltage-mode elliptic band-pass filter based on a multiple-input transconductor (MI-OTA). The MI-OTA's structure employs the multiple-input MOS transistor technique that simply enables to increase the number of OTA's inputs without increasing the number of current branches or the differential pairs. The MI-OTA features high linearity over a wide input range with a compact and simple CMOS structure. From the advantage of multiple inputs, it enables to construct the arbitrarily summing and subtracting under the proposed voltage-mode filter design procedure. The filter is designed and simulated in Cadence environment using 0.18 μm TSMC CMOS technology. The filter offers 72.9 dB dynamic range for 2 % total harmonic distortion (THD) for sine input signal of 0.5 Vpp @ 1kHz with voltage supply ± 0.9V. The simulation results of the filter are in agreement with the RLC prototype. The experimental results using commercially available IC are also included to confirm the proposed filter that are in good agreement with the simulation results.
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Integrable QPSK Modulator Using CMOS Technology
(2018-08-20)
Wongprommoon, Natapong
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Manositthichai, Narongsak
;
Prommee, Pipat
This paper presents a design of voltage-mode QPSK modulator circuit based on CMOS analog signal processing subsystems. The circuit consists of dual-output all-pass filter, analog switches and summing operator. All-pass filter is used as a phase-shifter which provides ± 90 degrees phase shifted at considered frequency. Trigonometric relationship identities are used for obtaining the completed 4-quadrant phase shifted signals. CMOS analog switches are constructed with the summing junction for obtaining the QPSK modulation signal outputs by arithmetic algorithm. All-pass filter and summing junction are realized by using CMOS-based differential voltage buffer (DVB) with a few passive elements. The results are verified by PSpice using ± 1.5V power supplies which are in agreement with the theory expectations.
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Low-complexity Chebyshev High-pass Filter based on OTA-C
(2020-07-01)
Wongprommoon, Natapong
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Tiamsuphat, Apinat
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Prommee, Pipat
This work presents a new Chebyshev ladder high-pass filter based on operational transconductance amplifier (OTA) based differentiators. Lossy and Lossless differentiators based on the OTA-C technique are deployed as the main sub-circuits. The Chebyshev ladder high-pass filter is transformed from a low-pass RLC prototype by using the network transformation method. The signal flow graph (SFG) and third-order RLC prototype are used to synthesis the active high-pass filter. The final SFG functions can be directly replaced by OTA-C current-mode differentiators. Due to the proposed structure of the high-pass filter contains only 6 OTA(s) and 3 grounded capacitors that resulting in the low-complexity and low components count. The frequency responses of the proposed filter can be electronically tuned between 200kHz and 8MHz by varying the bias currents (IB) from 3 μ A to 300 μ A. The proposed filter response good agreement with the response of the RLC prototype. PSpice simulation results are carried out to verify the filter performances.
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CMOS-based high-order LP and BP filters using biquad functions
(2018-07-01)
Prommee, Pipat
;
Saising, Ekkapong
This study proposes the complementary metal-oxide-semiconductor (CMOS)-based current-mode high-order active low-pass (LP) and band-pass (BP) filters using biquad functions. The passive RLC Chebyshev ladder filters were used as the prototype, and the mesh- and nodal-analysis methods to derive the biquad functions. The CMOS-based transistor-level biquad circuits were subsequently realised from the biquad functions. The high-order active LP and BP ladder filters were then synthesised from an amalgamation of the biquad circuits. Simulations were carried out to verify the performance and functionality of the LP and BP ladder filters. The results revealed that the proposed ladder filters were operable in the highfrequency range and electronically tunable, given a low-voltage supply of 1 V for the entire circuit. The proposed filters could also achieve the LP frequency response of 300 kHz-30 MHz and BP centre frequency of 200 kHz-20 MHz by means of the bias current (I<inf>B</inf>) manipulation from 1 to 100 μA. Moreover, the multi-tone simulations were undertaken to assess the filtering performance of the proposed filters and the results are agreeable with the design specifications.

Prommee, Pipat

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