Kumngern, Montree
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Preferred name
Kumngern, Montree
Alternative Name
KUMNGERN, Montree
Kumngern, M.
Main Affiliation
Email
montree.ku@kmitl.ac.th
180 results
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Item type:Publication, Current-tunable current-mode all-pass section using DDCC(2011-11-03) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Fully CMOS programmable voltage adder/subtractor(2011-08-25)This paper presents a new programmable voltage adder/subtractor circuit. The proposed circuit is based on differential difference current conveyors and MOS switches. The adder/subtractor yields advantages over previous adders and subtractors in view of the less active components, low power consumption and its function to be programmable by digital codes which is suitable for integrated circuit implementation. Simulation results using PSPICE program are also obtained. From simulation results, it finds that the operation range of the proposed adder/subtractor is 1.5V with a supply voltage of 2V and the operation frequency is up to 100MHz. © 2011 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Flipped Classroom Based on Active Learning in Digital Communications Course for Science in Technical Education on New Normal(2023-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Single MCCCCTA-based mixed-mode third-order quadrature oscillator(2012-11-22); Chanwutitum, JirasakThis paper presents a new current-controlled mixed-mode third-order quadrature oscillator. The proposed structure employs one modified current-controlled current conveyor transconductance amplifier (MCCCCTA) and three grounded capacitors that can generate two quadrature voltage outputs and four quadrature current outputs. The use of grounded capacitor makes the proposed structure more suitable for integrated circuit implementation. The condition of oscillation and the frequency of oscillation can be controlled orthogonally and electronically by adjusting the biasing currents of the MCCCCTA. Simulation results verifying the theoretical analysis are also included. © 2012 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Tunable quadrature sinusoidal oscillator using single-ended OTAs(2012-10-17); Junnapiya, SomyotThis paper presents a new electronically tunable voltage-mode quadrature sinusoidal oscillator employing four single-ended operational transconductance amplifiers (OTAs) and two grounded capacitors. In general, the single-ended OTA configuration is simpler than the multiple-output OTA counterpart and the requirement of grounded capacitors is preferable for an integrated circuit fabrication process. Therefore, the proposed circuit provides a simple circuitry by using only single-ended OTA and highly suitable for integrated circuit (IC) implementation by using grounded capacitors. The condition of oscillation and the frequency of oscillation of the circuit can be set orthogonally. The circuit also offers an electronic control of the frequency of oscillation through adjusting the bias currents of OTAs. The theoretical results are verified by PSPICE simulators. From simulation results, it can be expressed that the proposed circuit agrees well with theory. © 2012 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, DDTA and DDCCTA: New active elements for analog signal processing(2012-12-01)This paper presents new active elements, namely the differential difference transconductance amplifier (DDTA) and differential difference current conveyor transconductance amplifier (DDCCTA). Unlike the previously reported papers, the active elements in this paper can be implemented by using either commercially available integrated circuits (ICs) (i.e. AD 844, LM 13600) or IC techniques (i.e. CMOS or bipolar technologies). By using these elements-based circuits, achieved circuits can be implemented both as discrete and IC forms. The workability of the proposed circuits is confirmed by PSPICE simulators. © 2012 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electronically tunable versatile voltage-mode biquadratic filter with three-input six-output using OTAs and grounded capacitors(2012-07-16)This paper presents a new electronically tunable versatile voltage-mode biquadratic filter with three inputs and six outputs using operational transconductance amplifiers and grounded capacitors. The proposed circuit provides simultaneously realize voltage-mode low-pass, band-pass, high-pass, band-stop and allpass filter responses. The natural frequency and the quality factor can be set orthogonally. Also the natural frequency can be electronically controlled. No component-matching conditions and no inverting-type input signals are required for realizing all the filter responses. The active and passive sensitivities are low. PSPICE simulation results are given to confirm the presented theory. © 2012 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electronically tunable current-mode all-pass filter-based high-Q bandpass filter using minimum elements(2009-12-01)A new electronically tunable current-mode high-Q bandpass filter employing second-generation current controlled conveyor (CCCII)-based first-order all-pass filters is presented. The proposed filter uses only three CCCIIs, one current-controlled resistor and two grounded capacitors. The center frequency (ω<inf>c</inf>) and the quality factor (Q) can be independently adjusted through the bias current of the CCCII and current-controlled resistor. The Q-value is also temperature independent. The proposed configuration is very attractive for monolithic form. The performances of the proposed circuit are simulated with PSPICE to confirm the presented theory. ©2009 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Voltage-mode first-order allpass filter using single-ended OTAs and grounded capacitor(2012-07-16); Chanwutitum, JirasakThis paper presents a new electronically tunable voltage-mode first-order allpass filter using only three single-ended operational transconductance amplifiers (OTAs) and one grounded capacitor, which is highly suitable for integrated circuit implementation. The pole frequency of the filter can be tuned electronically by adjusting the transconductance value of the OTA. No component-matching conditions are also required for realizing allpass response. The characteristics of the proposed circuit are simulated using PSPICE simulations to confirm the theory. © 2012 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Current-mode multiphase sinusoidal oscillator using current-controlled current differencing transconductance amplifiers(2010-12-01)This paper presents a new current-mode multiphase sinusoidal oscillator employing current-controlled current differencing transconductance amplifiers (CCCDTAs). The proposed oscillator circuit, which employs one CCCDTA, one grounded capacitor and one grounded resistor for each phase, can generate arbitrary n output current equal-amplitude signals that are equally spaced in phase (n being even or odd), all at high output impedance terminals. The frequency of oscillation and the condition of oscillation can be controlled electronically and independently through adjusting the bias current of the CCCDTA. The proposed oscillator is highly suitable for integrated circuit implementation. The theoretical results were verified by PSPICE simulation. © 2010 IEEE.