Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors

Chien, Heng-Chieh

doi:10.1016/j.mejo.2012.08.005

Cited by 37 publications

(20 citation statements)

References 27 publications

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“…Even though the circuit in [35] offers the feature of grounded capacitor, it is suffering from having more number of active elements and passive components. Whereas the standard circuits in [16,35,36] are tested experimentally with hardware implementation, wherein only [35,36] have the grounded capacitor feature and all other three facing predicaments with excessive active and externally attached passive components. Even the topologies in [17,22,28] have the single active element.…”

Section: Evaluation Of the Proposed Square Wave Generatormentioning

confidence: 99%

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

Vijay

Srinivasulu

2017

Arab J Sci Eng

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By using two resistors and a single capacitor with second-generation differential current conveyor as an active element, a new square wave generator is proposed and implemented. The frequency of operation of the introduced model is varied with respect to the variation of remaining passive components. Maximum reduction in noise effects caused by parasitics generated during integrated circuit fabrication is achieved with the scheme of grounded capacitor. The mathematical model of the selected circuit is verified in both simulation and experimental mode and found having matched in all three aspects. The elevated advantages and merits of the given topology are compared and tabulated contrary to the existing standard models. Using Cadence virtuoso with gpdk 180 nm libraries, the circuit is verified with a supply rail voltage of ±2.5 V. Later, prototype is also tested with commercially available current feedback operational amplifiers of AD844AN.

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Section: Evaluation Of the Proposed Square Wave Generatormentioning

confidence: 99%

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

Vijay

Srinivasulu

2017

Arab J Sci Eng

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“…Current-mode active elements are found to be useful in various applications such as square wave generation, triangular wave generation, sawtooth wave generation, pulse width modulation generation, clock generation, and sinusoidal wave generation in the area of measurement and communication systems [24][25][26][27][28][29][30][31][32][33][34][35][36][37]. The circuits of triangular wave and square wave generators implemented by using different types of active elements have proved to be very attractive and necessary blocks in the area of signal processing.…”

Section: Proposed Triangular/square Wave Generatormentioning

confidence: 99%

“…The circuits of triangular wave and square wave generators implemented by using different types of active elements have proved to be very attractive and necessary blocks in the area of signal processing. In the literature, various circuits of triangular wave and square wave generator are available [24][25][26][27][28][29][30][31][32][33].…”

Section: Proposed Triangular/square Wave Generatormentioning

confidence: 99%

A fully electronically controllable Schmitt trigger and duty cycle‐modulated waveform generator

Kumar

Chaturvedi

Maheshwari

2017

Circuit Theory & Apps

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The paper introduces a new Schmitt trigger consisting of only one multiple-output current inverting differential input transconductance amplifier with no passive element. The proposed circuit is simple and usable up to 100 MHz with the advantage of electronically controlled threshold levels and amplitude of the output. The circuit is also little sensitive to temperature and benefits from low power dissipation (0.5 mW). The amplitude of the output current is tunable electronically from 5 nA to 500 μA, which is a wide tunable range. The effects of transistors mismatch on proposed Schmitt trigger have also been explored. The utility of the proposed circuit is further justified through its application as a triangular/square wave generator, with a maximum frequency of 75 MHz. Duty cycle modulation through electronic means is also shown for the generator circuit, where duty cycle results for 80, 20, and 95% have been included, by varying external control current. The cadence VIRTUOSO simulation results by using generic process design kit 90-nm technology are shown to confirm the proposed theory. The proposed circuits are also verified through experimental results by using commercial integrated circuits: AD844 and LM13700. All the simulated and experimental results promise potential applications of the proposed circuits in instrumentation and communication systems. Figure 9. Monte Carlo sampling results showing the transient responses of V in , V z , and I out at 5 MHz for 150 runs when instance of mismatch is defined for (a) transistors M 5 and M 6 , (b) transistors M 20 and M 21 , and (c) transistors M 5 , M 6 , M 20 , and M 21 . [Colour figure can be viewed at wileyonlinelibrary.com] 2168 A. KUMAR, B. CHATURVEDI AND S. MAHESHWARI Figure 23. Experimentally observed square and triangular waveforms for (a) 80% duty cycle (b) 20% duty cycle (c) 95% duty cycle. [Colour figure can be viewed at wileyonlinelibrary.com] 2178A. KUMAR, B. CHATURVEDI AND S. MAHESHWARI Dostal T. Simply adjustable triangular and square wave generator employing controlled gain current and differential voltage amplifier. In 23th Conference Radioelektronika 2013; 109-114. 33. Chien HC. A current-/voltage-controlled four-slope operation square-/triangular-wave generator and a dual-mode pulse width modulation signal generator employing current-feedback operational amplifiers. Microelectronics Journal 2014; 45(6):634-647. 34. Chaturvedi B, Maheshwari S. Third-order quadrature oscillator circuit with current and voltage outputs.

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“…Chien [12] proposed a DVCC-based voltage-controlled dual slope operation square/triangular wave generator which is shown in Fig …”

Section: Chien's Square/triangular Wave Generatormentioning

confidence: 99%

Second Generation Miscellaneous Linear/Nonlinear Applications of Various Types of Current Conveyors

2014

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Miscellaneous linear and non-linear applications of varieties of CCs have been elaborated in this chapter. The functional circuits described include instrumentation amplifier, PID controllers, single ended to differential converters, precision rectifiers, astable and monostable multivibrators, square/triangular wave generator and chaos generator, analog multiplier/dividers, squares and square rooters, mutators and memristive and memcapacitive emulators.

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Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors

Cited by 37 publications

References 27 publications

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

A Novel Square Wave Generator Using Second-Generation Differential Current Conveyor

A fully electronically controllable Schmitt trigger and duty cycle‐modulated waveform generator

Second Generation Miscellaneous Linear/Nonlinear Applications of Various Types of Current Conveyors

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