New sinusoidal oscillator configurations using operational transresistance amplifier

Komanapalli, Gurumurthy; Pandey, Rajeshwari; Pandey, Neeta

doi:10.1002/cta.2619

Cited by 15 publications

(5 citation statements)

References 44 publications

(94 reference statements)

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“…The Monte Carlo-MC analysis offers a unique tool to study and analyze the robustness, as well as the uncertainty of the proposed realizations of the MMCs for transistor mismatch. 22 The MC simulation is performed 200 times, with 5% Gauss deviation of gate oxide thickness (t ox ) and relevant transistors width and length (of all the MOS transistors) and 10% Gauss deviation of V TH0 (threshold voltage) are achieved as in Figure 11A-a histogram is given to show the distribution of the maximum gain of the proposed DTBP filter configuration 4 (specified in above text, for f 0 = 918.88 kHz and Q = 5.77). Assuming that the values of all passive elements (R, C) uniformly changed by 5% (Figure 11B), 4 MC analysis is also performed for the DTBP filter.…”

Section: Simulation Resultsmentioning

confidence: 99%

Mutually coupled circuits based on modified voltage differencing transconductance amplifier with tuneable characteristics

Petrovič

2022

Circuit Theory & Apps

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The paper presents a new mutually coupled circuit (MCC) based on a modified voltage differencing transconductance amplifier (MVDTA), designed using the modified Gorski-Popiel technique. The proposed synthetic transformer (ST) circuit uses two MVDTAs as active elements, and all passive elements are grounded-two capacitors and two resistors. Thanks to the newly established coupling method-connections, it is provided with independent electronic control of primary and secondary self-inductance, as well as mutual inductance, via bias voltages of MVDTAs. In addition, it is very easy to provide the conditions by which symmetrical couplings are achieved. Monte Carlo analysis is

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Section: Simulation Resultsmentioning

confidence: 99%

Mutually coupled circuits based on modified voltage differencing transconductance amplifier with tuneable characteristics

Petrovič

2022

Circuit Theory & Apps

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“…IB, or the bias current, is used to adjust the transconductance gain of the VDDDA electronically. Although the proposed circuit requires a foating capacitor, the metal-oxide-metal (MOM), double poly (poly1-poly2), or metal-insulator-metal (MIM) capacitor processes can be used to fabricate the foating capacitor [58]. Based on equation ( 1), a circuit analysis can be performed to determine the grounded capacitance multiplier's input impedance (the ratio of v in to i in ), which is defned as…”

Section: Proposed Grounded Capacitance Multipliermentioning

confidence: 99%

Electronically Tunable Grounded and Floating Capacitance Multipliers Using a Single Active Element

Seechaiya,

Jaikla,

Chaichana

et al. 2024

Journal of Electrical and Computer Engineering

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A capacitance multiplier is an active circuit designed specifically to increase the capacitance of a passive capacitor to a significantly higher capacitance level. In this paper, the use of a voltage differencing differential difference amplifier (VDDDA), an electronically controllable active device for designing grounded and floating capacitance multipliers, is proposed. The capacitance multipliers proposed in this study are extremely simple and consist of a VDDDA, a resistor, and a capacitor. The multiplication factor (Kc) can be electronically controlled by adjusting the external bias current (IB). It offers an easy way of controlling it by utilizing a microcontroller for modern analog signal processing systems. The multiplication factor has the potential to be adjusted to a value that is either less than or greater than one, hence widening the variety of uses. The grounded capacitance multiplier can be easily transformed into a floating one by utilizing Zc-VDDDA. PSpice simulation and experimentation with a VDDDA realized from commercially available integrated circuits were used to test the performance of the proposed capacitance multipliers. The multiplication factor is electronically adjustable, ranging in approximation from 0.56 to 13.94. The operating frequency range is approximately three frequency decades. The realization of the lagging and leading phase shifters using the proposed capacitance multiplier is also examined and proven. The results reveal that the lagging and leading phase shifts are electronically tuned via the multiplication factor of the proposed capacitance multipliers.

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“…It consists of only one VDGA and one floating capacitor. Although the floating capacitor is required, it can be implemented using metal-oxide-metal (MOM) double poly (poly1-poly2) or metal-insulator-metal (MIM) capacitor process [24]. Considering the VDGA port relation (1), the input impedance of the proposed capacitance multiplier circuit is…”

Section: Proposed Capacitance Multiplier Circuitmentioning

confidence: 99%

Electronically Adjustable Capacitance Multiplier Circuit with a Single Voltage Differencing Gain Amplifier (VDGA)

Pimpol

2020

Informacije MIDEM

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In this work, we propose a resistorless realization of a simple electronically adjustable capacitance multiplier circuit using a single voltage differencing gain amplifier (VDGA) as an active building block. The circuit utilizes one VDGA and only one capacitor in a simple circuit configuration. The proposed capacitance multiplier circuit can be tuned electronically with the adjustment of the transconductance gains of the VDGA. To emphasis the applicability of the proposed circuit, a second-order RC low-pass filter is constructed as an application example. PSPICE simulations are performed to verify the theory. Elektronsko nastavljiv kapacitivni množilnik z enojnim napetostnim diferencialnim ojačevalnikom (VDGA)Izvleček: V članku je predstavljen enostaven elektronsko nastavljiv kapacitiven množilnik z diferencialnim ojačevalnikom (VDGA) brez uporabe uporov. Vezje vključuje en VDGA in le en kondenzator. Predlagan kapacitivni množilnik je elektronsko nastavljiv s pomočjo spreminjanja transkonduktančnega ojačenja VDGA. Kot primer uporabe je predstavljen nizkopasovni RC filter drugega reda. Teoretični zaključki so preverjeni s PSPICE simulacijami. Ključne

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New sinusoidal oscillator configurations using operational transresistance amplifier

Cited by 15 publications

References 44 publications

Mutually coupled circuits based on modified voltage differencing transconductance amplifier with tuneable characteristics

Mutually coupled circuits based on modified voltage differencing transconductance amplifier with tuneable characteristics

Electronically Tunable Grounded and Floating Capacitance Multipliers Using a Single Active Element

Electronically Adjustable Capacitance Multiplier Circuit with a Single Voltage Differencing Gain Amplifier (VDGA)

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