Current-mode multiphase sinusoidal oscillator using CCCCTAS and grounded elements

Uttaphut, Prungsak; Mekhum, Witthaya; Jaikla, Winai

doi:10.1109/newcas.2011.5981241

Cited by 9 publications

(8 citation statements)

References 15 publications

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“…Similar analysis for ix results: Using ( 15) and ( 16) in (7), the CE of the five-node network is found as: Using (15) and ( 16) in (7), the CE of the five-node network is found as:…”

Section: Ngc As a Five-node Networksupporting

confidence: 65%

A New VCII Application: Sinusoidal Oscillators

Stornelli

Barile

Pantoli

et al. 2021

JLPEA

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The aim of this paper is to prove that, through a canonic approach, sinusoidal oscillators based on second-generation voltage conveyor (VCII) can be implemented. The investigation demonstrates the feasibility of the design results in a pair of new canonic oscillators based on negative type VCII (VCII−). Interestingly, the same analysis shows that no canonic oscillator configuration can be achieved using positive type VCII (VCII+), since a single VCII+ does not present the correct port conditions to implement such a device. From this analysis, it comes about that, for 5-node networks, the two presented oscillator configurations are the only possible ones and make use of two resistors, two capacitors and a single VCII−. Notably, the produced sinusoidal output signal is easily available through the low output impedance Z port of VCII, removing the need for additional voltage buffer for practical use, which is one of the main limitations of the current mode (CM) approach. The presented theory is substantiated by both LTSpice simulations and measurement results using the commercially available AD844 from Analog Devices, the latter being in a close agreement with the theory. Moreover, low values of THD are given for a wide frequency range.

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“…Similar analysis for ix results: Using ( 15) and ( 16) in (7), the CE of the five-node network is found as: Using (15) and ( 16) in (7), the CE of the five-node network is found as:…”

Section: Ngc As a Five-node Networksupporting

confidence: 65%

A New VCII Application: Sinusoidal Oscillators

Stornelli

Barile

Pantoli

et al. 2021

JLPEA

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show abstract

“…Several realizations of current-mode MSOs using different active building blocks are available in the literature. These include realizations using current follower (CF) [8], CCCII [9]- [11], CDTA [12]- [14], CDBA [15], CFOA [16], and CCCCTA [17] and CCCDTA [18], [19]. The CF-based MSO in [8] requires two current followers, one floating resistor, and one floating capacitor for each phase and thus the circuit is not suitable for monolithic integration.…”

Section: Proposed Multiphase Sinusoidal Oscillatormentioning

confidence: 99%

Electronically Controllable Current-Mode Multiphase Sinusoidal Oscillator for Biomedical Tissue Measurement Systems

Siripongdee¹,

Suwanjan²,

Tuntrakool³

et al. 2014

IJBBB

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Abstract-The design of current-mode multiphase sinusoidal oscillator (MSO) for biomedical tissue measurement system is presented. The odd phase system can be realised using current controlled current differencing transconductance amplifier (CCCDTA)-based lossy integrators. The condition of oscillation and frequency of oscillation can be controlled electronically and independently through adjusting the current of the CCCDTA. The high output impedances facilitate easy driving an external load without additional current buffers. The proposed MSO provides odd phase signals that are equally spaced in phase and equal amplitude. The circuit requires one CCCDTA and one grounded capacitor per phase without external resistor and additional current amplifier. The results of PSPICE simulations using BJT CCCDTA are included to verify theory.Index Terms-CCCDTA, multiphase sinusoidal oscillator, integrated circuit.

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“…Thus, the resistorless-based MSOs using the OTA [23] and the current-controlled current conveyor transconductance amplifier (CCCCTA) [24] were proposed; however, capacitors were still required. In [25][26][27], an all-pass filter based on various active devices and a passive element were introduced.…”

Section: Introductionmentioning

confidence: 99%

Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application

Prommee¹,

Manositthichai²,

Khateb³

2017

Turk J Elec Eng & Comp Sci

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Abstract:This research presents an active-only low-pass (LP) filter whose pole frequency and gain are independently tunable by means of bias current manipulation. The realization of the proposed LP filter required one operational amplifier, two operational transconductance amplifiers, and two MOS transistors. The multiphase sinusoidal oscillator (MSO) was subsequently realized by cascading n LP filters ( n = 3) and loop-backing the output of the last LP filter to the input of the first LP filter. Simulations were carried out and the results revealed that the MSO could simultaneously achieve low impedance voltage and high impedance current outputs without the circuit topology alteration. The frequency of oscillation and the condition of oscillation could also be electronically tuned without disturbing each other.Furthermore, the sinusoidal signal of the MSO exhibited relatively low total harmonic distortion of about 0.8% at 2.75MHz. To verify, a prototype of the active-only LP-based MSO ( n = 3) was constructed and experiments were performed.The experimental findings were agreeable with the simulation results.

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Current-mode multiphase sinusoidal oscillator using CCCCTAS and grounded elements

Cited by 9 publications

References 15 publications

A New VCII Application: Sinusoidal Oscillators

A New VCII Application: Sinusoidal Oscillators

Electronically Controllable Current-Mode Multiphase Sinusoidal Oscillator for Biomedical Tissue Measurement Systems

Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application

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